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Industry Standard of the People's Republic of China
JB/T4700~4707—2000
Flanges for pressure vessels
2000-04-24 Issued
National Bureau of Machinery Industry
National Bureau of Petroleum and Chemical Industry
2000-09-30 Implementation
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Standard Number: GB/T 33575-2017 Standard Status: Current National Standard
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This standard specifies the most basic environmental requirements for electronic box seals. This standard applies to radio frequency devices defined by ISO 18185, ISO 10374, and ISO17363, because the implementation of these international standards will face the same environmental characteristics. However, in addition to environmental characteristics, these international standards also have their own specific requirements. English name:
Freight containers-Electronic seals-Environmental characteristics
②Winning category: Comprehensive>>Marking, packaging, transportation, storage>>A85 containers, pallets, shelves③ICS classification: Packaging and transportation of goods>>Freight transportation>>55.180.10 General containerIssuing department: General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China Standardization Administration of ChinaIssuing date: 2017-05-12
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Location: Industrial Standards Network>>>>GB/T33575-2017 Environmental characteristics of container electronic box seals
Standard number: GB/T 33575-2017 Standard status: current national standard
Standard price: 29.0 yuan
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Coordination system
This standard specifies the most basic environmental requirements for electronic box seals. This standard applies to radio frequency devices defined by ISO 18185, ISO 10374, and ISO17363, because the implementation of these international standards will face the same environmental characteristics. However, in addition to environmental characteristics, these international standards also have their own specific requirements. English name:
Freight containers-Electronic sealsEnvironmentalcharacteristics
②Winning category: Comprehensive >> Marking, packaging, transportation, storage >> A85 containers, pallets, shelves ③ICS classification: Packaging and transportation of goods >> Freight transportation >> 55.180.10 General containers Issuing department: General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China Standardization Administration of China Issuing date: 2017-05-12
3.1 Code
The standards and codes for metal sheets shall be as specified in Table 1. Table 1
Metal sheets
Galvanized steel sheet
Galvanized steel sheet
3.2 Marking
3.3 Marking example
Material standard
GB/T2520
GB/T2518
GB/T710
GB/T2040
Metal sheets
1060 (Aluminum 12)
OCr18Ni9
Standard number||t t||Material standard
GB/T3880
GB/T3280
GB/T3280
Nominal pressure, MPa
Nominal diameter, mm
Metal sheet code
Nominal diameter 1000mm, nominal pressure 2.50MPa, metal sheet is 0Cr18Ni9 package gasket: gasket G-1000-2.50
JB/T47062000
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GB/T33575-2017 Environmental characteristics of container electronic box seals
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Standard No.: GB/T 33575-2017 Standard status: Current standard Price: 29.0 yuan
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This standard specifies the most basic environmental requirements for electronic box seals. This standard applies to ISO 18185, ISO 10374, ISO 17363, because the implementation of these international standards will face the same environmental characteristics. However, in addition to environmental characteristics, these international standards also have their own specific requirements for radio frequency devices. EEEEEE
English name:
Freight containers-Electronic sealsEnvironmental characteristics
③Successful bid classification: Comprehensive>>Marking, packaging, transportation, storage>>A85 container, pallet, shelf③ICS classification: Packaging and transportation of goods>>Freight transportation>>55.180.10 General containerIssuing department: General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of ChinaIssuing date: 2017-05-12
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Location:Industrial Standards Network>>GB/T33575-2017 Environmental Characteristics of Container Electronic Box Seals
Standard Number: GB/T 33575-2017 Standard Status: Current National Standard
Standard Price: 29.0 Yuan
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Coordination System
This standard specifies the most basic environmental requirements for electronic box seals. This standard applies to radio frequency devices defined by ISO 18185, ISO 10374, and ISO17363, because the implementation of these international standards will face the same environmental characteristics. However, in addition to environmental characteristics, these international standards also have their own specific requirements. English name:
Freight containers-Electronic sealsEnvironmentalcharacteristics
③Successful bid classification: Comprehensive>>Marking, packaging, transportation, storage>>A85 container, pallet, shelf③ICS classification: Packaging and transportation of goods>>Freight transportation>>55.180.10 General containerIssuing department: General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of ChinaIssuing date: 2017-05-12
5.4 The metal surface is not allowed to have defects such as scars and rust spots that affect the sealing performance. Check the standard
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5.5When making gaskets, try to use a whole metal plate. If splicing is allowed due to large diameter and insufficient plate width, the number of splicing is generally 2~3. The butt cut should be cut into 45° and argon arc welding or gas welding should be used. The butt weld must be ground flush with the parent material. The welded joint shall be subjected to cold bending test according to the provisions of GB/T232. The bending radius is 1.5mm and the bending angle is 180°. No cracks shall appear at the weld of the cold-bent specimen and the adjacent parent material: no radial through-marks shall be present on the surface of the metal sheet. 5.6 The thickness of the filler material shall be uniform over the entire section. Industrial Standards Network
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Location: Industrial Standards Network>>>>GB/T34394-2017E
National Standard
Maximum Working Load of Flat Pallet
Standard Number: GB/T 34394-2017 Standard Status: Current Standard Price: 29.0 Yuan
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This standard specifies the method for determining the maximum working load of new flat pallets under known effective load conditions in different operating environments.
This standard is applicable to the determination of the maximum working load of flat pallets for material handling. English name: Maximum working load for flat pallets③Winning category: Comprehensive>>Marking, packaging, transportation, storage>>A85Containers, pallets, shelves?ICS classification: Packaging and transportation of goods>>Freight transportation>>55.180.20General pallets?Standard adoption: ISO 8611-3:2011 MODIssuing department: General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of ChinaIssuing date: 2017-10-14
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JB/T4700~4707—2000 Revision Notes
According to the 1997~1998 pressure vessel standard formulation and revision plan of the National Pressure Vessel Standardization Technical Committee, the compilation team revised the standard based on the feedback and opinions collected from all aspects during the six years since the implementation of the standard. This standard focuses on the revision of the following aspects: 1. The relationship between this standard and the flange design method in the steel pressure vessel standard GB150 is clarified. The revised standard points out that this standard should be used first for pressure vessel flanges. The flanges selected according to this standard can be exempted from the relevant calculations of GB150. When this standard cannot meet the design selection requirements, GB150 can be used for design. 2. All referenced standards are updated to the latest version. 3. The long-neck butt welding flange standard has been further improved. a) The applicable temperature range of the standard is expanded to -70°C. Two types of domestic low-temperature forging steels are added to the standard, among which: 16MnD can meet the use requirements of -40°C; 09MnNiD can meet the use requirements of -70°C.
Additional adjustments have been made to Table 2 (flange, gasket, stud, nut material matching table) and Table 7 (maximum allowable working pressure of long-neck flanges) in the standard.
b) Adapt to the use requirements of 3mm corrosion allowance of flange materials. The material corrosion allowance has a direct impact on the effective thickness of the small end of the flange cone neck, and the maximum stress (axial stress) of the flange usually occurs there, so the corrosion allowance has a greater impact on the flange strength. For this reason, it is often necessary to increase the structural dimensions of the flange, and generally the thickness of the flange ring can be increased. When the required thickness increase is large, the thickness of the small end of the cone neck (i.e., the thickness of the straight edge section of the flange) should be adjusted. According to the above principles, the structural dimensions of the long-neck flange standard (flange ring thickness or cone neck small end thickness) are readjusted through calculation, so that the long-neck flange standard can adapt to the 3mm corrosion allowance requirement, but the structural dimensions change constantly. For type B flanges, considering the 3mm flange corrosion allowance will increase the flange ring thickness or increase the short section thickness. In order to avoid unnecessary waste, the corrosion allowance adapted by this standard is still 2mm. When the 3mm allowance needs to be considered, the method of increasing the short section thickness can be adopted.
c) Adapt to the need to connect with thinner cylindrical shells. The standard gives the minimum butt cylinder thickness. When it is necessary to connect with a thinner cylinder with a smaller thickness, the length of the straight side section that needs to be extended by the long neck flange to meet the strength requirements is calculated. For the convenience of application, the standard is handled in the form of increasing the total height of the flange, and Table 3 (correction table of the height H of the long neck butt welding flange) is added for this purpose. d) The inspection requirements for the welding joints between the long neck flange and the cylinder are improved. The stress level of the connection weld between the long neck flange and the cylinder is very high, which is the weak link of the flange strength. In the calculation, the weld coefficient is taken as 1.0. For this reason, the requirement of 100% inspection is proposed for it, and it is controlled at the corresponding level. At the same time, the thinning requirements of the straight side section of the flange are modified.
4 Stud material impact energy requirements.
The impact energy index required for the stud material is changed to Akv5. It is allowed to modify the selection of some dimensions of the standard flange. In order to facilitate the application of standard flanges, it is allowed to select standard flanges based on the modification of some dimensions, and the marking method is given. 6 The structural dimensions of each standard gasket and the connection dimensions of each standard flange are not changed in the new standard. The dimensions of a few flanges have been adjusted.0 yuan
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Coordination system
This standard specifies the most basic environmental requirements for electronic box seals. This standard applies to radio frequency devices defined by ISO 18185, ISO 10374, and ISO17363, because the implementation of these international standards will face the same environmental characteristics. However, in addition to environmental characteristics, these international standards also have their own specific requirements. English name:
Freight containers-Electronic sealsEnvironmentalcharacteristics
③Successful bid classification: Comprehensive>>Marking, packaging, transportation, storage>>A85 container, pallet, shelf③ICS classification: Packaging and transportation of goods>>Freight transportation>>55.180.10 General containerIssuing department: General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of ChinaIssuing date: 2017-05-12
5.4 The metal surface is not allowed to have defects such as scars and rust spots that affect the sealing performance. Check the standard
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5.5When making gaskets, try to use a whole metal plate. If splicing is allowed due to large diameter and insufficient plate width, the number of splicing is generally 2~3. The butt cut should be cut into 45° and argon arc welding or gas welding should be used. The butt weld must be polished flush with the parent material. The welded joint shall be subjected to cold bending test according to the provisions of GB/T232. The bending radius is 1.5mm and the bending angle is 180°. No cracks shall appear at the weld of the cold-bent specimen and the adjacent parent material: no radial through-marks shall be present on the surface of the metal sheet. 5.6 The thickness of the filler material shall be uniform over the entire section. Industrial Standards Network
csres.com Inquiry
Location: Industrial Standards Network>>>>GB/T34394-2017E
National Standard
Maximum Working Load of Flat Pallet
Standard Number: GB/T 34394-2017 Standard Status: Current Standard Price: 29.0 Yuan
Customer Rating: ★☆☆☆》
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Standard Introduction
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This standard specifies the method for determining the maximum working load of new flat pallets under known effective load conditions in different operating environments.
This standard is applicable to the determination of the maximum working load of flat pallets for material handling. English name: Maximum working load for flat pallets③Winning category: Comprehensive>>Marking, packaging, transportation, storage>>A85Containers, pallets, shelves?ICS classification: Packaging and transportation of goods>>Freight transportation>>55.180.20General pallets?Standard adoption: ISO 8611-3:2011 MODIssuing department: General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of ChinaIssuing date: 2017-10-14
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Container electronic box sealing ring
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JB/T4700~4707—2000 Revision Notes
In accordance with the 1997~1998 pressure vessel standard formulation and revision plan of the National Pressure Vessel Standardization Technical Committee, the compilation team revised the standard based on the feedback and opinions collected from all aspects during the six years since the implementation of the standard. This standard focuses on the revision of the following aspects: 1. The relationship between this standard and the flange design method in the steel pressure vessel standard GB150 is clarified. The revised standard points out that this standard should be used first for pressure vessel flanges. The flanges selected according to this standard can be exempted from the relevant calculations of GB150. When this standard cannot meet the design selection requirements, GB150 can be used for design. 2. All referenced standards are updated to the latest version. 3. The long-neck butt welding flange standard has been further improved. a) The applicable temperature range of the standard is expanded to -70°C. Two types of domestic low-temperature forging steels are added to the standard, among which: 16MnD can meet the use requirements of -40°C; 09MnNiD can meet the use requirements of -70°C.
Additional adjustments have been made to Table 2 (flange, gasket, stud, nut material matching table) and Table 7 (maximum allowable working pressure of long-neck flanges) in the standard.
b) Adapt to the use requirements of 3mm corrosion allowance of flange materials. The material corrosion allowance has a direct impact on the effective thickness of the small end of the flange cone neck, and the maximum stress (axial stress) of the flange usually occurs there, so the corrosion allowance has a greater impact on the flange strength. For this reason, it is often necessary to increase the structural dimensions of the flange, and generally the thickness of the flange ring can be increased. When the required thickness increase is large, it is advisable to adjust the thickness of the small end of the cone neck (i.e., the thickness of the straight edge section of the flange). According to the above principles, the structural dimensions of the long-neck flange standard (flange ring thickness or cone neck small end thickness) are readjusted through calculation, so that the long-neck flange standard can adapt to the 3mm corrosion allowance requirement, but the structural dimensions change constantly. For type B flanges, considering the 3mm flange corrosion allowance will increase the thickness of the flange ring or increase the thickness of the short section. In order to avoid unnecessary waste, the corrosion allowance adapted by this standard is still 2mm. When the 3mm allowance needs to be considered, the method of increasing the thickness of the short section can be adopted.
c) Adapt to the need to connect with thinner cylindrical shells. The standard gives the minimum thickness of the butt cylinder. When it is necessary to connect with a thinner cylinder with a smaller thickness, the length of the straight side section that needs to be lengthened by the long neck flange to meet the strength requirements is calculated. For the convenience of application, the standard is handled in the form of increasing the total height of the flange, and Table 3 (correction table of the height H of the long neck butt welding flange) is added for this purpose. d) The inspection requirements for the welding joints between the long neck flange and the cylinder are improved. The stress level of the connection weld between the long neck flange and the cylinder is very high, which is the weak link of the flange strength. In the calculation, the weld coefficient is taken as 1.0. For this reason, the requirement of 100% inspection is proposed for it, and it is controlled at the corresponding level. At the same time, the thinning requirements of the straight side section of the flange are modified.
4 Impact energy requirements for stud materials.
The impact energy index required for stud materials is changed to Akv5. It is allowed to modify the selection of some dimensions of standard flanges. In order to facilitate the application of standard flanges, it is allowed to select standard flanges based on the modification of some dimensions, and the marking method is given. 6 The structural dimensions of each standard gasket and the connection dimensions of each standard flange are not changed in the new standard. The dimensions of a few flanges have been adjusted.0 yuan
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Introduction to the standard
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Related comments
Coordination system
This standard specifies the most basic environmental requirements for electronic box seals. This standard applies to radio frequency devices defined by ISO 18185, ISO 10374, and ISO17363, because the implementation of these international standards will face the same environmental characteristics. However, in addition to environmental characteristics, these international standards also have their own specific requirements. English name:
Freight containers-Electronic sealsEnvironmentalcharacteristics
③Successful bid classification: Comprehensive>>Marking, packaging, transportation, storage>>A85 container, pallet, shelf③ICS classification: Packaging and transportation of goods>>Freight transportation>>55.180.10 General containerIssuing department: General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of ChinaIssuing date: 2017-05-12
5.4 The metal surface is not allowed to have defects such as scars and rust spots that affect the sealing performance. Check the standard
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5.5When making gaskets, try to use a whole metal plate. If splicing is allowed due to large diameter and insufficient plate width, the number of splicing is generally 2~3. The butt cut should be cut into 45° and argon arc welding or gas welding should be used. The butt weld must be polished flush with the parent material. The welded joint shall be subjected to cold bending test according to the provisions of GB/T232. The bending radius is 1.5mm and the bending angle is 180°. No cracks shall appear at the weld of the cold-bent specimen and the adjacent parent material: no radial through-marks shall be present on the surface of the metal sheet. 5.6 The thickness of the filler material shall be uniform over the entire section. Industrial Standards Network
csres.com Inquiry
Location: Industrial Standards Network>>>>GB/T34394-2017E
National Standard
Maximum Working Load of Flat Pallet
Standard Number: GB/T 34394-2017 Standard Status: Current Standard Price: 29.0 Yuan
Customer Rating: ★☆☆☆》
Buy Now to enjoy the standard status change reminder service! Buy Now!
Standard Introduction
How to Buy? Ask customer service
Receive Morimoto standards
Related comments
This standard specifies the method for determining the maximum working load of new flat pallets under known effective load conditions in different operating environments.
This standard is applicable to the determination of the maximum working load of flat pallets for material handling. English name: Maximum working load for flat pallets③Winning category: Comprehensive>>Marking, packaging, transportation, storage>>A85Containers, pallets, shelves?ICS classification: Packaging and transportation of goods>>Freight transportation>>55.180.20General pallets?Standard adoption: ISO 8611-3:2011 MODIssuing department: General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of ChinaIssuing date: 2017-10-14
Have questions? Find online customer service
Facetime
WeChat 18976
Reminder: Standard update
Timeliness of purchased standards
Frequently asked questions
Why can't I find my
Delivery scope, delivery time
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Standards you have browsed
Container electronic box sealing ring
Required software download
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Read and print PDF1
Through it, you can view this
Click here
JB/T4700~4707—2000 Revision Notes
In accordance with the 1997~1998 pressure vessel standard formulation and revision plan of the National Pressure Vessel Standardization Technical Committee, the compilation team revised the standard based on the feedback and opinions collected from all aspects during the six years since the implementation of the standard. This standard focuses on the revision of the following aspects: 1. The relationship between this standard and the flange design method in the steel pressure vessel standard GB150 is clarified. The revised standard points out that this standard should be used first for pressure vessel flanges. The flanges selected according to this standard can be exempted from the relevant calculations of GB150. When this standard cannot meet the design selection requirements, GB150 can be used for design. 2. All referenced standards are updated to the latest version. 3. The long-neck butt welding flange standard has been further improved. a) The applicable temperature range of the standard is expanded to -70°C. Two types of domestic low-temperature forging steels are added to the standard, among which: 16MnD can meet the use requirements of -40°C; 09MnNiD can meet the use requirements of -70°C.
Additional adjustments have been made to Table 2 (flange, gasket, stud, nut material matching table) and Table 7 (maximum allowable working pressure of long-neck flanges) in the standard.
b) Adapt to the use requirements of 3mm corrosion allowance of flange materials. The material corrosion allowance has a direct impact on the effective thickness of the small end of the flange cone neck, and the maximum stress (axial stress) of the flange usually occurs there, so the corrosion allowance has a greater impact on the flange strength. For this reason, it is often necessary to increase the structural dimensions of the flange, and generally the thickness of the flange ring can be increased. When the required thickness increase is large, it is advisable to adjust the thickness of the small end of the cone neck (i.e., the thickness of the straight edge section of the flange). According to the above principles, the structural dimensions of the long-neck flange standard (flange ring thickness or cone neck small end thickness) are readjusted through calculation, so that the long-neck flange standard can adapt to the 3mm corrosion allowance requirement, but the structural dimensions change constantly. For type B flanges, considering the 3mm flange corrosion allowance will increase the thickness of the flange ring or increase the thickness of the short section. In order to avoid unnecessary waste, the corrosion allowance adapted by this standard is still 2mm. When the 3mm allowance needs to be considered, the method of increasing the thickness of the short section can be adopted.
c) Adapt to the need to connect with thinner cylindrical shells. The standard gives the minimum thickness of the butt cylinder. When it is necessary to connect with a thinner cylinder with a smaller thickness, the length of the straight edge section that needs to be extended by the long neck flange to meet the strength requirements is calculated. For the convenience of application, the standard is handled in the form of increasing the total height of the flange, and Table 3 (correction table of the height H of the long neck butt welding flange) is added for this purpose. d) The inspection requirements for the welded joints between the long neck flange and the cylinder are improved. The stress level of the connection weld between the long neck flange and the cylinder is very high, which is the weak link of the flange strength. In the calculation, the weld coefficient is taken as 1.0. For this reason, the requirement of 100% inspection is proposed for it, and it is controlled at the corresponding level. At the same time, the thinning requirements of the straight edge section of the flange are modified.
4 Stud material impact energy requirements.
The impact energy index required for the stud material is changed to Akv5. It is allowed to modify the selection of some dimensions of the standard flange. In order to facilitate the application of standard flanges, it is allowed to select standard flanges based on the modification of some dimensions, and the marking method is given. 6 The structural dimensions of each standard gasket and the connection dimensions of each standard flange are not changed in the new standard. The dimensions of a few flanges have been adjusted.10 General Containers Issuing Department: General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China Standardization Administration of China Issuing Date: 2017-05-12
5.4 The metal surface is not allowed to have defects such as scratches and rust spots that affect the sealing performance. Check the standard
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5.5When making gaskets, try to use a whole metal plate. If splicing is allowed due to large diameter and insufficient plate width, the number of splicing is generally 2~3. The butt cut should be cut into 45° and argon arc welding or gas welding should be used. The butt weld must be ground flush with the parent material. The welded joint shall be subjected to cold bending test according to the provisions of GB/T232. The bending radius is 1.5mm and the bending angle is 180°. No cracks shall appear at the weld of the cold-bent specimen and the adjacent parent material: no radial through-marks shall be present on the surface of the metal sheet. 5.6 The thickness of the filler material shall be uniform over the entire section. Industrial Standards Network
csres.com Inquiry
Location: Industrial Standards Network>>>>GB/T34394-2017E
National Standard
Maximum Working Load of Flat Pallet
Standard Number: GB/T 34394-2017 Standard Status: Current Standard Price: 29.0 Yuan
Customer Rating: ★☆☆☆》
Buy Now to enjoy the standard status change reminder service! Buy Now!
Standard Introduction
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Related comments
This standard specifies the method for determining the maximum working load of new flat pallets under known effective load conditions in different operating environments.
This standard is applicable to the determination of the maximum working load of flat pallets for material handling. English name: Maximum working load for flat pallets③Winning category: Comprehensive>>Marking, packaging, transportation, storage>>A85Containers, pallets, shelves?ICS classification: Packaging and transportation of goods>>Freight transportation>>55.180.20General pallets?Standard adoption: ISO 8611-3:2011 MODIssuing department: General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of ChinaIssuing date: 2017-10-14
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Frequently asked questions
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Standards you have browsed
Container electronic box sealing ring
Required software download
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Read and print PDF1
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Click here
JB/T4700~4707—2000 Revision Notes
According to the 1997~1998 pressure vessel standard formulation and revision plan of the National Pressure Vessel Standardization Technical Committee, the compilation team revised the standard based on the feedback and opinions collected from all aspects during the six years since the implementation of the standard. This standard focuses on the revision of the following aspects: 1. The relationship between this standard and the flange design method in the steel pressure vessel standard GB150 is clarified. The revised standard points out that this standard should be used first for pressure vessel flanges. The flanges selected according to this standard can be exempted from the relevant calculations of GB150. When this standard cannot meet the design selection requirements, GB150 can be used for design. 2. All referenced standards are updated to the latest version. 3. The long-neck butt welding flange standard has been further improved. a) The applicable temperature range of the standard is expanded to -70°C. Two types of domestic low-temperature forging steels are added to the standard, among which: 16MnD can meet the use requirements of -40°C; 09MnNiD can meet the use requirements of -70°C.
Additional adjustments have been made to Table 2 (flange, gasket, stud, nut material matching table) and Table 7 (maximum allowable working pressure of long-neck flanges) in the standard.
b) Adapt to the use requirements of 3mm corrosion allowance of flange materials. The material corrosion allowance has a direct impact on the effective thickness of the small end of the flange cone neck, and the maximum stress (axial stress) of the flange usually occurs there, so the corrosion allowance has a greater impact on the flange strength. For this reason, it is often necessary to increase the structural dimensions of the flange, and generally the thickness of the flange ring can be increased. When the required thickness increase is large, the thickness of the small end of the cone neck (i.e., the thickness of the straight edge section of the flange) should be adjusted. According to the above principles, the structural dimensions of the long-neck flange standard (flange ring thickness or cone neck small end thickness) are readjusted through calculation, so that the long-neck flange standard can adapt to the 3mm corrosion allowance requirement, but the structural dimensions change constantly. For type B flanges, considering the 3mm flange corrosion allowance will increase the flange ring thickness or increase the short section thickness. In order to avoid unnecessary waste, the corrosion allowance adapted by this standard is still 2mm. When the 3mm allowance needs to be considered, the method of increasing the short section thickness can be adopted.
c) Adapt to the need to connect with thinner cylindrical shells. The standard gives the minimum butt cylinder thickness. When it is necessary to connect with a thinner cylinder with a smaller thickness, the length of the straight edge section that needs to be extended by the long neck flange to meet the strength requirements is calculated. For the convenience of application, the standard is handled in the form of increasing the total height of the flange, and Table 3 (correction table of the height H of the long neck butt welding flange) is added for this purpose. d) The inspection requirements for the welded joints between the long neck flange and the cylinder are improved. The stress level of the connection weld between the long neck flange and the cylinder is very high, which is the weak link of the flange strength. In the calculation, the weld coefficient is taken as 1.0. For this reason, the requirement of 100% inspection is proposed for it, and it is controlled at the corresponding level. At the same time, the thinning requirements of the straight edge section of the flange are modified.
4 Stud material impact energy requirements.
The impact energy index required for the stud material is changed to Akv5. It is allowed to modify the selection of some dimensions of the standard flange. In order to facilitate the application of standard flanges, it is allowed to select standard flanges based on the modification of some dimensions, and the marking method is given. 6 The structural dimensions of each standard gasket and the connection dimensions of each standard flange are not changed in the new standard. The dimensions of a few flanges have been adjusted.10 General Containers Issuing Department: General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China Standardization Administration of China Issuing Date: 2017-05-12
5.4 The metal surface is not allowed to have defects such as scratches and rust spots that affect the sealing performance. Check the standard
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5.5When making gaskets, try to use a whole metal plate. If splicing is allowed due to large diameter and insufficient plate width, the number of splicing is generally 2~3. The butt cut should be cut into 45° and argon arc welding or gas welding should be used. The butt weld must be ground flush with the parent material. The welded joint shall be subjected to cold bending test according to the provisions of GB/T232. The bending radius is 1.5mm and the bending angle is 180°. No cracks shall appear at the weld of the cold-bent specimen and the adjacent parent material: no radial through-marks shall be present on the surface of the metal sheet. 5.6 The thickness of the filler material shall be uniform over the entire section. Industrial Standards Network
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National Standard
Maximum Working Load of Flat Pallet
Standard Number: GB/T 34394-2017 Standard Status: Current Standard Price: 29.0 Yuan
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This standard specifies the method for determining the maximum working load of new flat pallets under known effective load conditions in different operating environments.
This standard is applicable to the determination of the maximum working load of flat pallets for material handling. English name: Maximum working load for flat pallets③Winning category: Comprehensive>>Marking, packaging, transportation, storage>>A85Containers, pallets, shelves?ICS classification: Packaging and transportation of goods>>Freight transportation>>55.180.20General pallets?Standard adoption: ISO 8611-3:2011 MODIssuing department: General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of ChinaIssuing date: 2017-10-14
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JB/T4700~4707—2000 Revision Notes
In accordance with the 1997~1998 pressure vessel standard formulation and revision plan of the National Pressure Vessel Standardization Technical Committee, the compilation team revised the standard based on the feedback and opinions collected from all aspects during the six years since the implementation of the standard. This standard focuses on the revision of the following aspects: 1. The relationship between this standard and the flange design method in the steel pressure vessel standard GB150 is clarified. The revised standard points out that this standard should be used first for pressure vessel flanges. The flanges selected according to this standard can be exempted from the relevant calculations of GB150. When this standard cannot meet the design selection requirements, GB150 can be used for design. 2. All referenced standards are updated to the latest version. 3. The long-neck butt welding flange standard has been further improved. a) The applicable temperature range of the standard is expanded to -70°C. Two types of domestic low-temperature forging steels are added to the standard, among which: 16MnD can meet the use requirements of -40°C; 09MnNiD can meet the use requirements of -70°C.
Additional adjustments have been made to Table 2 (flange, gasket, stud, nut material matching table) and Table 7 (maximum allowable working pressure of long-neck flanges) in the standard.
b) Adapt to the use requirements of 3mm corrosion allowance of flange materials. The material corrosion allowance has a direct impact on the effective thickness of the small end of the flange cone neck, and the maximum stress (axial stress) of the flange usually occurs there, so the corrosion allowance has a greater impact on the flange strength. For this reason, it is often necessary to increase the structural dimensions of the flange, and generally the thickness of the flange ring can be increased. When the required thickness increase is large, it is advisable to adjust the thickness of the small end of the cone neck (i.e., the thickness of the straight edge section of the flange). According to the above principles, the structural dimensions of the long-neck flange standard (flange ring thickness or cone neck small end thickness) are readjusted through calculation, so that the long-neck flange standard can adapt to the 3mm corrosion allowance requirement, but the structural dimensions change constantly. For type B flanges, considering the 3mm flange corrosion allowance will increase the thickness of the flange ring or increase the thickness of the short section. In order to avoid unnecessary waste, the corrosion allowance adapted by this standard is still 2mm. When the 3mm allowance needs to be considered, the method of increasing the thickness of the short section can be adopted.
c) Adapt to the need to connect with thinner cylindrical shells. The standard gives the minimum thickness of the butt cylinder. When it is necessary to connect with a thinner cylinder with a smaller thickness, the length of the straight side section that needs to be lengthened by the long neck flange to meet the strength requirements is calculated. For the convenience of application, the standard is handled in the form of increasing the total height of the flange, and Table 3 (correction table of the height H of the long neck butt welding flange) is added for this purpose. d) The inspection requirements for the welding joints between the long neck flange and the cylinder are improved. The stress level of the connection weld between the long neck flange and the cylinder is very high, which is the weak link of the flange strength. In the calculation, the weld coefficient is taken as 1.0. For this reason, the requirement of 100% inspection is proposed for it, and it is controlled at the corresponding level. At the same time, the thinning requirements of the straight side section of the flange are modified.
4 Impact energy requirements for stud materials.
The impact energy index required for stud materials is changed to Akv5. It is allowed to modify the selection of some dimensions of standard flanges. In order to facilitate the application of standard flanges, it is allowed to select standard flanges based on the modification of some dimensions, and the marking method is given. 6 The structural dimensions of each standard gasket and the connection dimensions of each standard flange are not changed in the new standard. The dimensions of a few flanges have been adjusted.0 yuan
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This standard specifies the method for determining the maximum working load of a new flat pallet under different operating environments under known effective load conditions.
This standard is applicable to the determination of the maximum working load of a flat pallet for material handling. English name: Maximum working load for flat pallets③Successful bid classification: Comprehensive >> Marking, packaging, transportation, storage >> A85 container, pallet, shelf?ICS classification: Packaging and transportation of goods >> Freight transportation >> 55.180.20 General pallet?Standard adoption: ISO 8611-3:2011 MODIssuing department: General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of ChinaStandardization Administration of ChinaIssuing date: 2017-10-14
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Container electronic box sealing ring
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Read and print PDF1
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JB/T4700~4707—2000 Revision Notes
In accordance with the 1997~1998 pressure vessel standard formulation and revision plan of the National Pressure Vessel Standardization Technical Committee, the compilation team revised the standard based on the feedback and opinions collected from all aspects during the six years since the implementation of the standard. This standard focuses on the revision of the following aspects: 1. The relationship between this standard and the flange design method in the steel pressure vessel standard GB150 is clarified. The revised standard points out that this standard should be used first for pressure vessel flanges. The flanges selected according to this standard can be exempted from the relevant calculations of GB150. When this standard cannot meet the design selection requirements, GB150 can be used for design. 2. All referenced standards are updated to the latest version. 3. The long-neck butt welding flange standard has been further improved. a) The applicable temperature range of the standard is expanded to -70°C. Two types of domestic low-temperature forging steels are added to the standard, among which: 16MnD can meet the use requirements of -40°C; 09MnNiD can meet the use requirements of -70°C.
Additional adjustments have been made to Table 2 (flange, gasket, stud, nut material matching table) and Table 7 (maximum allowable working pressure of long-neck flanges) in the standard.
b) Adapt to the use requirements of 3mm corrosion allowance of flange materials. The material corrosion allowance has a direct impact on the effective thickness of the small end of the flange cone neck, and the maximum stress (axial stress) of the flange usually occurs there, so the corrosion allowance has a greater impact on the flange strength. For this reason, it is often necessary to increase the structural dimensions of the flange, and generally the thickness of the flange ring can be increased. When the required thickness increase is large, it is advisable to adjust the thickness of the small end of the cone neck (i.e., the thickness of the straight edge section of the flange). According to the above principles, the structural dimensions of the long-neck flange standard (flange ring thickness or cone neck small end thickness) are readjusted through calculation, so that the long-neck flange standard can adapt to the 3mm corrosion allowance requirement, but the structural dimensions change constantly. For type B flanges, considering the 3mm flange corrosion allowance will increase the thickness of the flange ring or increase the thickness of the short section. In order to avoid unnecessary waste, the corrosion allowance adapted by this standard is still 2mm. When the 3mm allowance needs to be considered, the method of increasing the thickness of the short section can be adopted.
c) Adapt to the need to connect with thinner cylindrical shells. The standard gives the minimum thickness of the butt cylinder. When it is necessary to connect with a thinner cylinder with a smaller thickness, the length of the straight side section that needs to be lengthened by the long neck flange to meet the strength requirements is calculated. For the convenience of application, the standard is handled in the form of increasing the total height of the flange, and Table 3 (correction table of the height H of the long neck butt welding flange) is added for this purpose. d) The inspection requirements for the welding joints between the long neck flange and the cylinder are improved. The stress level of the connection weld between the long neck flange and the cylinder is very high, which is the weak link of the flange strength. In the calculation, the weld coefficient is taken as 1.0. For this reason, the requirement of 100% inspection is proposed for it, and it is controlled at the corresponding level. At the same time, the thinning requirements of the straight side section of the flange are modified.
4 Impact energy requirements for stud materials.
The impact energy index required for stud materials is changed to Akv5. It is allowed to modify the selection of some dimensions of standard flanges. In order to facilitate the application of standard flanges, it is allowed to select standard flanges based on the modification of some dimensions, and the marking method is given. 6 The structural dimensions of each standard gasket and the connection dimensions of each standard flange are not changed in the new standard. The dimensions of a few flanges have been adjusted.0 yuan
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This standard specifies the method for determining the maximum working load of a new flat pallet under different operating environments under known effective load conditions.
This standard is applicable to the determination of the maximum working load of a flat pallet for material handling. English name: Maximum working load for flat pallets③Successful bid classification: Comprehensive >> Marking, packaging, transportation, storage >> A85 container, pallet, shelf?ICS classification: Packaging and transportation of goods >> Freight transportation >> 55.180.20 General pallet?Standard adoption: ISO 8611-3:2011 MODIssuing department: General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of ChinaStandardization Administration of ChinaIssuing date: 2017-10-14
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Reminder: Standard update
Timeliness of purchased standards
Frequently asked questions
Why can't I find my
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Standards you have browsed
Container electronic box sealing ring
Required software download
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Read and print PDF1
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JB/T4700~4707—2000 Revision Notes
In accordance with the 1997~1998 pressure vessel standard formulation and revision plan of the National Pressure Vessel Standardization Technical Committee, the compilation team revised the standard based on the feedback and opinions collected from all aspects during the six years since the implementation of the standard. This standard focuses on the revision of the following aspects: 1. The relationship between this standard and the flange design method in the steel pressure vessel standard GB150 is clarified. The revised standard points out that this standard should be used first for pressure vessel flanges. The flanges selected according to this standard can be exempted from the relevant calculations of GB150. When this standard cannot meet the design selection requirements, GB150 can be used for design. 2. All referenced standards are updated to the latest version. 3. The long-neck butt welding flange standard has been further improved. a) The applicable temperature range of the standard is expanded to -70°C. Two types of domestic low-temperature forging steels are added to the standard, among which: 16MnD can meet the use requirements of -40°C; 09MnNiD can meet the use requirements of -70°C.
Additional adjustments have been made to Table 2 (flange, gasket, stud, nut material matching table) and Table 7 (maximum allowable working pressure of long-neck flanges) in the standard.
b) Adapt to the use requirements of 3mm corrosion allowance of flange materials. The material corrosion allowance has a direct impact on the effective thickness of the small end of the flange cone neck, and the maximum stress (axial stress) of the flange usually occurs there, so the corrosion allowance has a greater impact on the flange strength. For this reason, it is often necessary to increase the structural dimensions of the flange, and generally the thickness of the flange ring can be increased. When the required thickness increase is large, it is advisable to adjust the thickness of the small end of the cone neck (i.e., the thickness of the straight edge section of the flange). According to the above principles, the structural dimensions of the long-neck flange standard (flange ring thickness or cone neck small end thickness) are readjusted through calculation, so that the long-neck flange standard can adapt to the 3mm corrosion allowance requirement, but the structural dimensions change constantly. For type B flanges, considering the 3mm flange corrosion allowance will increase the thickness of the flange ring or increase the thickness of the short section. In order to avoid unnecessary waste, the corrosion allowance adapted by this standard is still 2mm. When the 3mm allowance needs to be considered, the method of increasing the thickness of the short section can be adopted.
c) Adapt to the need to connect with thinner cylindrical shells. The standard gives the minimum thickness of the butt cylinder. When it is necessary to connect with a thinner cylinder with a smaller thickness, the length of the straight side section that needs to be lengthened by the long neck flange to meet the strength requirements is calculated. For the convenience of application, the standard is handled in the form of increasing the total height of the flange, and Table 3 (correction table of the height H of the long neck butt welding flange) is added for this purpose. d) The inspection requirements for the welding joints between the long neck flange and the cylinder are improved. The stress level of the connection weld between the long neck flange and the cylinder is very high, which is the weak link of the flange strength. In the calculation, the weld coefficient is taken as 1.0. For this reason, the requirement of 100% inspection is proposed for it, and it is controlled at the corresponding level. At the same time, the thinning requirements of the straight side section of the flange are modified.
4 Impact energy requirements for stud materials.
The impact energy index required for stud materials is changed to Akv5. It is allowed to modify the selection of some dimensions of standard flanges. In order to facilitate the application of standard flanges, it is allowed to select standard flanges based on the modification of some dimensions, and the marking method is given. 6 The structural dimensions of each standard gasket and the connection dimensions of each standard flange are not changed in the new standard. The dimensions of a few flanges have been adjusted.2011 MOD Issued by: General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China Standardization Administration of China Issued on: 2017-10-14
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Why can't I find my
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Standards you have browsed
Container electronic box sealing ring
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Read and print PDF1
Through it, you can view this
Click here
JB/T4700~4707—2000 Revision Notes
In accordance with the 1997~1998 pressure vessel standard formulation and revision plan of the National Pressure Vessel Standardization Technical Committee, the compilation team revised the standard based on the feedback and opinions collected from all aspects during the six years since the implementation of the standard. This standard focuses on the revision of the following aspects: 1. The relationship between this standard and the flange design method in the steel pressure vessel standard GB150 is clarified. The revised standard points out that this standard should be used first for pressure vessel flanges. The flanges selected according to this standard can be exempted from the relevant calculations of GB150. When this standard cannot meet the design selection requirements, GB150 can be used for design. 2. All referenced standards are updated to the latest version. 3. The long-neck butt welding flange standard has been further improved. a) The applicable temperature range of the standard is expanded to -70°C. Two types of domestic low-temperature forging steels are added to the standard, among which: 16MnD can meet the use requirements of -40°C; 09MnNiD can meet the use requirements of -70°C.
Additional adjustments have been made to Table 2 (flange, gasket, stud, nut material matching table) and Table 7 (maximum allowable working pressure of long-neck flanges) in the standard.
b) Adapt to the use requirements of 3mm corrosion allowance of flange materials. The material corrosion allowance has a direct impact on the effective thickness of the small end of the flange cone neck, and the maximum stress (axial stress) of the flange usually occurs there, so the corrosion allowance has a greater impact on the flange strength. For this reason, it is often necessary to increase the structural dimensions of the flange, and generally the thickness of the flange ring can be increased. When the required thickness increase is large, it is advisable to adjust the thickness of the small end of the cone neck (i.e., the thickness of the straight edge section of the flange). According to the above principles, the structural dimensions of the long-neck flange standard (flange ring thickness or cone neck small end thickness) are readjusted through calculation, so that the long-neck flange standard can adapt to the 3mm corrosion allowance requirement, but the structural dimensions change constantly. For type B flanges, considering the 3mm flange corrosion allowance will increase the thickness of the flange ring or increase the thickness of the short section. In order to avoid unnecessary waste, the corrosion allowance adapted by this standard is still 2mm. When the 3mm allowance needs to be considered, the method of increasing the thickness of the short section can be adopted.
c) Adapt to the need to connect with thinner cylindrical shells. The standard gives the minimum thickness of the butt cylinder. When it is necessary to connect with a thinner cylinder with a smaller thickness, the length of the straight side section that needs to be lengthened by the long neck flange to meet the strength requirements is calculated. For the convenience of application, the standard is handled in the form of increasing the total height of the flange, and Table 3 (correction table of the height H of the long neck butt welding flange) is added for this purpose. d) The inspection requirements for th
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