This standard specifies the characteristics of tank container interfaces. GB/T 17423-1998 Series 1 Containers Tank container interfaces GB/T17423-1998 Standard download decompression password: www.bzxz.net
This standard specifies the characteristics of tank container interfaces.

GB/T174231998
This standard is equivalent to the international standards ISO9669:1990 and ISO9669AMENDMENT1:1992 Series 1 Containers - Interfaces for Tank Containers".
The container type codes cited in this standard are codes compiled by mixing letters and numbers in accordance with the provisions of GB/T1836-1997. This standard is technically a supporting standard of GBT16563-1996 "Series 1: Technical Requirements and Test Methods for Tank Containers for Carboxylic Acids, Gases and Pressurized Dry Bulk" (idrIS01496-3:1995). Appendix A of this standard is a prompt appendix.
This standard was proposed by the Ministry of Railways of the People's Republic of China. This standard is under the jurisdiction of the National Technical Committee for Container Standardization. The drafting units of this standard are: Standard Metrology Institute of the Ministry of Railways, Standard Metrology Institute of the Ministry of Transport. The main chapter authors of this standard are: Qi Xiangchun, Tang Ruiying, and Zhang Jingxuan. 640
GT174231998
ISO Foreword
The International Organization for the Promotion of Standards (ISO) is a worldwide federation of national standardization bodies (ISO member bodies). The drafting of international standards is generally carried out through the technical committees established by ISO. Each member body has the right to send representatives to participate in the technical committees on the topics of concern to it. All governmental and non-governmental international organizations that have liaison relations with ISO also participate in the relevant work. ISC maintains close cooperation with the International Electrotechnical Commission (IEC) in all aspects of electrical standardization. The international standard proposals issued by the technical committees are distributed to the member bodies for comments before being adopted as international standards by the ISO Council. According to the ISO procedure requirements, only those with more than 75% of the votes in the member body vote can it be officially published as an international standard. The international standard ISO9669 was drafted by ISO/TC104 Technical Committee on Containers. GB/T17423—1998
This standard is formulated to reduce the many problems caused by the wide variety of interfaces in the use of tank containers. In practice, people are increasingly aware of the importance of standards for tank container interfaces in the production and use of tank containers. Therefore, with the joint efforts of tank container manufacturers and users, we have formulated this international standard for tank container interfaces. This standard is also to ensure that tank containers with flange interfaces can adapt to the provisions of local national standards when they arrive in other countries. This standard improves the consistency of interfaces in use by limiting the types of interfaces, which is of great significance for the daily management and emergency handling of tank containers.
National Standard of the People's Republic of China
Series 1 Container
Interface connections for tank containers
idt IsO 9669:1990
ISO 9669Amd.1:1992
Series 1 freight containers-Interface connections for tank containers1 General
1.1 Scope
This standard specifies the characteristics of tank container interfaces. This standard consists of 4 chapters.
Chapter 1 gives the definitions related to interfaces as well as the test and welding requirements. Chapter 2 specifies the relevant dimensions of tank container interface flanges with type codes TO to T7 and B3 to B6. Chapter 3 specifies the dimensions and requirements of manholes and manhole covers for liquid and pressurized dry bulk tank containers with type codes TO to T6 and B3 to B6 with a test pressure not exceeding 600kPa. Chapter 4 specifies the requirements for interface bolt threads. 1.2 Referenced standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T1836--1997 Container Code, Identification and Marking (idtISO6346:1995) GB/T16563--1996 Series 1: Technical Requirements and Test Methods for Liquid, Gas and Pressurized Dry Bulk Tank Containers (idtISO1496-3:1995)
1.3 Definitions
This standard adopts the following definitions.
1.3.1 Tank container A tank container has two basic parts, namely a container consisting of a single tank or multiple tanks and a frame and meeting the requirements of ISO1496-3. 1.3.2 Gas gas
Fluid with a vapor pressure higher than 300 kPa (absolute pressure) in an environment of 50°C or the meaning given by the competent authority (see 1.3.6). 1.3.3 Liquid liquid
Fluid with a vapor pressure not higher than 300 kPa (absolute pressure) in an environment of 50°C. 1.3.4 Dry bulk dry bulk
Goods composed of solid granular solids and having a certain fluidity. 1.3.5 Dangerous goods dangerous goods Articles classified as dangerous goods by the United Nations Committee of Experts on the Transport of Dangerous Goods or the competent authority (see 1.3.6). 1.3.6 Competent authority country or the organization designated by the country to be responsible for the certification of tank containers. 1.3.7 Maximum allowable working pressure maximum allowable working pressure The operating pressure of this type of tank determined by the competent authority, which shall not be exceeded during use. 1. 3. 8 Test pressure test pressure The gauge pressure used when testing the tank.
Approved by the State Administration of Quality and Technical Supervision on July 5, 1998 and implemented on May 1, 1999
1.3.9 Flange
Interface connected by bolts.
1.3.10 Interface
Related devices of the joint surface of the part connected to the outside world. 1.3.11 Connections
Joints within the interface range.
1.3.12 Openings
Inlet and outlet and special openings of tank containers. 1.4 Design requirements
1.4.1 Test
GB/T 17423 --1998
Each interface in the tank body shall be subjected to pressure test according to the requirements of the tank body. 1.4.2 Welding
Welding preparation and welding of interfaces and other components shall comply with the design requirements of the tank body. 2 Interface flanges
2.1 Overview
2.1.1 This standard specifies the interface flange dimensions for the type codes T0 to T7 and B3 to B6 listed in GB/T16563, i.e., liquid, gas and dry bulk tank containers when the maximum allowable working pressure does not exceed 1000kPa (test pressure 1500kPa). 2.1.2 The interface dimensions specified in this standard are only applicable to the interface flanges connected to the loading and unloading equipment on the tank container. 2.2 Dimensions
The interface flange structure is shown in Figure 1.
The dimension requirements of each part of the interface are shown in Table 1.
Table 1 Dimensions of various parts
Nominal hole diameter
40 (1)
Flange outer diameter
Boss outer diameter
Center hole diameter
Figure 1 Flange (see Table 1)
Pitch circle diameter
mm(in)
Slot width
2.3 Flange thickness
The minimum thickness of the flange is shown in Table 2.
Carbon steel
Stainless steel
3 Manholes and manhole covers
3.1 Overview
GB/T 17423—1998
Table 2 Minimum thickness of flange
Maximum tensile strength/(N/mm2)
Thickness/mm
3.1.1 This chapter specifies the dimensions and functions of manholes and covers of tank containers. These regulations are to ensure that operators can inspect and clean the tank body, are easy to operate during operation, and have convenient access in emergency situations. At the same time, these regulations are also conducive to improving the compatibility of accessories provided by different manufacturers, facilitating emergency maintenance and parts replacement. 3.1.2 The dimensions and functions specified in this chapter apply to the type codes T0 to T6 and B3 to B6 listed in GB/T16563, that is, liquid and pressurized dry bulk tank containers with a test pressure not exceeding 600kPa. 3.1.3 Unless otherwise specified, the provisions of this standard are the minimum requirements. Tank containers used to transport dangerous goods shall also comply with the international and national transportation regulations specified by the relevant competent authorities. 3.2 Size and function
3.2.1—General requirements
The dimensions listed in this section are mainly for the manhole on the tank body. The dimensions specified for the cross section of the hinge pin and the sealing ring must also take into account other openings on the tank body with flip covers. For example, the cleaning hole set above the highest cargo position. When the manhole cover is in the open position, attention must be paid to its firmness to ensure safety. 3.2.2 Pressure requirements
The structure of the manhole and its cover shall comply with the classification requirements of the pressure vessel. 3.2.3 Opening diameter
The inner diameter of the manhole is 500mm±1mm (see ΦA in Figure 2), and the fillet radius of its edge shall not exceed 5mm. 3.2.4 Ring gasket of manhole cover
3.2.4.1 The ring gasket of the manhole cover shall be embedded in the cover groove and shall not be exposed. 3.2.4.2 The nominal inner diameter of the ring gasket is 490mm (see B in Figure 2). 3.2.4.3 The nominal dimensions of the cross section of the annular gasket are 16 mm × 10 mm or 16 mm × 16 mm. 3.2.4.4 The hinge plate of the manhole cover needs to be slotted to accommodate the 16 mm × 10 mm or 16 mm × 16 mm gasket. 3.2.5 Swivel bolts
Six swivel bolts are evenly arranged around the manhole (see Figure 2). 3.2.5.1
3.2.5.2 The hinge axis of the swivel bolt is set on a circle with the center of the manhole as the center and a radius of 285 mm (see dimension C in Figure 2). The hinge axis diameter of the swivel bolt is 19 mm (see D in Figure 2). 3.2.5.3
3.2.5.4 In this chapter, no specific provisions are made for the threads of the swivel bolts, but their interchangeability must be ensured. It is recommended to use the universal M20 metric thread specified by ISO (see ISO261 for details). 3.2.6 Grooves for swivel bolts
The width of the groove for the swivel bolt is 22 mm (see dimension F in Figure 2), and it should have the function of preventing slippage when pressed. 3.3 Marking
The manhole cover should be permanently marked with the maximum design working pressure and test pressure. 645
4 Interface threads
4.1 Overview
GB/T17423—1998
Sealing gasket
Figure 2 Dimensions of manholes and manhole covers
This section specifies the thread dimensions of the interface bolts for liquid and pressurized dry bulk tank containers with type codes T0 to T6 and B3 to B6 listed in GB/T16563 and test pressure not exceeding 600 kPa. The above provisions apply to loading and unloading interfaces, external cold and heat source interfaces, and air and inert gas pressure pipe interfaces. The thread conforms to the external thread listed in ISO228, and its tolerance is Class A. 4.2 Symbols
The symbols used in 4.4, Figure 3 and Table 3 have the following meanings: Sealing grade of external thread tolerance of pipes for pressure fittings that do not bear pressure with the help of threadsA
Major diameter of external thread
=d-1.280654P; Minor diameter of external thread
d=d-0.640327P, Middle diameter of external thread
D-d; Major diameter of internal thread
=D1.280654P=di; Minor diameter of internal thread
=D-0.640327P=d2; Middle diameter of internal threadPipe thread G
Tooth profile height
Original triangle height
Arc radius of screw crest and screw valley
T'Trapezoidal thread
T. Tolerance of major diameter of external thread
Ta2 Tolerance of middle diameter of external thread
T'DI Tolerance of minor diameter of internal thread
T'D2 Tolerance of middle diameter of internal thread
4.3 Dimensions
GB/T 17423—1998
4.3.1 The dimensions of various parts of the thread are shown in Figure 3 and Table 3. Table 3 Thread size
G 1/4 T
G 1/2 T
Pitch P
mm(in)
(0.090 9)
mm(in)
Basic diameter
mm(in)
mm(in)
(0.484 3)(0. 450 6)
(0. 622 3)
(0.588 6)
(0. 779 3)
24,117
(0.9953)(0.949 6)
(1. 250 8) /(1. 192 6)
(1.882)(1.823 8)(1.765 6)
Note: Imperial sizes listed are for reference only.
(2. 288 8)
(2.843 6)
(3.401 8)
(4. 391 8) /(4. 333 6)
135,472
(5.333 6)
(5. 391 8)
Tolerance of pitch diameter
Internal thread
Upper deviation
mm(in)
External thread
Lower deviation
mm(in)
(0. 004 9) /(0. 004 9)
(0. 005 6)
(0.005 6)
(0. 007 1) /(0. 007 1)
(0. 008 5)
(0. 008 5)
Tolerance of minor diameterTolerance of major diameter
Internal thread
Upper deviation
mm(in)
External thread
Lower deviation
mm(in)
(0. 017 5)
(0.021 3)
（0.011)
(0. 025 2)(0. 017)
H=0.960491P
h= 0. 640327P
r -- 0. 137329P
GB/T17423-1998
Figure 3 Thread profile and tolerance zone
4.3.2 The peak of the external thread shall be flattened according to the major diameter tolerance value shown in Table 3. 4.4 Code
The thread identification code of this standard shall be in accordance with the provisions of ISO228-1. Example: G1/2T
Truncate according to the 1/2 thread of ISO228-1, and its code is: Internal thread: ISO228-1 pipe thread G1/2
External thread: ISO228-1 pipe thread G1/2A
Note: ISO228-1 does not include the code for trapezoidal threads. 648
GB/T17423
3-1998
Appendix A
(Suggestive Appendix)
References
Basic dimensions
1) ISO261:1973ISO ordinary metric thread 2 non-threaded sealed pipe thread
2) ISO228-1:19826 Grooves for slewing bolts
The width of the groove for slewing bolts is 22 mm (see dimension F in Figure 2). It should have the function of preventing slippage when pressed. 3.3 Marking
The manhole cover should be permanently marked with the maximum design working pressure and test pressure. 645
4 Interface threads
4.1 Overview
GB/T17423—1998
Sealing gasket
Figure 2 Dimensions of manholes and manhole covers
This section specifies the thread dimensions of the interface bolts for liquid and pressurized dry bulk tank containers with type codes T0 to T6 and B3 to B6 listed in GB/T16563 and test pressure not exceeding 600 kPa. The above provisions apply to loading and unloading interfaces, external cold and heat source interfaces, and air and inert gas pressure pipe interfaces. The thread conforms to the external thread listed in ISO228 and its tolerance is Class A. 4.2 Symbols
The symbols used in 4.4, Figure 3 and Table 3 have the following meanings: Sealing grade of external thread tolerance of pipes for pressure fittings that do not bear pressure with the help of threadsA
Major diameter of external thread
=d-1.280654P; Minor diameter of external thread
d=d-0.640327P, Middle diameter of external thread
D-d; Major diameter of internal thread
=D1.280654P=di; Minor diameter of internal thread
=D-0.640327P=d2; Middle diameter of internal threadPipe thread G
Tooth profile height
Original triangle height
Arc radius of screw crest and screw valley
T'Trapezoidal thread
T. Tolerance of major diameter of external thread
Ta2 Tolerance of middle diameter of external thread
T'DI Tolerance of minor diameter of internal thread
T'D2 Tolerance of middle diameter of internal thread
4.3 Dimensions
GB/T 17423—1998
4.3.1 The dimensions of various parts of the thread are shown in Figure 3 and Table 3. Table 3 Thread size
G 1/4 T
G 1/2 T
Pitch P
mm(in)
(0.090 9)
mm(in)
Basic diameter
mm(in)
mm(in)
(0.484 3)(0. 450 6)
(0. 622 3)
(0.588 6)
(0. 779 3)
24,117
(0.9953)(0.949 6)
(1. 250 8) /(1. 192 6)
(1.882)(1.823 8)(1.765 6)
Note: Imperial sizes listed are for reference only.
(2. 288 8)
(2.843 6)
(3.401 8)
(4. 391 8) /(4. 333 6)
135,472
(5.333 6)
(5. 391 8)
Tolerance of pitch diameter
Internal thread
Upper deviation
mm(in)
External thread
Lower deviation
mm(in)
(0. 004 9) /(0. 004 9)
(0. 005 6)
(0.005 6)
(0. 007 1) /(0. 007 1)
(0. 008 5)
(0. 008 5)
Tolerance of minor diameterTolerance of major diameter
Internal thread
Upper deviation
mm(in)
External thread
Lower deviation
mm(in)
(0. 017 5)
(0.021 3)
（0.011)
(0. 025 2)(0. 017)
H=0.960491P
h= 0. 640327P
r -- 0. 137329P
GB/T17423-1998
Figure 3 Thread profile and tolerance zone
4.3.2 The peak of the external thread shall be flattened according to the major diameter tolerance value shown in Table 3. 4.4 Code
The thread identification code of this standard shall be in accordance with the provisions of ISO228-1. Example: G1/2T
Truncate according to the 1/2 thread of ISO228-1, and its code is: Internal thread: ISO228-1 pipe thread G1/2
External thread: ISO228-1 pipe thread G1/2A
Note: ISO228-1 does not include the code for trapezoidal threads. 648
GB/T17423
3-1998
Appendix A
(Suggestive Appendix)
References
Basic dimensions
1) ISO261:1973ISO ordinary metric thread 2 non-threaded sealed pipe thread
2) ISO228-1:19826 Grooves for slewing bolts
The width of the groove for slewing bolts is 22 mm (see dimension F in Figure 2). It should have the function of preventing slippage when pressed. 3.3 Marking
The manhole cover should be permanently marked with the maximum design working pressure and test pressure. 645
4 Interface threads
4.1 Overview
GB/T17423—1998www.bzxz.net
Sealing gasket
Figure 2 Dimensions of manholes and manhole covers
This section specifies the thread dimensions of the interface bolts for liquid and pressurized dry bulk tank containers with type codes T0 to T6 and B3 to B6 listed in GB/T16563 and test pressure not exceeding 600 kPa. The above provisions apply to loading and unloading interfaces, external cold and heat source interfaces, and air and inert gas pressure pipe interfaces. The thread conforms to the external thread listed in ISO228 and its tolerance is Class A. 4.2 Symbols
The symbols used in 4.4, Figure 3 and Table 3 have the following meanings: Sealing grade of external thread tolerance of pipes for pressure fittings that do not bear pressure with the help of threadsA
Major diameter of external thread
=d-1.280654P; Minor diameter of external thread
d=d-0.640327P, Middle diameter of external thread
D-d; Major diameter of internal thread
=D1.280654P=di; Minor diameter of internal thread
=D-0.640327P=d2; Middle diameter of internal threadPipe thread G
Tooth profile height
Original triangle height
Arc radius of screw crest and screw valley
T'Trapezoidal thread
T. Tolerance of major diameter of external thread
Ta2 Tolerance of middle diameter of external thread
T'DI Tolerance of minor diameter of internal thread
T'D2 Tolerance of middle diameter of internal thread
4.3 Dimensions
GB/T 17423—1998
4.3.1 The dimensions of various parts of the thread are shown in Figure 3 and Table 3. Table 3 Thread size
G 1/4 T
G 1/2 T
Pitch P
mm(in)
(0.090 9)
mm(in)
Basic diameter
mm(in)
mm(in)
(0.484 3)(0. 450 6)
(0. 622 3)
(0.588 6)
(0. 779 3)
24,117
(0.9953)(0.949 6)
(1. 250 8) /(1. 192 6)
(1.882)(1.823 8)(1.765 6)
Note: Imperial sizes listed are for reference only.
(2. 288 8)
(2.843 6)
(3.401 8)
(4. 391 8) /(4. 333 6)
135,472
(5.333 6)
(5. 391 8)
Tolerance of pitch diameter
Internal thread
Upper deviation
mm(in)
External thread
Lower deviation
mm(in)
(0. 004 9) /(0. 004 9)
(0. 005 6)
(0.005 6)
(0. 007 1) /(0. 007 1)
(0. 008 5)
(0. 008 5)
Tolerance of minor diameterTolerance of major diameter
Internal thread
Upper deviation
mm(in)
External thread
Lower deviation
mm(in)
(0. 017 5)
(0.021 3)
（0.011)
(0. 025 2)(0. 017)
H=0.960491P
h= 0. 640327P
r -- 0. 137329P
GB/T17423-1998
Figure 3 Thread profile and tolerance zone
4.3.2 The peak of the external thread shall be flattened according to the major diameter tolerance value shown in Table 3. 4.4 Code
The thread identification code of this standard shall be in accordance with the provisions of ISO228-1. Example: G1/2T
Truncate according to the 1/2 thread of ISO228-1, and its code is: Internal thread: ISO228-1 pipe thread G1/2
External thread: ISO228-1 pipe thread G1/2A
Note: ISO228-1 does not include the code for trapezoidal threads. 648
GB/T17423
3-1998
Appendix A
(Suggestive Appendix)
References
Basic dimensions
1) ISO261:1973ISO ordinary metric thread 2 non-threaded sealed pipe thread
2) ISO228-1:1982391 8)
Tolerance of median diameter
Internal thread
Upper deviation
mm(in)
External thread
Lower deviation
mm(in)
(0. 004 9) /(0. 004 9)
(0. 005 6)
(0. 005 6)
(0. 007 1) /(0. 007 1)
(0. 008 5)
(0. 008 5)
Tolerance of small diameterTolerance of large diameter
Internal thread
Upper deviation
mm(in)
External thread
Lower deviation
mm(in)
(0. 017 5)
(0.021 3)
（0.011)
(0. 025 2)(0. 017)
H=0.960491P
h= 0. 640327P
r -- 0. 137329P
GB/T17423-1998
Figure 3 Thread profile and tolerance zone
4.3.2 The peak of the external thread shall be flattened according to the major diameter tolerance value shown in Table 3. 4.4 Code
The thread identification code of this standard shall be in accordance with the provisions of ISO228-1. Example: G1/2T
Truncate according to the 1/2 thread of ISO228-1, and its code is: Internal thread: ISO228-1 pipe thread G1/2
External thread: ISO228-1 pipe thread G1/2A
Note: ISO228-1 does not include the code for trapezoidal threads. 648
GB/T17423
3-1998
Appendix A
(Suggestive Appendix)
References
Basic dimensions
1) ISO261:1973ISO ordinary metric thread 2 non-threaded sealed pipe thread
2) ISO228-1:1982391 8)
Tolerance of median diameter
Internal thread
Upper deviation
mm(in)
External thread
Lower deviation
mm(in)
(0. 004 9) /(0. 004 9)
(0. 005 6)
(0. 005 6)
(0. 007 1) /(0. 007 1)
(0. 008 5)
(0. 008 5)
Tolerance of small diameterTolerance of large diameter
Internal thread
Upper deviation
mm(in)
External thread
Lower deviation
mm(in)
(0. 017 5)
(0.021 3)
（0.011)
(0. 025 2)(0. 017)
H=0.960491P
h= 0. 640327P
r -- 0. 137329P
GB/T17423-1998
Figure 3 Thread profile and tolerance zone
4.3.2 The peak of the external thread shall be flattened according to the major diameter tolerance value shown in Table 3. 4.4 Code
The thread identification code of this standard shall be in accordance with the provisions of ISO228-1. Example: G1/2T
Truncate according to the 1/2 thread of ISO228-1, and its code is: Internal thread: ISO228-1 pipe thread G1/2
External thread: ISO228-1 pipe thread G1/2A
Note: ISO228-1 does not include the code for trapezoidal threads. 648
GB/T17423
3-1998
Appendix A
(Suggestive Appendix)
References
Basic dimensions
1) ISO261:1973ISO ordinary metric thread 2 non-threaded sealed pipe thread
2) ISO228-1:1982
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