HG/T 2389-1992 Quality classification of steel shell and tube heat exchangers
Some standard content:
Chemical Industry Standard of the People's Republic of China
HG/T2389-92
Steel Shell and Tube Heat Exchanger
Quality Classification Rules
1992-09-15 Issued
Ministry of Chemical Industry of the People's Republic of China
1993-—0701 Implementation
Chemical Industry Standard of the People's Republic of China
Quality Classification Rules for Steel Shell and Tube Heat Exchanger 1 Subject Content and Scope of Application
HG/T2389-—92
This standard specifies the quality classification rules for steel shell and tube heat exchangers (hereinafter referred to as heat exchangers) that are not directly exposed to fire. This standard applies to heat exchanger types: fixed tube sheet type, floating head type, U-tube type and packing box type. This standard applies to heat exchanger parameters: nominal diameter not more than 2000mm; nominal pressure not more than 35MPa; the product of nominal diameter (mm) and nominal pressure (MPa) is not more than 10%. Reference standards
HG/T2388 General rules for quality classification of steel welded pressure vessels GB150 Steel pressure vessels
GB151 Steel shell and tube heat exchanger
JB4708 Welding process assessment for steel pressure vessels 3 Basic requirements for product quality classification
3.1. This standard is the basis for quality inspection by enterprise quality inspection departments, and can also be used by national and departmental quality supervision and inspection agencies for product quality supervision and random inspection or quality inspection.
3.2 The categories and levels of product quality characteristics shall comply with the provisions of Chapter 4 of HG/T2388. 3.3 Product quality grade assessment shall comply with the provisions of Chapter 5 of HG/T2388. 3.4 When conducting quality inspection on products, the inspected party shall submit relevant information of the inspected products and provide all technical documents and quality management documents of the selected products according to the requirements of the inspecting party. 3.5 If parts and components can be inspected on products, they should be inspected on the products to be inspected. Otherwise, parts and components equivalent to the number of products to be inspected shall be taken from the products to be inspected.
Classification rules
4.1 The material part shall comply with the provisions of Table 1. 4.2 The welding part shall comply with the provisions of Table 2. 4.3 The assembly part shall comply with the provisions of Table 3. 4.4 The machining part shall comply with the provisions of Table 4. 4.5 The performance test and accessories part shall comply with the provisions of Table 5. 4.8 The paint, packaging and factory documents part shall comply with the provisions of Table 6. Approved by the Ministry of Chemical Industry of the People's Republic of China on September 15, 1992, and implemented on July 1, 1993
Quality characteristics
Pipe box short joint
Expansion joint
Heat exchange tube
Main bolt
Main nut
Di≥250
Pipe flange
Di≥250
1.14 Reinforcement
Welding materials
(for pressure-bearing components)
Quality characteristics
Classification
HG/T2389-92
Qiu 1 material
Quality characteristic indexes
(1) To reach b level
(2) Before feeding, visual inspection should be carried out, and non-destructive inspection should be carried out when necessary, and corresponding records and reports should be made
(1) To reach level requirements
(2) There is an ordering guide
(1) To reach c level
Inspection method
(1) Material (including substitutes) should be checked
against drawings, GB151 and certificates
(2) There is an ordering guide
and GB150 as well as pressure vessel safety technology|| (1) Comply with the welding process and relevant standards. (2) Carry out acceptance control according to the requirements of the "Regulations" and have corresponding assessment results, excellent quality characteristics, welder qualifications and stamps. |tt||Product welding
2.4 Internal
Property category
238992
Table 2 Welding
Quality characteristic index
(1)Meet the requirements of Class B
(2)Have welder
Stamped part diagram of welds of main
pressure-bearing components of vessels
(1)Meet the requirements of Class B
(2)Have complete welding
process assessment and comply with the provisions of
JB4708
(1)All welding of pressure-bearing components must be performed by welders holding the corresponding type certificate issued by the labor department
welders with valid certificates of special requirements shall be appointed
(2)steel stamps are clear and parts meet the process
requirements (when drawings and process regulations do not allow steel stamps, traceable
certificate materials shall be available)
(1)Comply with the provisions of GB151
(2)the welds of the main pressure-bearing components have welding
procedures have been qualified and meet the requirements of JB4708
Comply with the provisions of Article 10.5 of GB150, and their control certificates are complete and traceable
(1)Meet the requirements of Class B
(2)The same part shall not exceed
(3) 100% radiographic flaw detection level 1 film rate (by number of films) is not less than 85%, local radiographic flaw detection level 1 film rate (by number of films) is not less than 85% (4) The first flaw detection acceptance rate (by number of films) is not less than 94% (1) Reach C level (2) The same part will not be repaired for more than inspection methods Check the welder's file certificate and physical verification voucher t||Verification certificate
(1) Non-destructive testing should verify that the original requirements and results are in compliance with the testing data
GB150 and the corresponding film and film must be in compliance with the standards
(2) The same part should be returned
(3) 100% radiographic repair should be carried out according to the GB150 standard
The film rate (by number of films
) should not be less than
80%, and the local radiographic testing level 1
film rate (by number of films
) should not be less than
(4) The qualified rate of one-time testing
t||(by number of pieces)
not less than 90%
detection when necessary
assessment results
quality characteristics
quality characteristics
characteristics category
A, B type welds
seam reinforcement e
A, B type welds
seam width
CD type welds
seam quality
HG/T2389—92
continued table 2
quality characteristics indicators
(1)meet the requirements of grade b
(2)the reinforcement meets the following requirements
plate thickness:
weld reinforcement.
12<6≤250~2
(1) The width of the weld is not greater than
The outer edge width of the groove plus 4
(2) The width difference of the same weld is not greater than 3
(3) The width difference of the same type of weld is not greater than 5
(1) Meet the requirements of Class B
(2) When the size of the weld leg is less than
or equal to 8, its positive deviation
is 3 and its negative deviation is 1. When the size of the weld leg is greater than 8 and less than
12, its positive deviation
is 4 and its negative deviation is 1. When the size of the weld leg is greater than or equal to
12, its positive deviation is
4 and its negative deviation is 1.5
(1) Reaching C level
(2) The same weld
The difference in height is not large
Less than e/2
Inspection method
Comply with GB150 Weld measurement
(1) The weld width is not greater than the groove outer edge card
Width plus 8
(2) The width difference of the same weld is not greater than
(3) The width difference of the same type of weld is not greater than
(1) Reaching C level
(2) When the weld foot size
When it is less than or equal to 8, the positive deviation is 3 and the negative deviation is 1.5; when the weld foot size is greater than 8 and less than 12, the positive deviation is 4 and the negative deviation is 1.5; when the weld foot size is greater than or equal to 12, the positive deviation is 4 and the negative deviation is 2. Note: The same type of welds refers to those with the same groove, type, size and welding method. .4
(1) Carry out non-destructive testing according to design requirements and meet the design quality requirements
(1) Check
original documents
(2) Weld
measurement instrument
(3) Special
(2) When the weld leg size is less than or equal to 8
, its positive deviation is 3 and its negative deviation is 2. When the weld leg size is greater than 8
and less than 12, its positive deviation is
4 and its negative deviation is
2. When the size of the weld leg is greater than or equal to 12, the positive deviation is 4 and the negative deviation is 3. Assessment results: Grade Grade Quality characteristics Quality requirements Weld appearance 2.9 Weld undercut 2.10 Nondestructive testing Marking documents 2.11 Shell inner side Weld grinding 2.12 Heat exchange tube and tube sheet welding 2.13 Heat exchange tube joint quality Category
HG/T2389-92
Continued Table 2
Quality characteristic index
(1) Meet the requirements of Class B
(2) The weld surface shall not have
rough weld waves, grooves, heavy
climbing, sudden protrusions and depressions
The weld surface shall not have defects such as cracks, pores,
arc pits and slag inclusions, and shall not retain
slag and spatter
Undercut edges are not allowed in the welds of pressure-bearing components
(1) The non-destructive testing certificate complies with the relevant standards
(2) With non-destructive testing mark location map| |tt||Comply with the drawings and
GB150 specifications
(3) Clear markings, accurate positions (when the drawing process does not allow stamping, traceable supporting documents should be available) Smooth transition, the weld should be ground to be flush with the surface of the parent material. Weld slag and weld bumps protruding from the inner wall of the heat exchange tube should be removed (1) Meet the requirements of Class B
(2) The misalignment of the joints should not exceed
10% of the tube wall thickness and not be greater than 0.4
(3) Butt joints should be subjected to
X-ray inspection, and the number of spot checks
should not be less than
15% of the total number of joints. And not less than 2 items: If there is one unqualified item, additional spot check should be carried out; if unqualified items appear again, 100% inspection should be carried out. Verification certificate. Heat exchange tube splicing complies with the requirements of the drawing and GB151 verification certificate. Assessment results. Quality characteristics. Quality characteristics. 2.14 Tube sheet splicing. 2.15 Post-weld heat treatment. 2.16 Welding records. Quality category. HG/T2389-92. Table 2. Quality characteristic index. (1) Reaching Class B Requirements
(2) When the nominal diameter of the shell is less than or equal to 1200, spliced pipes are not allowed
(1) Meet the requirements of Class E
Conform to the drawings and the provisions of GB151
(1) Have a temperature control that meets
(2) Have a temperature control that meets the process specifications and automatic measurement records and reports
Conform to the requirements of the welding process specifications and have complete and accurate drawings
Inspection method
Verification record
Verification process
Specification record
Process specification
and report
(including heat treatment
(2) There are actual measurement record reports that meet the process specifications. Verification records. Assessment results. Excellent. Unsatisfactory. Grade. Gejia. Quality. Quality. Characteristics. Symmetry. Category. 3.1 Cylinder body stiffness. 3.2 Simplified body straightness. 3.3 Simplified body diameter. .4 Weld layout and
A, B type
weld joint
misalignment amount 6
36A, B type
weld angle
bright body friction
total length of equipment
set each surface
3.10 Orientation,
size and deviation
HG/T2389-92
Table 3 Assembly
quality characteristics
comply with the requirements of the drawings and GBI51
(1) meet the requirements of level b
(2) Class A welds shall not have holes
plate thickness.
≤1/66g
128202
408502
Class B.
Conform to the drawing and the requirements of GB150
八1/80m-2《3
≤1/5g
Class A.
≤1/86-1
≤-1≤1/8%—2≤1/16≤1/85%—1 and not more than and not more than
≤0.106+1 and not more than 4
and not more than and not more than
<0.108%+1.5 and not
greater than 4.5
not less than nominal thickness% minus negative deviation of steel plate conforms to the drawing and corresponding provisions of GB151
(1) meet the requirements of Class B
(2) Surface damage should be ground and slid
(1) meet the requirements of Class B
(2) The dimensional deviation is not more than 80% of the value specified in the corresponding standard
Class B.
≤1/4g
1/16g1/88g
and not more than
and not more than
Inspection method
Special for caliper
Measuring rod
Special measuring tool
Special measuring tool
Steel tape measure
Special measuring tool
≤0.105+2and not more than
Special template
Modometer
Steel tape measure
Conform to the drawing and the provisions of GB150
Conform to the drawing and the provisions of Article 4.16.1 of GB151 Thickness gauge
Steel tape measure
Special measuring tool Inspection and evaluation results Grade Quality Characteristics Quality Category Total length of heat exchanger tube bundle 2.12 Extension length of tube bundle 3.13 Disassembly and assembly of tube bundle Deviation between main axis centerline of tube bundle after assembly and center of bundle 3.15 Quality of heat exchange tube group 3.16 Expansion connection between heat exchange tube and tube sheet 3.17 Shape of head 3.18 Actual measurement of head 3.19 Pipe fittings, flange dimensions 2389-92 Continued Table 3 Quality indicators Comply with the drawings and GB151 requirements Sharp, unobstructed (1) Meet the requirements of grade A (2) Not exceeding 80% of the allowable difference of the drawings (1) Meet the requirements of grade B (2) The surface of the heat exchange tube is not allowed to have any bumps or scratches (3) The center distance of the parallel pipe sections of the U-shaped tube should be consistent with the center distance of the tube holes of the baffle assembly (4) The U-shaped tube assembly should have a delicate appearance; bends are not allowed on the same plane Metal to metal contact
Conform to the drawing and GB151
(1) Check according to GB150 Section 10.2.2.3. The maximum thickness is not more than 1%Di
(2) The wrinkle depth is not more than 1 and there is no tear. Conform to the drawing
Conform to the drawing and GB151
Conform to the drawing and GB150 Section 10.2.2.3. Not less than the nominal thickness minus the negative deviation of the steel plate. Conform to the drawing and GB150 Section 10.2.3.7. Inspection method
Steel tape measure
Hang with chalk line
Vertical measurement
Average on both sides
Thickness gauge||tt ||Check the actual object
Special sample
Modometer
Steel tape measure
Evaluation result
Quality to be
Quality characteristics
Symmetric category
Threaded parts above M48
Drying plug
Main nut
Main sealing gasket
Main nut ball
Surface gasket
Flange seal
Surface quality
Flat cover seal
Surface quality
Fixed tube sheet
Seal picture quality
Floating head tube sheet
Seal surface quality
4:10 expansion tube sheet
Hole surface quality
Tube sheet hole bridge
Width deviation
238992
Table 4 Machining
Quality index
Conform to the requirements of drawings and relevant standards of GB150Conform to the requirements of drawings and relevant standards
(1) Meet the requirements of Class B
(2) The sealing surface has no scratches and effective
protective measures are taken
(1) Meet the requirements of Class B
(2) The sealing surface has no scratches and effective
protective measures are taken
Conform to the requirements of GB151 and have no scratches
Conform to the requirements of drawings and GB151
Note: The quality characteristics of the main sealing surface of the heat exchanger are Class A. (1) Meet the requirements of level c (2) The sealing surface has no radial damage (1) Meet the requirements of level c (2) The sealing surface has no radial damage Comply with the provisions of GB151 and have no longitudinal scratches Inspection method Special caliper Measuring tool Inspection items Mechanical properties ② Tooth shape ③ Burst groove Middle diameter | Rough surface
Special measuring tool
(1) Comply with the drawing and the requirements of GB150
(2) There is no radial
through mark on the sealing surface
(1) Comply with the drawing and the requirements of GB150
(2) There is no radial
through mark on the sealing surface
The tube sheet hole should have no through
weave or spiral
|Evaluation results
One-level
Quality characteristics
Quality characteristics
Asymmetric
Baffle outer
diameter and deviation
4.13 Tube plate hole size
and deviation
Baffle
Tube hole size
and deviation
Yao body nominal inner diameter Di
Di<400|| tt||400Di500
500≤Di≤900
900≤Di<1300
1300≤Di<1700
1700Di<2000
HG/T2389—92
Continued Table 4
Quality index
Baffle outer diameter and deflection baffle outer diameter and deviation difference
(Di-2. 5)--0. 5(Di-2. 5)
(Di-3)
(Di—4)
(Di—6. 5)
Note: (1) When DI<426 seamless steel pipe is used as the shell, the nominal diameter of the baffle is the actual inner diameter of the steel pipe minus 2
(2) When the influence of the time on the heat transfer coefficient or the average temperature is not significant, the allowable deviation of the baffle outer diameter may be twice the value in the table
Conform to the drawing and the provisions of GB151
Conform to the drawing and the provisions of GB151
(Di—4.5)
(Di-8)
(D-10)
Note: (1) When DI<426 seamless steel pipe is used as the shell, the nominal diameter of the baffle is the actual inner diameter of the steel pipe minus 2
(2) When the influence on the heat transfer is not significant, the allowable deviation of the baffle outer diameter may be twice the value in the table ... The allowable deviation of the diameter may be twice the value in the table. Inspection method
Evaluation result
Class level equipment
Quality characteristics
5.1 Strength test of spliced heat exchange pipe
Strength test
Air tightness test
5.4 Purchased safety
Accessories and main
Main accessories
5.5 Self-made safety
Accessories and main
Main accessories
Quality characteristics
Inside the equipment
Cleanliness degree
Anti-rust paint
Factory documents
Quality characteristics
Quality categories
Quality characteristics|| tt||Performance category
HG/T2389—92
Table 5 Performance test and attachments
Quality characteristic index
(1) Meet level 6
(2) Without repair
One test passed
(1) Meet level b
(2) Have the re-test certificate required by the OEM
Conform to the drawings and the provisions of GB151
(1) Meet level c
(2) Have ordering instructions
Have complete design, test data and certificate Table 6
Have complete quality certification
Paint, packaging and factory documents
Quality characteristics
Conform to the requirements of drawings and GB151, no stagnant water and residual debrisConform to the requirements of drawings and GB151, the paint surface is smooth, the color is uniform and beautiful
Conform to the requirements of drawings and GB151 and "Container Regulations"Conform to the requirements of GB150 and "Container Regulations"
Inspection methods
Verification vouchers
Verification vouchers
Verification vouchers
Inspection methods
Verification of the actual object
Verification materials
Evaluation results
One fit or not
Grade and grade
Evaluation results
Excellent One fit or not
Grade and grade7 provisions inspection methods
Steel tape measure
Hanging with chalk line
Vertical measurement
Average on both sides
Thickness gauge
Verify the actual object
Special sample
Motor gauge
Steel tape measure
Evaluation results
Quality to be
Quality characteristics
Symmetrical category||t t||Threaded parts above M48
Drying plug
Main nut
Main sealing gasket
Main nut ball
Surface washer
Flange seal
Surface quality
Flat cover seal
Surface quality
Fixed tube sheet
Seal quality
Floating head tube sheet||tt ||Sealing surface quality
4:10 expansion tube
Hole surface quality
Tube plate hole bridge
Width deviation
238992
Table 4 Machining
Quality index
Conform to the drawings and the corresponding standards of GB150Conform to the drawings and the provisions of the corresponding standards
(1) Meet the requirements of Class B
(2) The sealing surface has no scratches and effective
protective measures are taken
(1) Meet the requirements of Class B
(2) The sealing surface has no scratches and effective
protective measures are taken
Conform to the provisions of GB151 and no scratches
Conform to the drawings and the provisions of GB151
Note: The quality characteristics of the main sealing surface of the heat exchanger are Class A. (1) Meet the requirements of level c (2) The sealing surface has no radial damage (1) Meet the requirements of level c (2) The sealing surface has no radial damage Comply with the provisions of GB151 and have no longitudinal scratches Inspection method Special caliper Measuring tool Inspection items Mechanical properties ② Tooth shape ③ Burst groove Middle diameter | Rough surface
Special measuring tool
(1) Comply with the drawing and the requirements of GB150
(2) There is no radial
through mark on the sealing surface
(1) Comply with the drawing and the requirements of GB150
(2) There is no radial
through mark on the sealing surface
The tube sheet hole should have no through
weave or spiral
|Evaluation results
One-level
Quality characteristics
Quality characteristics
Asymmetric
Baffle
Diameter and deviation
4.13 Tube plate hole size
and deviation
Baffle
Tube hole size
and deviation
Yao body nominal inner diameter Di
Di<400|| tt||400Di500
500≤Di≤900
900≤Di<1300
1300≤Di<1700
1700Di<2000
HG/T2389—92
Continued Table 4
Quality index
Baffle outer diameter and deflection baffle outer diameter and deviation difference
(Di-2. 5)--0. 5(Di-2. 5)
(Di-3)
(Di—4)
(Di—6. 5)
Note: (1) When DI<426 seamless steel pipe is used as the shell, the nominal diameter of the baffle is the actual inner diameter of the steel pipe minus 2
(2) When the influence of the time on the heat transfer coefficient or the average temperature is not significant, the allowable deviation of the baffle outer diameter may be twice the value in the table
Conform to the drawing and the provisions of GB151
Conform to the drawing and the provisions of GB151
(Di—4.5)
(Di-8)
(D-10)
Note: (1) When DI<426 seamless steel pipe is used as the shell, the nominal diameter of the baffle is the actual inner diameter of the steel pipe minus 2
(2) When the influence on the heat transfer is not significant, the allowable deviation of the baffle outer diameter may be twice the value in the table ... The allowable deviation of the diameter may be twice the value in the table. Inspection method
Evaluation result
Class level equipment
Quality characteristics
5.1 Strength test of spliced heat exchange pipe
Strength test
Air tightness test
5.4 Purchased safety
Accessories and main
Main accessories
5.5 Self-made safety
Accessories and main
Main accessories
Quality characteristics
Inside the equipment
Cleanliness degree
Anti-rust paint
Factory documents
Quality characteristics
Quality categories
Quality characteristics|| tt||Performance category
HG/T2389—92
Table 5 Performance test and attachments
Quality characteristic index
(1) Meet level 6
(2) Without repair
One test passed
(1) Meet level b
(2) Have the re-test certificate required by the OEM
Conform to the drawings and the provisions of GB151
(1) Meet level c
(2) Have ordering instructions
Have complete design, test data and certificate Table 6
Have complete quality certification
Paint, packaging and factory documents
Quality characteristics
Conform to the requirements of drawings and GB151, no stagnant water and residual debrisConform to the requirements of drawings and GB151, the paint surface is smooth, the color is uniform and beautiful
Conform to the requirements of drawings and GB151 and "Container Regulations"Conform to the requirements of GB150 and "Container Regulations"
Inspection methods
Verification vouchers
Verification vouchers
Verification vouchers
Inspection methods
Verification of the actual object
Verification materials
Evaluation results
One fit or not
Grade and grade
Evaluation results
Excellent One fit or not
Grade and grade7 provisions inspection methods
Steel tape measure
Hanging with chalk line
Vertical measurement
Average on both sides
Thickness gauge
Verify the actual object
Special sample
Motor gauge
Steel tape measure
Evaluation results
Quality to be
Quality characteristics
Symmetric category||t t||Threaded parts above M48
Drying plug
Main nut
Main sealing gasket
Main nut ball
Surface washer
Flange seal
Surface quality
Flat cover seal
Surface quality
Fixed tube sheet
Seal quality
Floating head tube sheet||tt ||Sealing surface quality
4:10 expansion tube
Hole surface quality
Tube plate hole bridge
Width deviation
238992
Table 4 Machining
Quality index
Conform to the drawings and the corresponding standards of GB150Conform to the drawings and the provisions of the corresponding standards
(1) Meet the requirements of Class B
(2) The sealing surface has no scratches and effective
protective measures are taken
(1) Meet the requirements of Class B
(2) The sealing surface has no scratches and effective
protective measures are taken
Conform to the provisions of GB151 and no scratches
Conform to the drawings and the provisions of GB151
Note: The quality characteristics of the main sealing surface of the heat exchanger are Class A. (1) Meet the requirements of level c (2) The sealing surface has no radial damage (1) Meet the requirements of level c (2) The sealing surface has no radial damage Comply with the provisions of GB151 and have no longitudinal scratches Inspection method Special caliper Measuring tool Inspection items Mechanical properties ② Tooth shape ③ Burst groove Middle diameter | Rough surface
Special measuring tool
(1) Comply with the drawing and the requirements of GB150
(2) There is no radial
through mark on the sealing surface
(1) Comply with the drawing and the requirements of GB150
(2) There is no radial
through mark on the sealing surface
The tube sheet hole should have no through
weave or spiral
|Evaluation results
One-level
Quality characteristics
Quality characteristics
Asymmetric
Baffle
Diameter and deviation
4.13 Tube plate hole size
and deviation
Baffle
Tube hole size
and deviation
Yao body nominal inner diameter Di
Di<400|| tt||400Di500
500≤Di≤900
900≤Di<1300
1300≤Di<1700
1700Di<2000
HG/T2389—92
Continued Table 4
Quality index
Baffle outer diameter and deflection baffle outer diameter and deviation difference
(Di-2. 5)--0. 5(Di-2. 5)
(Di-3)
(Di—4)
(Di—6. 5)
Note: (1) When DI<426 seamless steel pipe is used as the shell, the nominal diameter of the baffle is the actual inner diameter of the steel pipe minus 2
(2) When the influence of the time on the heat transfer coefficient or the average temperature is not significant, the allowable deviation of the baffle outer diameter may be twice the value in the table
Conform to the drawing and the provisions of GB151
Conform to the drawing and the provisions of GB151
(Di—4.5)
(Di-8)
(D-10)
Note: (1) When DI<426 seamless steel pipe is used as the shell, the nominal diameter of the baffle is the actual inner diameter of the steel pipe minus 2
(2) When the influence on the heat transfer is not significant, the allowable deviation of the baffle outer diameter may be twice the value in the table ... The allowable deviation of the diameter may be twice the value in the table. Inspection method
Evaluation result
Class level equipment
Quality characteristics
5.1 Strength test of spliced heat exchange pipe
Strength test
Air tightness test
5.4 Purchased safety
Accessories and main
Main accessories
5.5 Self-made safety
Accessories and main
Main accessories
Quality characteristics
Inside the equipment
Cleanliness degree
Anti-rust paint
Factory documents
Quality characteristics
Quality categories
Quality characteristics|| tt||Performance category
HG/T2389—92
Table 5 Performance test and attachments
Quality characteristic index
(1) Meet level 6
(2) Without repair
One test passed
(1) Meet level b
(2) Have the re-test certificate required by the OEM
Conform to the drawings and the provisions of GB151
(1) Meet level c
(2) Have ordering instructions
Have complete design, test data and certificate Table 6
Have complete quality certification
Paint, packaging and factory documents
Quality characteristics
Conform to the requirements of drawings and GB151, no stagnant water and residual debrisConform to the requirements of drawings and GB151, the paint surface is smooth, the color is uniform and beautiful
Conform to the requirements of drawings and GB151 and "Container Regulations"Conform to the requirements of GB150 and "Container Regulations"
Inspection methods
Verification vouchers
Verification vouchers
Verification vouchers
Inspection methods
Verification of the actual object
Verification materials
Evaluation results
One fit or not
Grade and grade
Evaluation results
Excellent One fit or not
Grade and grade10 Expanded tube plate
Hole surface quality
Tube plate hole bridge
Width deviation
238992
Table 4 Machining
Quality index
Conform to the requirements of the drawings and the corresponding standards of GB150Conform to the requirements of the drawings and the corresponding standards
(1) Meet the requirements of Class B
(2) The sealing surface has no scratches and effective
protective measures are taken
(1) Meet the requirements of Class B
(2) The sealing surface has no scratches and effective
protective measures are taken
Conform to the requirements of GB151 and have no scratches
Conform to the requirements of the drawings and GB151
Note: The quality characteristics of the main sealing surface of the heat exchanger are Class A. (1) Meet the requirements of level c (2) The sealing surface has no radial damage (1) Meet the requirements of level c (2) The sealing surface has no radial damage Comply with the provisions of GB151 and have no longitudinal scratches Inspection method Special caliper Measuring tool Inspection items Mechanical properties ② Tooth shape ③ Burst groove Middle diameter | Rough surface
Special measuring tool
(1) Comply with the drawing and the requirements of GB150
(2) There is no radial
through mark on the sealing surface
(1) Comply with the drawing and the requirements of GB150
(2) There is no radial
through mark on the sealing surface
The tube sheet hole should have no through
weave or spiral
|Evaluation results
One-level
Quality characteristics
Quality characteristics
Asymmetric
Baffle outer
diameter and deviation
4.13 Tube plate hole size
and deviation
Baffle
Tube hole size
and deviation
Yao body nominal inner diameter Di
Di<400|| tt||400Di500
500≤Di≤900
900≤Di<1300
1300≤Di<1700
1700Di<2000
HG/T2389—92
Continued Table 4
Quality index
Baffle outer diameter and deflection baffle outer diameter and deviation difference
(Di-2. 5)--0. 5(Di-2. 5)
(Di-3)
(Di—4)
(Di—6. 5)
Note: (1) When DI<426 seamless steel pipe is used as the shell, the nominal diameter of the baffle is the actual inner diameter of the steel pipe minus 2
(2) When the influence of the time on the heat transfer coefficient or the average temperature is not significant, the allowable deviation of the baffle outer diameter may be twice the value in the table
Conform to the drawing and the provisions of GB151
Conform to the drawing and the provisions of GB151
(Di—4.5)
(Di-8)
(D-10)
Note: (1) When DI<426 seamless steel pipe is used as the shell, the nominal diameter of the baffle is the actual inner diameter of the steel pipe minus 2
(2) When the influence on the heat transfer is not significant, the allowable deviation of the baffle outer diameter may be twice the value in the table ... The allowable deviation of the diameter may be twice the value in the table. Inspection method
Evaluation result
Class level equipment
Quality characteristics
5.1 Strength test of spliced heat exchange pipe
Strength test
Air tightness test
5.4 Purchased safety
Accessories and main
Main accessories
5.5 Self-made safety
Accessories and main
Main accessories
Quality characteristics
Inside the equipment
Cleanliness degree
Anti-rust paint
Factory documents
Quality characteristics
Quality categories
Quality characteristics|| tt||Performance category
HG/T2389—92
Table 5 Performance test and attachments
Quality characteristic index
(1) Meet level 6
(2) Without repair
One test passed
(1) Meet level b
(2) Have the re-test certificate required by the OEM
Conform to the drawings and the provisions of GB151
(1) Meet level c
(2) Have ordering instructions
Have complete design, test data and certificate Table 6
Have complete quality certification
Paint, packaging and factory documents
Quality characteristics
Conform to the requirements of drawings and GB151, no stagnant water and residual debrisConform to the requirements of drawings and GB151, the paint surface is smooth, the color is uniform and beautiful
Conform to the requirements of drawings and GB151 and "Container Regulations"Conform to the requirements of GB150 and "Container Regulations"
Inspection method
Verification certificate
Verification certificate
Verification certificate
Inspection method
Verification of the actual object
Verification data
Evaluation result
One fit or not
Grade and grade
Evaluation result
Excellent One fit or not
Grade and grade10 Expanded tube plate
Hole surface quality
Tube plate hole bridge
Width deviation
238992
Table 4 Machining
Quality index
Conform to the requirements of the drawings and the corresponding standards of GB150Conform to the requirements of the drawings and the corresponding standards
(1) Meet the requirements of Class B
(2) The sealing surface has no scratches and effective
protective measures are taken
(1) Meet the requirements of Class B
(2) The sealing surface has no scratches and effective
protective measures are taken
Conform to the requirements of GB151 and have no scratches
Conform to the requirements of the drawings and GB151
Note: The quality characteristics of the main sealing surface of the heat exchanger are Class A. (1) Meet the requirements of level c (2) The sealing surface has no radial damage (1) Meet the requirements of level c (2) The sealing surface has no radial damage Comply with the provisions of GB151 and have no longitudinal scratches Inspection method Special caliper Measuring tool Inspection items Mechanical properties ② Tooth shape ③ Burst groove Middle diameter | Rough surface
Special measuring tool
(1) Comply with the drawing and the requirements of GB150
(2) There is no radial
through mark on the sealing surface
(1) Comply with the drawing and the requirements of GB150
(2) There is no radial
through mark on the sealing surface
The tube sheet hole should have no through
weave or spiral
|Evaluation results
One-level
Quality characteristics
Quality characteristics
Asymmetric
Baffle outer
diameter and deviation
4.13 Tube plate hole size
and deviation
Baffle
Tube hole size
and deviation
Yao body nominal inner diameter Di
Di<400|| tt||400Di500
500≤Di≤900
900≤Di<1300
1300≤Di<1700
1700Di<2000
HG/T2389—92
Continued Table 4
Quality index
Baffle outer diameter and deflection baffle outer diameter and deviation difference
(Di-2. 5)--0. 5(Di-2. 5)
(Di-3)
(Di—4)
(Di—6. 5)
Note: (1) When DI<426 seamless steel pipe is used as the shell, the nominal diameter of the baffle is the actual inner diameter of the steel pipe minus 2
(2) When the influence of the time on the heat transfer coefficient or the average temperature is not significant, the allowable deviation of the baffle outer diameter may be twice the value in the table
Conform to the drawing and the provisions of GB151
Conform to the drawing and the provisions of GB151
(Di—4.5)
(Di-8)
(D-10)
Note: (1) When DI<426 seamless steel pipe is used as the shell, the nominal diameter of the baffle is the actual inner diameter of the steel pipe minus 2
(2) When the influence on the heat transfer is not significant, the allowable deviation of the baffle outer diameter may be twice the value in the table ... The allowable deviation of the diameter may be twice the value in the table. Inspection method
Evaluation result
Class level equipment
Quality characteristics
5.1 Strength test of spliced heat exchange pipe
Strength test
Air tightness test
5.4 Purchased safety
Accessories and main
Main accessories
5.5 Self-made safety
Accessories and main
Main accessories
Quality characteristics
Inside the equipment
Cleanliness degree
Anti-rust paint
Factory documents
Quality characteristics
Quality categories
Quality characteristics|| tt||Performance category
HG/T2389—92
Table 5 Performance test and attachments
Quality characteristic index
(1) Meet level 6
(2) Without repair
One test passed
(1) Meet level b
(2) Have the re-test certificate required by the OEM
Conform to the drawings and the provisions of GB151
(1) Meet level c
(2) Have ordering instructions
Have complete design, test data and certificate Table 6
Have complete quality certification
Paint, packaging and factory documents
Quality characteristics
Conform to the requirements of drawings and GB151, no stagnant water and residual debrisConform to the requirements of drawings and GB151, the paint surface is smooth, the color is uniform and beautiful
Conform to the requirements of drawings and GB151 and "Container Regulations"Conform to the requirements of GB150 and "Container Regulations"
Inspection methods
Verification vouchers
Verification vouchers
Verification vouchers
Inspection methods
Verification of the actual object
Verification materials
Evaluation results
One fit or not
Grade and grade
Evaluation results
Excellent One fit or not
Grade and grade5 Self-made safety
Accessories and main
Parts
Quality characteristics
Inside the equipment
Cleanliness
Anti-rust paint
Factory documents
Quality characteristics
Quality characteristics
Classification
HG/T2389—92
Table 5 Performance test and accessories| |tt||Quality characteristic index
(1) To reach level 6
(2) Without repair
One test passed
(1) To reach level b
(2) With the re-test certificate required by the OEM
Conform to the drawings and the provisions of GB151
(1) To reach level c
(2) With ordering instructions
Have complete design, test data and certificate table 6
Have complete quality
paint, packaging and factory documents of the manufacturer
Quality characteristics
Conform to the requirements of the drawings and GB151, no water accumulation and residual debrisConform to the requirements of the drawings and GB151, the paint surface is smooth, the color is uniform and beautiful
Conform to the requirements of the drawings and GB151 and "Container Regulations"Conform to the requirements of GB150 and "Container Regulations"
Inspection method
Verification certificate
Verification certificate
Verification certificate
Inspection method
Verification of the actual object
Verification data
Evaluation result
One is suitable or not
Grade and grade
Evaluation result
Excellent or not
Grade and grade5 Self-made safety
Accessories and main
Parts
Quality characteristics
Inside the equipment
Cleanliness
Anti-rust paint
Factory documentswww.bzxz.net
Quality characteristics
Classification
Quality characteristics
Classification
HG/T2389—92
Table 5 Performance test and accessories| |tt||Quality characteristic index
(1) To reach level 6
(2) Without repair, one test is qualified
(1) To reach level b
(2) With the re-test certificate required by the OEM
Conform to the drawings and the provisions of GB151
(1) To reach level c
(2) With ordering instructions
Have complete design, test data and certificate table 6
Have complete quality
paint, packaging and factory documents of the manufacturer
Quality characteristics
Conform to the requirements of the drawings and GB151, no water accumulation and residual debrisConform to the requirements of the drawings and GB151, the paint surface is smooth, the color is uniform and beautiful
Conform to the requirements of the drawings and GB151 and "Container Regulations"Conform to the requirements of GB150 and "Container Regulations"
Inspection method
Verification certificate
Verification certificate
Verification certificate
Inspection method
Verification of the actual object
Verification data
Evaluation result
One is suitable or not
Grade and grade
Evaluation result
Excellent or not
Grade and grade
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