This standard applies to stainless acid-resistant steel spun or cold-rolled (drawn) ultra-thin-wall seamless steel pipes. GB 3089-1982 Stainless acid-resistant steel plate thin-wall seamless steel pipe GB3089-1982 Standard download decompression password: www.bzxz.net

National Standard of the People's Republic of China
GB3089-1982
Stainless acid-resistant steel ultra-thin wall seamless steel pipe
1982-05-10Approved
General Administration of Standards
1983-03-01
Page 1
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"Galvanized welded steel pipe for low-pressure fluid transportation" Material Code
3091-1993
1 Dimensions, shape and weight
2 Technical requirements
3 Test methods
4 Inspection rules
5 Packaging,||t t||Mark and quality certificate
Page 2
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《Galvanized welded steel pipe for low-pressure fluid transportation》
This standard applies to stainless acid-resistant steel spinning or cold-rolled (drawing) ultra-thin wall seamless steel pipe area
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《Steel pipe for low-pressure fluid transportation》
3091-19
Page 3
1.1 Diameter and wall thickness
1 Size, shape and weight
The outer diameter and wall thickness of the steel pipe shall comply with the provisions of Table 1. According to the requirements of the purchaser, by agreement between the two parties, steel pipes of other sizes other than those specified in Table 1 can be supplied. Table 1
10.3×0.15
24.4X0.20
40.6×0.30
53.2×0.60
61.0×0.35
70.2X0 .60
83.0X0.50
90.7X0.30
110.9×0.45
1.2 Inner diameter allowable deviation
12.4×0.20
26.4X 0.20
41.0×0.50
55.0×0.50
61.0×0.50
74.0X0.50
89.6X0.30
90.8× 0.40
125.7X0.35
Outer diameter×wall thickness
15.4×0.20
32.4×0.20
41.2×0.60
59.6×0.3 0
61.2×0.60
75.5X0.25
89.8X0.40
95.6×0.30
150.8×0.40
18.4X0. 20
35.0X0.50
48.0×0.25
60.0×0.25
67.6X0.30
75.6X0.30
90.2X0. 40
101×0.50
250.8×0.40
20.4X0.20
40.4×0.20
50.5×0.25
60.0×0.50
67.8×0.40
82.8X0.40
90.5X0.25
102.6X0.30
The inner diameter of the steel pipe is generally not checked and is guaranteed by the core rod diameter. The allowable deviation of the core rod diameter shall comply with the provisions of Table 2.
1.3 Allowable deviation of wall thickness
The allowable deviation of the wall thickness of the steel pipe shall comply with the provisions of Table 3. Table 3
Ordinary grade
Page 4
"Galvanized welded steel pipe for low-pressure fluid transportation"
3091-1993
Steel pipe size
1.4 Length
1.4.1 Normal length
The normal length of the steel pipe is 0.5 to 6m.
1.4.2 Fixed length
Ordinary grade
Allowable deviation of wall thickness
The fixed length of steel pipe should be within the normal length range, and the allowable deviation of its length is 1.4.3 Multiple length
Page 5
"Galvanized welded steel pipe for low pressure fluid transportation" Building
3091-1993
The multiple length of steel pipe should be within the normal length range, and a 5mm cut margin should be left for each multiple length. The allowable deviation of the total length is 0mm.
1.5 Curvature
The curvature of the steel pipe per meter should not exceed 5mm. WW
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1.6 Appearance
The appearance of the steel pipe is not allowed to be twisted
1.7 Delivery weight
The steel pipe is delivered by actual weight.
1.8 Marking example
The ultra-thin wall steel pipe made of 1Cr18Ni9Ti steel with an outer diameter of 60mm and a wall thickness of 0.25mm is marked as: Ultra-thin pipe 1Cr18Ni9Ti-60X0.25—GB3089-82 "Low
3091-19
Page 6
2.1 Grade and chemical composition
2 Technical requirements
The grade and chemical composition of steel used for steel pipes shall comply with the provisions of Table 4. Table 4
Chemical composition, %
≤0.30≤0.035
8.00~12.00
8.00~11.00
12.00~16.00
11.00~14.00
11.00~14.00
Note: According to the requirements of the purchaser, steel pipes with grades other than those specified in Table 4 can be produced by agreement between the two parties. 2.2 The allowable deviation of the chemical composition of the finished steel pipe shall comply with the provisions of Table 5. Table 5
5(c%-0
5(c%-0
5(c%-0
.02)~
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Welded Steel Pipe for Low-Pressure Fluid Transportation
3091-1993
Element Name
Applicable Range%
>0.03~0.20
2.3 Smelting Method
Allowable Deviation%
Element Name
Applicable Range%
>10. 00~20. 00
>7.50~20.00
Allowable deviation%
Steel shall be smelted in electric furnace or electric slag furnace. Other smelting methods that meet the requirements of this standard may also be adopted by agreement between the two parties. 2.4 Delivery status
Steel pipes are delivered in heat-treated state. If the purchaser requires delivery without heat treatment, the bending degree, mechanical properties and intergranular corrosion test of the steel pipe shall not be inspected.
2.5 Mechanical properties
The mechanical properties of the steel pipe shall comply with the provisions of Table 6. Serial number
00Cr18Ni1 0
1Cr18Ni9Ti
00Cr17Ni14Mo2Ti
1Cr18Ni12Mo2Ti
1Cr18Ni12Mo3Ti
2.6 Chemical properties
Tensile strength
o.kgf/mm2（MPa）
Not less than
45（441)
56（549）
49（481）
55（539）||tt ||55 (539)
Elongation
Steel pipes shall be tested for intergranular corrosion tendency according to the T method, and the test results shall not show intergranular corrosion tendency. 2.7 Surface quality
The inner and outer surfaces of the steel pipe shall be smooth, and the smoothness shall not be less than 6. The inner and outer surfaces of the steel pipe shall not have cracks, folds, scaly thorns, spots, metal tumors, pitting and mesh corrosion caused by pickling, abrasions with a depth exceeding the negative deviation of the wall thickness, Page 8
Galvanized welded steel pipes for high-pressure fluid transportation》
3091-1993
Pit and indentation. Slight spiral corrugation, silk marks and undamaged concave surface as well as scratches and punctures with a depth not exceeding 0.015mm are allowed.
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Connecting steel pipes》
《Low-pressure
Fluid vehicle
Transportation
3091-19
Page 9
3 Test method
3.1 The size of the steel pipe shall be measured one by one with a caliper or micrometer. 3.2 The inner and outer surfaces of the steel pipe shall be inspected one by one with the naked eye3.3 The chemical and mechanical test methods for steel pipes shall comply with the provisions of 7. Table 7
Number of samples taken in each batch, pieces
Chemical analysis
Tensile test
Intergranular corrosion
2 (taken on different steel pipes)
2 (taken on different steel pipes)
Test method
GB222—63
GB223—63, 81
YB35—78
GB228—76
GB1223—75
Page 10
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"Galvanized welded steel pipe for low-pressure fluid transportation" Material code
3091-1993
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Steel pipes are inspected and accepted in batches. Each batch shall consist of steel pipes of the same grade, furnace (tank) number, specification and heat treatment system. 4 Inspection rules
The re-inspection and judgment rules of steel pipes shall comply with the provisions of GB2102-80 "Steel Pipe Acceptance, Packaging, Marking and Quality Certificate Inspection and acceptance of steel pipes shall be carried out by the supplier's technical supervision department. The sampling quantity of the tensile test and intergranular corrosion test of steel pipes shall comply with the provisions of Table 7. 4.1 Inspection and acceptance
4.2 Batching rules
4.3 Sampling quantity
4.4 Re-inspection and judgment rules
General provisions".
Galvanized
Welded
Steel Pipes for Fluid Transportation》
3091-1993
Page 11
5 Packaging, Marking and Quality Certificate
5.1 Steel pipes should be packed one by one or bundled into small bundles before packing. The packaging box should be lined with moisture-proof wax paper and filled with foam or soft items. There should be labels inside and outside the packaging box, indicating: supplier name, brand, specification, quantity, furnace (tank) number and w.sinoaec.
batch number, packaging date.
5.2 Steel pipes should be accompanied by a quality certificate. Indicate: supplier name, contract number, brand, furnace (tank) number and batch number, specifications and quantity, various test results, standard number, galvanized welded steel pipe for fluid transportation, low pressure 3091-1993, page 12
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