GB/T12771 Polished Liquid Delivery Welded Stainless Steel Pipes 12Cr18Ni9
Application:
Corrosion resistant stainless steel welded steel pipe for liquid delivery.
Size:
OD:50-1000mm
WT:0.25-50mm
Length:3-9m
Production Method of Steel:
Electric arc furnace and refining outside the furnace
Delivery State:
Hot treatment and pickling.
Surface Quality:
Inside and outside surface is smooth.There is no delamination,crack,folding,double skin,twisted,pickling,residual scale or other defects.
Test Item:
Chemical Component
Tensile Test
Hydraulic Test
Eddy current Test
Flattening Test
Weld Transverse Bending Test
Intergranular Corrosion Test
Radiographic Inspection
Flanging Test
Austenitic Grain Size
Impact Test of Weld Joint
Tolerance of OD
| Classification | D | Permissible Tolerance |
| A | B |
| H | All Dimensions | ±0.5% or ±0.20 | ±0.75% or ±0.30 |
| T | <40 | ±0.20 | ±0.30 |
| ≥40~<65 | ±0.30 | ±0.40 |
| ≥65~<90 | ±0.40 | ±0.50 |
| ≥90~<168.3 | ±0.80 | ±1.00 |
| ≥168.3~<325 | ±0.75%D | ±1%D |
| ≥325~<610 | ±0.6%D | ±1%D |
| ≥610 | ±0.6%D | ±0.7%D or ±10 |
| WC SP | <40 | ±0.15 | ±0.20 |
| ≥40~<60 | ±0.20 | ±0.30 |
| ≥60~<100 | ±0.30 | ±0.40 |
| ≥100~<200 | ±0.4%D | ±0.5%D |
| ≥200 | ±0.5%D | ±0.75%D |
Mechanical properties of steel tubes
| Number | New Brand | Ola Brand | non-proportional extension strength MPa | tensile strength MPa | elongation after fracture A/ % |
| Heat treatment condition | Non-heat treatment condition |
| Not less than |
| 1 | 12Cr18Ni9 | 1Cr18Ni9 | 210 | 520 | 32 | 25 |
| 2 | 06Cr19Ni10 | 0Cr18Ni9 | 210 | 520 |
| 3 | 022Cr19Ni10 | 00Cr19Ni10 | 180 | 480 |
| 4 | 06Cr25Ni20 | 0Cr25Ni20 | 210 | 520 |
| 5 | 06Cr17Ni12Mo2 | 0Cr17Ni12Mo2 | 210 | 520 |
| 6 | 022Cr17Ni12Mo2 | 00Cr17Ni14Mo2 | 180 | 480 |
| 7 | 06Cr18Ni11Ti | 0Cr18Ni10Ti | 210 | 520 |
| 8 | 06Cr18Ni11Nb | 0Cr18Ni11Nb | 210 | 520 |
| 9 | 022Cr18Ti | 00Cr17 | 180 | 360 | 20 | -- |
| 10 | 019Cr19Mo2NbTi | 00Cr18Mo2 | 240 | 410 |
| 11 | 06Cr13Al | 0Cr13Al | 177 | 410 |
| 12 | 022Cr11Ti | -- | 275 | 400 | 18 | -- |
| 13 | 022Cr12Ni | -- | 275 | 400 | 18 | -- |
| 14 | 06Cr13 | 0Cr13 | 21 | 410 | 20 | -- |
Product Tags:
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GB/T12771 Polished Liquid Delivery Welded Stainless Steel Pipes 12Cr18Ni9 Images
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