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GB/T 12771 Liquid Delivery Welded Stainless Steel Pipes
| Model No. : | GB/T 12771 |
|---|---|
| Brand Name : | TORICH |
Ningbo, Zhejiang, China
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Product description
GB/T 12771 Liquid Delivery Welded Stainless Steel Pipes
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 |
210 |
410 |
20 |
-- |
China Stainless Steel Tube manufacturers, our Stainless Steel Exhaust Tube, Welded Steel Tube, Round Stainless Steel Pipe, Polish Stainless Steel Tube, Stainless Coiled Tube, Duplex Stainless Steel Tube are good in quality and competitive in price.
Ningbo, Zhejiang, China
- Distributor/Wholesaler
- Manufacturer
- Service
- Trade Company
- OEM service
- Gold Supplier
- Platform Certification
- Online Expo
- Video
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