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Brand Name : TORICH
Model Number : GB/T 18704
Certification : ISO 9001 ISO 14001 TS 16949 EN 10204.3.1 LR KR
Place of Origin : China
MOQ : 0.5 ton
Price : negotiable
Payment Terms : L/C, D/A, D/P, T/T, Western Union, MoneyGram
Supply Ability : 60000 tons per year
Delivery Time : 34-45 days
Packaging Details : In bundles in wooden box
Product name : GB/T 18704 Stainless Steel pipe Clad Steel Pipe 302 304 12Cr17Mn6Ni5N
Keyword : Stainless Steel pipe Clad Steel Pipe
Type : Stainless Steel pipe
surface : polished
Material : 12Cr17Mn6Ni5N 12Cr18Mn9Ni5N 12Cr18Ni9
OD : 12.7-219mm
Shape : Round Shape
Usage : Construction Structure
Length : 2-12m
WT : 0.6-8mm
GB/T 18704 Stainless Steel pipe Clad Steel Pipe 302 304 12Cr17Mn6Ni5N
Application:Municipal facilities, vehicle and boat manufacturing, road and bridge guardrails, architectural decoration, steel structure grids, medical equipment, furniture, general mechanical components
size:L--2-12mm WT--0.6-8mm OD:12.7-219mm
delivery state:surface unburnished---SNB
surface burnished---SB
surface polished--SP
surface sandblasting--SA
Surface Quality:The internal and external surfaces of the steel tube are not allowed to have cracks, scabs, folds, delaminations, laps, and burns. Allows for scribes, scratches, misalignment of welds, burns, oxide scales, and external burr removal traces that are not more than a negative wall thickness deviation
Tolerance of OD
Surface delivery condition | Nominal outside diameter | Tolerance |
Polishing,Polish (SB,SP) | ≤25 | ±0.25 |
>25~40 | ±0.30 | |
>40~50 | ±0.35 | |
>50~60 | ±0.40 | |
>60~70 | ±0.50 | |
>70~80 | ±0.60 | |
>80 | ±1%D | |
Unpolished,Sand blasting(SNB,SS) | ≤25 | ±0.30 |
>25~50 | ±0.40 | |
>50 | ±1.0%D |
Tolerance of WT
Wall thickness(S) | Tolerance(high-grade) | Tolerance(medium grade) |
≥0.8~2.0 | ±0.10 | ±0.20 |
>2.0~3.0 | ±0.15 | ±0.30 |
>3.0 | ±5%S | ±10%S |
Chemical composition
No. | Unified digital code | New steel grade | Old steel grade | Chemical composition | |||||||
C | Si | Mn | P | S | Ni | Cr | N | ||||
1 | S35350 | 12Cr17Mn6Ni5N | 1Cr17Mn6Ni5N | ≤0.15 | ≤1.00 | 5.50~7.50 | ≤0.050 | ≤0.030 | 3.50~5.50 | 16.00~18.00 | 0.05~0.25 |
2 | S35450 | 12Cr18Mn9Ni5N | 1Cr18Mn8Ni5N | ≤0.15 | ≤1.00 | 7.50~10.0 | ≤0.050 | ≤0.030 | 4.00~6.00 | 17.00~19.00 | 0.05~0.25 |
3 | S30210 | 12Cr18Ni9 | 1Cr18Ni9 | ≤0.15 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.030 | 8.00~10.00 | 17.00~19.00 | ≤0.10 |
4 | S30408 | 06Cr19Ni10 | 0Cr18Ni9 | ≤0.08 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.030 | 8.00~11.00 | 18.00~20.00 | - |
Mechanical property
No. | Unified digital code | New steel grade | Old steel grade | Yield strength Rp0.2/MPa | Tensile Strength Rm/MPa | Elongation A/ % |
≥ | ||||||
1 | S35350 | 12Cr17MnNi5N | 1Cr17Mn6Ni5N | 245 | 520 | 25 |
2 | S35450 | 12Cr18Mn9Ni5N | 1Cr18Mn8Ni5N | 245 | 520 | |
3 | S30210 | 12Cr18Ni9 | 1Cr18Ni9 | 210 | 520 | 30 |
4 | S30408 | 06Cr19Ni10 | 0Cr18Ni9 | 210 | 520 |
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GB/T 18704 Stainless Steel pipe Clad Steel Pipe Stainless Steel Tube 302 304 12Cr17Mn6Ni5N Images |