GB/T 18704 TORICH Round Stainless Steel Clad Pipes For Structural Purposes
GB/T 18704 TORICH stainless steel clad pipes for structural purposes
Size Range:
OD:12.7-325mm
WT:0.8-12mm
Length: 1000mm-8000mm
Characteristic:
Good OD and ID tolerance controlled to Technical Standard
Stable quality
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 | |
What is your Guarantee?
1.SO9001:2008 and TS16949 certification, SGS, BV, TUV or other third party inspection is available.
2.High quality with competitive price.
3.Advanced technology, experienced engineer, ISO quality system for quality assurance and traceability.
Do you have agent or distributor in our country?
1.We are recruiting area agent and distributor all over the world, welcome to send us your mail or call us for detail discussion.
How is your production capability?
1.2000 tons monthly production capacity, 5000 tons monthly trading capability
GB/T 18704 TORICH stainless steel clad pipes for structural purposes
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