GB/T 18704 Stainless 12Cr17Mn6Ni5N Steel Clad Pipe
GB/T 18704 Stainless 12Cr17Mn6Ni5N Steel Clad Pipe
GB/T 18704 Stainless 12Cr17Mn6Ni5N Steel Clad Pipe
GB/T 18704 Stainless 12Cr17Mn6Ni5N Steel Clad Pipe
GB/T 18704 Stainless 12Cr17Mn6Ni5N Steel Clad Pipe
GB/T 18704 Stainless 12Cr17Mn6Ni5N Steel Clad Pipe
GB/T 18704 Stainless 12Cr17Mn6Ni5N Steel Clad Pipe

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GB/T 18704 Stainless 12Cr17Mn6Ni5N Steel Clad Pipe

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Model No. : GB/T 18704
Brand Name : TORICH
Type : Stainless Steel Pipe
Certification : UL
Application : Structure Pipe
Section Shape : Round
Surface Treatment : Polished
Usage : Construction Structure
Technique : ERW
Material : 12Cr17Mn6Ni5N 12Cr18Mn9Ni5N 12Cr18Ni9
Surface : Polished
Shape : Round Shape
Product Name : GB/T 18704 Stainless 12Cr17Mn6Ni5N Steel Clad Pipe
Keyword : Stainless 12Cr17Mn6Ni5N Steel Clad Pipe
OD : 12.7-219mm
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9yrs

Ningbo, Zhejiang, China

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Product description

GB/T 18704 Stainless 12Cr17Mn6Ni5N Steel Clad Pipe 

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

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                                              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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