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Certification:TS 16949
OD 35mm 40mm Cold Drawing Seamless Steel Tube , Small Diameter Bao Steel Pipe
Description:
Standard:BS6323/4 Size:OD:6-60mm,WT:0.5-6mm Material:CFS3,CFS4,CFS5,CFS8 Delivery State:NBK/GBK/BKW/BKS/BK Raw material:Bao Steel,Huai Steel,XingCheng Steel with good quality. Length:5.8m,6m. Package:Bundles or wooden cases. Surface Anti-rust:Both outside and internal tube surface flushing with anti-rust oil. Surface quality:very smooth and bright without oxide scale,pock,strach,crack and other defects.. Surface Cleaness:clean without iron scrap,dust. High working pressure,better extending rate and strength property. Raw material: Precision tubes are made from carbon steel from quality Bao Steel,XingCheng Steel,and HuaiSteel.Tolerance Table Of Cold Drawing Seamless Steel Tube
|
NAME |
SCOPE(mm) |
GB (mm) |
BS (mm) |
Enterprise control(mm) |
Special high-precision(mm) |
|
Out Diameter |
4-30 |
±0.1 |
±0.1 |
±0.05 |
±0.03 |
|
31-40 |
±0.15 |
±0.15 |
±0.05 |
±0.03 |
|
|
41-50 |
±0.20 |
±0.15 |
±0.08 |
±0.03 |
|
|
51-60 |
±0.25 |
±0.20 |
±0.08 |
±0.03 |
|
|
Wall thickness |
0.5-7 |
±10%,Min±0.12 |
±10% |
±10%,Min±0.05 |
±10%,Min±0.03 |
Steel grades and chemical composition for Cold Drawing Seamless Steel Tube
|
Chemical composition(cast analysis)a |
|||||
|
Steel grade |
% by mass |
||||
|
C |
Si |
Mn |
P |
Sb |
|
|
max. |
max. |
max. |
max. |
max. |
|
|
CFS3 |
0.20 |
0.35 |
0.90 |
0.05 |
0.05 |
|
CFS4 |
0.25 |
0.35 |
1.20 |
0.05 |
0.05 |
|
CFS5 |
0.23 |
0.50 |
1.50 |
0.05 |
0.05 |
|
CFS8 |
0.40-0.55 |
0.35 |
0.5-0.9 |
0.05 |
0.05 |
Mechanical prorperties for Cold Drawing Seamless Steel Tube
|
Mechanical properties at room temperature |
|
|
Steel grade |
Minimum values for the delivery condition |
|
BK |
BKW |
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