Cold Drawn Seamless Pipe , JISG3445 STKM11A STKM13A Round Steel Pipe
Certification:ISO9000,TS16949
Cold Drawn Seamless Pipe , JISG3445 STKM11A STKM13A Round Steel Pipe
1.SAE1020 Carbon Precision steel tube are made using the cold drawing process. Precision tubes are made from carbon steel from quality Bao Steel,XingCheng Steel,and HuaiSteel.
2. The tubes are high precision in tolerance,excellent surface brightness,no oxidization on the outer and inner walls after heat treatment,high cleanness of inside wall.
3. No deformation after cold bending,no crack after flaring and flattening.
Specifications:
OD:4-60mm,Wall thickness:0.5-7mm
Tolerance Table Of Steel Tube
|
NAME |
SCOPE(mm) |
GB (mm) |
DIN (mm) |
Enterprise control(mm) |
Special high-precision(mm) |
|
Out Diameter |
4-30 |
±0.1 |
±0.08 |
±0.05 |
±0.03 |
|
31-40 |
±0.15 |
±0.15 |
±0.05 |
±0.03 |
|
|
41-50 |
±0.20 |
±0.20 |
±0.08 |
±0.03 |
|
|
51-60 |
±0.25 |
±0.25 |
±0.08 |
±0.03 |
|
|
Wall thickness |
0.5-7 |
±10%,Min±0.12 |
±10% |
±10%,Min±0.05 |
±10%,Min±0.03 |
Steel grades for carbon Precision steel tube
|
Standard |
Material |
|
EN10305-1 |
E215, E235, E255, E355,C45E, 30GrMo |
|
DIN2391 |
ST35, ST45, ST52, ST37.4 |
|
BS6323/4 |
CFS3,CFS4,CFS5,CFS8 |
|
ASTMA519 |
SAE1010,SAE1020,SAE1045 |
|
JISG3445 |
STKM11A,STKM13A |
|
SAEJ524 |
SAE1010 |
Delivery condition and heat treatment processing of carbon Precision steel tube
|
Delivery Condition |
Heat treatment process |
|
+C |
Cold drawn/hard.After the last cold forming,no heat treatment. |
|
+LC |
Cold drawn/soft.After the last heat treatment follows the cold drawing there is a light finishing pass. |
|
+SR |
Cold drawn and stress relieved annealed. After the final cold drawing process the tubes are stress relieved annealed in a controlled atmosphere. |
|
+A |
After the final cold drawing process the tubes are stress relieved annealed in a controlled atmosphere. |
|
+N |
Normalized. After the last cold drawing process the tubes are annealed in a controlled atmosphere. |
Length of precision tubes for carbon Precision steel tube
random length precision tubes in the range of 3 – 10 m
approximate length with tolerance 10 mm
tubes for the automotive industry also can be delivered as cut tubes according to customers’ requirment.
Manufacture process:
Synopsis of Process Routing: Quality Carbon steel — Cold Drawn — Heat Treatment Without Oxidization (NBK Status) — Nondestructive Testing— Flushing The Internal Hole
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