Cold Drawn Seamless Steel Tube, also known as Precision Steel Tube for Cylinder System, is manufactured through a precise cold drawing process, ensuring high precision and consistent wall thickness. Ideal for applications requiring high mechanical strength and durability.
Main Material: E235, E355
Other Available Materials: 10#, 20#, 45#, 16Mn, ST30Al, ST35, ST37, ST37.4, ST45, ST52, ST52.4, E155, E195, E255, etc.
Outer Diameter (OD): 4-120mm
Wall Thickness (WT): 0.5-15mm
| Condition Code | Description |
|---|---|
| BK (+C) | No heat treatment after last cold forming process |
| BKW (+LC) | After last heat treatment there is a light finishing pass (cold drawing) |
| BKS (+SR) | After the final cold forming process the tubes are stress relieve annealed |
| GBK (+A) | After the final cold forming process the tubes are annealed in a controlled atmosphere |
| NBK (+N) | After the final cold forming process the tubes are annealed above the upper transformation point in a controlled atmosphere |