Outer diameter: 6mm -325mm
Wall thickness: 3-36mm
Cold Drawn Tube can be produced according to the demands of costumers that the degree of precision can reach H9/H11.
Material & Chemical Composition
|Product Name||E215 steel pipe||E235 steel pipe||E355 steel pipe|
|chemical analysis||C:≤0.10;Si:≤0.05;Mn:≤0.70;P:≤0.025; S:≤0.025;Al:≤0.025||C:≤0.17;Si:≤0.35;Mn:≤1.20;P:≤0.025; S:≤0.025||C:≤0.22;Si:≤0.55;Mn:≤1.60;P:≤0.025; S:≤0.025|
|Tensile Strength||+C,≥430MPa; +LC,≥380MPa;+SR,≥380MPa;+A,≥280MPa;+N,290-430MPa||+C,≥480MPa; +LC,≥420MPa;+SR,≥420MPa;+A,≥315MPa;+N, 340-480MPa||+C,≥640MPa; +LC,≥580MPa;+SR,≥580MPa;+A,≥450MPa;+N,490-630MPa|
|Yield strength||+SR,≥280MPa; +N,≥215MPa||+SR,≥350MPa; |
| +SR,≥450MPa; +N,≥355MPa|
|Length||As customer's request|
|Packaging||Standard export packing, packed in woven bags, with two nylon slings, or can be customized as request|
|Heat Treatment/ Delivery Condition|
Tubes do not undergo heat treatment following the final cold forming and, thus, have a rather high resistance to deformation
- Cold finished (hard) BK(+C)
The final heat treatment is followed by cold drawing involving limited deformation. Appropriate further processing allows a certain degree of cold forming (e.g. bending, expanding)
- Cold finished (soft) BKW(+LC)
Heat treatment is applied following the last cold forming process. Subject to appropriate processing conditions, the increase in the residual stresses involved enables both forming and machining to a certain degree.
- Cold finished and stress-relieved annealing BKS(+SR)
The last Cold forming process is followed by annealing in a controlled atmosphere.
- Annealed GBK(+A)
The last cold forming process is followed by annealing above the upper transformation point in a controlled atmosphere.
- Normalized NBK(+N)
|Delivery Time||Within 35-50 days from receiving deposit|
|Payment Term||100% L/C at sight or 30% deposit, 70% balance against copy of B/L|
|Usage/Application||Pipes for automobile and motorcycle|
|Main Market||Asia, Middle East, Europe, etc.|
|Inner Dia (mm)||ID Tolerance (mm)||WT Tolerance (mm)|
|Processing Form||I. D||Length||Straightness||I. D Tolerance||I. D Rounghness|
|Cold-drawn||30-250||≤ 12M||0.3-1.0|| ||0.8-1.6|