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Cold drawn Seamless Steel pipe and tube
Cold drawn Seamless Steel pipe and tube
Cold drawn Seamless Steel pipe and tube
Cold drawn Seamless Steel pipe and tube

DIN2391 Cold drawn Seamless Steel pipe and tube

Cold Drawn Seamless Mechanical Tubing (CDS) is a cold drawn 1018/1026 steel tube which offers uniform tolerances, enhanced machinability and increased strength and tolerances compared to hot-rolled products.
Product introduction
Cold drawn steel tube is with hot-rolled steel coil as raw material, and tandem cold rolling pickled to remove oxide scale, its finished rolling hard roll, rolling hard volumes due to the continuous cold deformation caused by cold hardening strength, hardness increased indicators declined tough plastic, stamping performance will deteriorate, which can only be used for simple deformation of the parts.
Material
10#,20#,35#,45#;16Mn;20Cr,40Cr;15CrMo,30CrMo,35CrMo,42CrMo;A106B,St37,St42,ASTM 4140 etc.
Technique
Cold Rolled/Cold Drawn/Hot Rolled
Wall Thickness
1-25mm
Out Diameter
10-325mm
Application
Structure pipe; High and low pressure boiler tube; Liquid delivery; Seamless steel pipe for petroleum cracking ,Oil pipe,Gas pipe
Payment
TT/LC
Surface
Customer's Requirement
MOQ
1 ton for normal material

Cold Drawn Seamless Mechanical Tubing

Rolling hard roll can be used as the raw material of the hot-dip galvanizing plant, hot dip galvanizing line set annealing line. Rolling hard roll weight is generally 6 to 13.5 tons, the coil diameter of 610mm.

Condition on delivery:
Term Symbol Explanation
Cold-finished/hard
(cold-finished as-drawn)
BK No heat treatment after the last cold-forming process. The tubes therefore have only low deformability.
Cold-finished/soft
(lightly cold-worked)
BKW After the last heat treatment there is a light finishing pass (cold drawing) With proper subsequent processing, the tube can be cold-formed (e.g. bent, expanded) within certain limits.
Annealed GBK After the final cold-forming process the tubes are annealed in a controlled atmosphere or under vacuum.
Normalized NBK The tubes are annealed above the upper transformation point in a controlled atmosphere or under vacuum.

 

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