E215 E235 E355 Cold Drawn Over Mandrel Seamless Steel Tubing
Drawn Over Mandrel Tubing
Steel Grade/Steel Material:
E155 E195 E235 E275 E355
Delivery Condition:
1 BK Cold finished(hard)
2 BKW Cold finished(soft)
3 BKS Cold finished and stress-relieved
4 GBK Annealed
5 NBK Normalized
Cold Drawn Seamless Steel Tubing
Size Range:
O.D.:6-350mm
W.T.:1-35mm
L:max12000mm
Characteristic:
Good concentricity
Good OD and ID tolerance
High precision
Stable quality
Smooth roughness
E215 E235 E355 DOM Steel Tube
DOM Steel Tube Production Process:
Raw material → Incoming inspection → Cutting → Heating → Piercing → Hammering →Pickling → Cold-drawing →
Heat treatment → Physical chemistry test → Straightening → Ends cutting → Final inspection → Bundling →Storage