Precision DOM Steel Tube

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

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

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