Steel Grade/Steel Material/Steel Number:
STM-C-540 STM-C-640 STM-R-590 STM-R-690 STM-R-780 STM-R-830
Size Range:
OD: 5-420mm
WT: 0.5-50mm
Characteristic:
Good Surface Quality
Good OD and ID tolerance controlled to Technical Standard
Stable quality
100% Eddy Current Test
TORICH QUALITY ASSURANCE
Production Processs:
Raw Material → Incoming Inspection → Storage → Cutting → Hammering → Pickling Lubrication → Cleaning→ Phosphorization → Clean → Lubrication → Cold Drawing/Cold Rolling → Middle Check → Heat Treatment → Straightening → Ends Cutting → Final Inspection → Bundling → Storage
Raw Material Tube:
Seamless Hollow Sections, produced by hot piercing or hot rolled.
| 담당자 : | Becky Zhang |
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