Spiral Welded Steel Pipes2008-11-10
Specification:
1. OD: 219- 2850mm
2. Wall thickness:6.0mm - 22.0mm
3. Standard: GB/T9711-1997, ASTM A 53, DIN, JISG APL 5L/5CT (PSL1, PSL2) (GB/T3091,...
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