- Alloy Casting steel pipe
- 2016-10-30 17:10
- Introuduction:High strength rare earth alloy casting steel pipes (thermal resistance and wear-resistance) used as coal c
- Spiral Welded Steel Pipe
- 2016-10-26 13:39
- Process:ERW (Electric Resistance Welded)HFI (High Frequency Induction)EFW(ELECTRIC FUSION WELDED TUBE)LSAW (Longitudinal