gb t 9711 erw steel tube of china supplier

API 5L Hot Smoking Pipe / ERW Welded Carbon Steel Line

API 5L Hot Smoking Pipe / ERW Welded Carbon Steel Line Pipe Tube,US $ 500 - 850 / Metric Ton,Tianjin,China,OIL PIPE,Non-Alloy.on .China SSAW Welded Pipe GB/T9711 Suppliers and Factory China Tianjin Big Diameter Steel Welded SSAW Steel Pipe What we can do with SSAW welding steel pipe? API Spec 5L Line pipe and steel pipe standard; BG/T 9711.1-1997 Delivery of petroleum and natrual gasindustrial transportation steel pipe Technical conditions Part 1 Grade-A Steel Pipe; GB/T 9711.2-1999 Delivery of petroleum and natrual gas industrial transportation steel pipe Technical

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