Steel Pipe, Carbon Steel Pipe, Seamless Steel Pipe manufacturer / supplier in China, offering OTCG Oil Petroleum Casing Tubing Coupling J55/K55/N80/L80/C90/T95/P110/Q125/, Oil and Gas Well Casing Tube API 5CT N80 K55 OCTG, Oilfiled Casing&Tubing Pipe with API-5CT Thread and Coupled J/K55, N80, L80/P110/T95/Q125. and so on.
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