Casing Pipe, Seamless Steel Pipe, High Pressure Boiler Tube manufacturer / supplier in China, offering API 5CT/5b Standard Sc/Ltc/Btc/Vam/NPT Thread J55/K5/N80/L80-1/L80-3cr/L80-9cr/L80-13cr/P110/13cr-110 Oil Casing Steel Pipe, Alloy/Galvanized Pipe Corrosion Preventive/High Strength A106 Oil Drill Steel Pipe Deep Sea, 9 5/8′′inch Large Caliber OCTG API 5CT N80/L80 Casing Steel Pipe Deep Oil Wells and so on.
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