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Octg Oilfield Petroleum API Casing&Tubing Pipe (J55/K55/N80/L80/P110/C95), Find Details and Price about Seamess Casing Pipes Seamless Tube from Octg Oilfield Petroleum API Casing&Tubing Pipe (J55/K55/N80/L80/P110/C95) - Tianjin Tiangang Special Petroleum Pipe Manufacture Co., Ltd.