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N80 Q Seamless Casing Pipes 168.3*7.32 BTC Thread used in oil field Standard: API SPEC 5CT. Steel grade: J55/K55/N80/L80/P110/C95 O. D. Range Tubing: From 2-3/8"(60.3mm)to 4"(101.60mm) Pipe End: EUE...