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API 5L SCH80 steel pipes Specifications ERW line pipe steel grade: API 5L A,B X42-X70 O.D. (mm) Φ139.7 Φ159 Φ168.3 Φ219.1 Φ228.6 Φ244.5 Φ273.1 Φ323.9 Φ325 Φ339.7 Φ377 Φ406.4 Φ426 W.T. (mm) 3.20~ 12.7 ...