... 5L, API 5CT Description: ERW Pipe Production Line/ERW Pipe Mill/ERW Pipe Making MachineExternal diameter: Max.Φ508mm(20inch ... FF forming/roller row forming/FFX formingConsist of: Coiler car, Decoiler, Peeler and straightener, Pinch and leveling Machine, End shear machine, ... welder, internal and external burr removing unit, Polisher unit, Pipe (online) ultrasonic tester, IF annealing unit, Air coolant, ...