... ERW Pipe Production Line/ERW Pipe Mill/ERW Pipe Making MachineExternal diameter: Max.Φ508mm(20inch)Steel grade: Max ... row forming/FFX formingConsist of: Coiler car, Decoiler, Peeler and straightener, Pinch and leveling Machine, End shear machine, Accumulator (Storage capacity ... (online) ultrasonic tester, FF/FFX/Roller row Foming machine, Squeeze roller unit, HF welder, internal and external burr ...