... ERW Pipe Production Line/ERW Pipe Mill/ERW Pipe Making MachineExternal diameter: Max.Φ508mm(20inch)Steel grade: Max ... car, Decoiler, Peeler and straightener, Pinch and leveling Machine, End shear machine, Accumulator (Storage capacity: Max.200Tons), Planner (options), ... ) ultrasonic tester, FF/FFX/Roller row Foming machine, Squeeze roller unit, HF welder, internal and external burr removing unit, ...