... ERW Pipe Production Line/ERW Pipe Mill/ERW Pipe Making MachineExternal diameter: Max.Φ508mm(20inch)Steel grade: Max ... Pinch and leveling Machine, End shear machine, Accumulator (Storage capacity: Max.200Tons), Planner (options), Edge miller, Plate (online) ultrasonic tester, ... FF/FFX/Roller row Foming machine, Squeeze roller unit, HF welder, ...