... pipe. Fine structure, easy operation, specialized in manufacturing. Automatic SS Welding Pipe Making MachineAutomated production process: 1.First, ... best materials. Steady, durable and long life. 2.Automatic control, easy to operate. 3.Easy to replace the ... one year warranty. Machinery main components: open book machine (uncoiler),→ forming welding machine,→ grinding machine, →sizing machine,→ frame ...