... fill, and cap pass 2)With two welding heads Automatic Small Pipe Welding Station (1"-8")Suitable for industries of: ... Rotary Engineering, Petrol Steel, CNPC, SINOPEC, CNOOC, CNCEC, etc.Automatic small pipe welding station consists of welding manipulator, elbow welding machine ... support device. It is able to realize automatic pipe welding completely.Features:1. Automatic root pass, fill, and cap pass2. ...