... fill, and cap pass 2)With two welding heads Automatic High-efficient Welding MachineSuitable for industries of: OIL AND GAS, ... Rotary Engineering, Petrol Steel, CNPC, SINOPEC, CNOOC, CNCEC, etc.Automatic small pipe welding station consists of welding manipulator, elbow welding ... support device. It is able to realize automatic pipe welding completely.Features:1. Automatic root pass, fill, and cap pass2. ...