Automatic Pipe Welding Machine, Pipe automatic welder 1)Automatic root pass, fill, and cap pass Automatic Pipe Welding MachineSuitable for industries of: ... Steel, CNPC, SINOPEC, CNOOC, CNCEC, etc.Automatic small pipe welding station consists of welding manipulator, elbow welding ... positioner and pipe support device. It is able to realize automatic pipe welding completely.Features:1. Automatic root pass ...