AMI Model 79 full-function weld head - welding sequence

The Model 79 series of high durability, "full function" weld heads are designed for fabrication shop and field process pipe welding applications. The Model 79 weld heads have a unique integral clamping system which gives each weld head the ability to adjust for different pipe and tubing diameters in seconds, thereby eliminating the requirement for specific sized guide rings. The M79 weld head series can accommodate a range of pipe sizes from 0.75" OD to 6.625" OD (19 mm to 170 mm) and wall thicknesses up to 0.75" (19 mm).