The CW-18 Circle Welder is designed for welding of nozzles into vessels or domed heads utilizing SAW process. The CW-18 mounts on a 3-Jaw Chuck. It is capable of welding diameters of 10″ to 50″ (152-1270 mm) O.D. and using welding wire diameters 3/32- 5/32″ (2.4-4.0 mm). The wire feed control box provides: wire speed (amperage) control, voltage control, wire burn back, weld contact, cold wire switch, weld start parameter adjustment and weld crater parameter adjustment.