Related keywords: pipe welder, pipe fitter, pipefitter, pipe welding, welder, weld, pipe, 1g, 2g, 3g, 4g, 5g, 6g, solder, sweat, boilermaker, boiler, pipe threading, pipe threader, commercial, industrial, apprentice, construction, new construction, install, project, on-site, safety, skilled, skilled trade, craft, skilled craft . Assemble and secure pipes, tubes, fittings, and related equipment, according to specifications, by welding, brazing, cementing, soldering, and threading joints.