Lays out, fabricates, assembles, installs, and maintains piping systems, pipe supports, fixtures, and related hydraulic and pneumatic equipment for steam, hot water, fixtures, and equipment for steam, hot water, heating, cooling, lubricating, sprinkling, and production and processing systems. Assembles and installs a variety of metal or nonmetal pipes and pipe fittings using threaded, caulked, soldering, brazed, fused, or cemented joints and hand tools.