Pipefitters work mainly in the manufacturing industry. They lay out, install and maintain piping systems that provide steam heat, power, water, hydraulic pressure, air pressure and oil. They bend, cut, weld and bracket pipes; repair, pack and adjust valves; test installed equipment for leaks and check that systems meet government specifications.
The work is done inside manufacturing facilities. Conditions can be noisy, warm or cold to extreme, and welding fumes and dust may be present. The protective gear worn to protect pipefitters is cumbersome and heavy.