Industries & Professions /
Plumbers and Pipefitters
Plumbers and pipefitters assemble, install, alter, and repair pipes and pipe systems that carry water, steam, air, or other liquids and gases for sanitation and industrial purposes as well as other uses. Plumbers also install plumbing fixtures, appliances, and heating and refrigerating units. There are approximately 555,900 plumbers and pipefitters working in the United States.