Some of the different jobs in the plumbing industry include plumbers, pipefitters, and steamfitters. Plumbers address all manner of plumbing tasks. Pipefitters, sometimes referred to simply as fitters, install specialized pipes that carry sensitive materials, such as natural gas, acid, or chemical compounds. These are typically for industrial operations, such as at manufacturing or power plants or gas pipelines. Steamfitters perform similar jobs, installing, maintaining and repairing piping that carries steam or other pressurized materials.