National Occupational Classification (NOC) 2016 Version 1.2

• 7 - Trades, transport and equipment operators and related occupations
• 72 - Industrial, electrical and construction trades

725 - Plumbers, pipefitters and gas fitters

This minor group includes plumbers, steamfitters, pipefitters, sprinkler system installers and gas fitters. They are employed by plumbing contractors; maintenance departments of factories, plants and similar establishments; pipefitting and sprinkler system contractors; and gas utility and gas servicing companies; or they may be self-employed.