boilermaker

As nouns the difference between boilermaker and pipefitter

is that boilermaker is a person qualified to make or repair boilers while pipefitter is an industrial tradesman who installs and maintains piping systems.

As nouns the difference between welder and boilermaker

is that welder is one who welds, or unites pieces of iron, etc., by welding while boilermaker is a person qualified to make or repair boilers.

As nouns the difference between boilermaker and steamfitter

is that boilermaker is a person qualified to make or repair boilers while steamfitter is a person qualified to handle installation and maintenance of piping that carries steam.

As nouns the difference between ironworker and boilermaker

is that ironworker is a person employed to manufacture and shape iron while boilermaker is a person qualified to make or repair boilers.