How to say "plumbing" in Japanese
Choosing the right word
- 配管はいかんnoun, suru verb, intransitive verbThe common word, covering plumbing as piping: the pipes themselves or the pipework of a building or facility. Choose this when 'plumbing' means the pipe system rather than the work done on it.
- 配管工業はいかんこうぎょうnounLess common; it names the plumbing industry — the trade as a business or sector — so it is seldom the word you want for plumbing itself.
- 配管工事はいかんこうじnounLess common; this is plumbing as work: laying or installing pipes. Choose it when 'plumbing' refers to the job being carried out rather than the pipes or the system.
For plumbing as pipes or pipework use the common 配管; for plumbing as the work of laying pipes the less common 配管工事; 配管工業, also less common, really names the plumbing industry rather than plumbing itself.
Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only
Japanese equivalents


