тръбопровод означава в английски

conduit [conduits]▼(pipe or channel for conveying water)
noun
[UK: ˈkɒn.dwɪt] [US: ˈkɑːn.duː.ˌɪt]

pipeline [pipelines]▼(conduit made of pipes)
noun
[UK: ˈpaɪ.plaɪn] [US: ˈpaɪ.ˌplaɪn]

tubing [tubings]▼(system of tubes)
noun
[UK: ˈtjuːb.ɪŋ] [US: ˈtuːb.ɪŋ]