Ключевые слова: assembly, bolt, builder, connection, construction, drain, drainage, duct, engineer, equipment, fitter, fitting, fix, flange, heat, heating, industrial, industry, installation, man, metal, metro, nut, pipe, pipeline, piping, plumber, plumbing, pump, repair, repairing, screw, screwdriver, service, sewage, sewer, subway, supply, tie, tool, tube, tunnel, underground, uniform, wastewater, water, waterline, work, worker, wrench,