Ключевые слова: circle, conduit, connection, connector, construction, drain, drainage, energy, equipment, faucet, fitting, group, hold, home, housing, improvement, industrial, industry, line, manufacturing, new, object, pipe, pipeline, piping, plastic, plumber, plump, polypropylene, pressure, pvc, repair, round, sanitary, service, set, sewerage, supplies, supply, system, tap, technology, tool, tube, water, white,