Ключевые слова: background, blue, building, connection, construction, control, distribution, engineering, equipment, factory, faucet, flow, flowing, home, industrial, industry, installation, joint, line, maintenance, metal, object, pipe, pipeline, piping, plastic, plumber, plumbing, power, pressure, protection, pvc, red, reducing, sewage, sewer, system, technology, tube, tubing, valve, water, white, work,