Ключевые слова: abstract, background, connection, connector, construction, design, engineering, equipment, faucet, fitting, fittings, fix, group, improvement, industrial, industry, isolated, metal, objects, part, pipe, pipeline, pipes, piping, plastic, plumber, plumbing, professional, pvc, repair, sanitary, service, set, steel, supply, system, technology, tool, tube, valve, water, white,