Ключевые слова: blue, brass, cement, clean, closeup, concrete, conduit, connect, construction, design, device, dirty, ducts, engineering, equipment, faucet, floor, flow, gas, gate, hand, home, house, household, industrial, industry, install, iron, locate, main, material, metal, nut, outdoor, outside, pipe, place, plastic, plumbing, pvc, red, rust, safety, screw, shutoff, steel, system, tap, tool, valve, wall, water, wheel,