Ключевые слова: bolts, close, connection, device, direction, engineering, equipment, flange, flow, gate, industrial, industry, inner, isolator, line, material, metal, mute, off, old, open, outer, paint, pipe, pipeline, piping, pressure, repair, rough, rust, rusty, screw, screw bolt, screwing, steel, supply, tank, technical, temporary, tube, tubing, valve, water, water pipe, water supply, weathered,