Ключевые слова: abstract, background, bundle, cable, canalization, channel, circle, closeup, color, conduit, connection, construction, corrugated, damage, detail, drain, drainage, engineering, equipment, flexible, hole, hose, industrial, industry, irrigation, manufacturing, material, old, parallel, pattern, perspective, pipe, pipeline, piping, plastic, plumbing, pvc, round, sewage, sewer, site, stack, supply, technology, texture, threadbare, tube, tubing, water, white,