Ключевые слова: abstract, background, black, blue, build, circle, circular, closeup, conduit, construction, cylinder, drain, drainage, engineering, equipment, factory, grey, hdpe, horizontal, hose, industrial, industry, line, manufacturing, material, metal, new, oil, pattern, perspective, pipe, pipeline, piping, plastic, plumber, plumbing, pvc, repair, road, round, rubber, service, sewage, sewer, size, stack, stacked, steel, storage, store, supply, technology, texture, tube, tubing, warehouse, water, white,