Ключевые слова: 3d illustration, architecture, bright, collection, connector, construction, corrosion, cutout, dark, different, dirty, drain, drainage, element, engineering, factory, fitting, frame, group, grunge, home, industrial, industry, metal, old, paint, pipe, pipeline, piping, plumbing, rivet, rust, rusty, scratched, set, several, sewage, sewer, shiny, steel, tube, valve, waste, water, wheel, white,