Ключевые слова: abstract, background, background abstract, circle, construction, corrode, cylinder, decay, engineering, fabrication, group, hard, heavy, hole, industrial, industry, iron, line, manufacture, material, metal, metallic, no people, nobody, parallel, pipe, pipeline, pipes, piping, pumping, round, rust, rusty, stack, steel, texture, the corrosion, tube, tubing, used,