Ключевые слова: bending, circle, closeup, conduit, construction, conveyor, cylinder, duct, equipment, factory, ferrous, formed, gas, hardware, industrial, industry, inside, iron, manufacture, manufacturing, metal, new, not welded, object, pipe, pipeline, piping, plate, production, production line, roll, roller, round, seam, sewer, sheet, stack, steel, tube, tubing, unfinished, welding, without,