Ключевые слова: abstract, background, bolt, bond, build, chain, circle, closeup, collection, construction, element, equipment, fix, group, head, hexagon, hexagonal, industrial, industry, iron, isolated, large, machine, machinery, macro, many, material, mechanic, metal, metallic, object, pipe, piping, powerful, silver, small, stainless, steel, strength, supply, technology, texture, threaded, tool, tools, work, workshop, wrench, zinc,