Ключевые слова: abstract, background, chain, closeup, company, connection, construction, design, detail, drum, fastening, gray, grunge, heavy, historic, industrial, industry, iron, link, linked, machine, machinery, material, mechanical, metal, metallic, mica, old, pattern, pulley, robust, rust, rustless, rusty, security, ship, steampunk, steel, strength, technical, texture, vintage, wallpaper, weathered, welded, welded metal, white, wire, workshop, zinc,