Ключевые слова: abstract, alloy, aluminum, armor, background, bolt, border, construction, copyspace, design, dirty, frame, grunge, hard, heavy, industrial, industry, iron, ironworks, machine, material, metal, metallic, military, panel, pattern, pin, plate, rivet, rivets, rough, rust, rusty, screw, shaped, sheet, shiny, space, spike, stainless, steel, surface, tank, template, texture, textured, wall, wallpaper, weathered,