Ключевые слова: abstract, architecture, background, barrier, black, border, building, chain, closeup, concrete, construction, design, equipment, fence, frame, galvanized, gray, grid, industrial, industry, iron, link, material, mesh, metal, metallic, net, netting, old, pattern, placed, protection, reinforcement, roll, rolls, safety, security, shape, site, steel, storage, strength, structure, surface, texture, textured, wall, welded, white, wire,