Ключевые слова: and, bolts, built, connection, construction, danger, design, diagonal, electric, electricity, energy, engineering, flange, hardware, heavy, high, horizontal, industrial, industry, iron, joint, line, manufacturing, material, metal, metallic, nuts, old, plumb, power, rust, rusty, screwed, screws, seam, separation, steel, strong, structure, technology, tension, texture, tool, tower, weld, welded, welder, welding, wire,