Ключевые слова: 3g, arc, background, close, close up, connect, connection, construction, craft, detail, engineering, example, fabrication, factory, industrial, industry, iron, isolated, joint, line, manufacture, manufacturing, material, metal, metallic, new, pattern, production, repair, sample, seam, sheet, solder, stainless, steel, structure, surface, t, technology, tee, texture, together, type, weld, welded, welder, welding, welds, white, work,