Ключевые слова: arc, connect, construction, craftsman, diameter, engineering, equipment, factory, fire, flange, flash, gloves, heat, helmet, industrial, industry, iron, job, labor, laborer, light, man, manufacture, manufacturing, mask, metal, part, pipe, pipeline, plumbing, protection, protective, repair, safety, shiny, skill, spare, spark, stainless, steel, technology, tool, torch, tube, weld, welder, welding, wheel, work, worker,