industry​ worker​ welding​ steel​ pipe​ with​ sparks​ light​ in​ factory​ on​ black​ background​

arc assembly black close connect construction craftsman dark equipment erection fabricate factory fire flash heavy helmet holder hot improvisation industrial industry job labor laborer laboring light man manufacture manufacturing marks mask metal metalwork pipe ppe process protection protective repair safety skill skilled smoke spark sparks steel structure technical tone trained tube wear weld welder welding work worker workman workplace workshop