Construction worker welding a pipe on a busy industrial site, wearing safety gear, with other pipes and equipment in the background.
Palabras clave
construction,
men at work,
weld,
pipe,
industrial,
safety,
gear,
equipment,
engineering,
infrastructure,
hazard,
production,
protocol,
project,
standard,
maintenance,
background,
process,
condition,
guideline,
hard hat,
machine,
heavy,
tied-up,
procedure,
personal,
steelworker,
iron,
factory
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