Repair work on welded flange large chemical apparatus
Palabras clave
metal,
mask,
men at work,
construction,
welding,
safety,
industry,
light,
work,
arc,
welder,
smoke,
fire,
flash,
spark,
industrial,
steel,
factory,
skilled,
job,
craftsman,
heat,
manufacture,
labourer,
man,
technical,
skill,
protection,
repair,
fabricate,
trained,
gas,
structure,
join,
helmet,
hot,
welded,
assembly,
iron,
manufacturing,
technology,
weld,
connect,
hand,
making,
wear,
equipment,
production,
pipe,
torch
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