arc
connect
construction
diameter
engineering
equipment
factory
fire
flange
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
smoke
spare
spark
stainless
steel
technology
tool
torch
tube
weld
welder
welding
wheel
winter
work
worker