acetylene
air
argon
building
capacity
chemical
compressed
construction
container
cylinder
cylinders
danger
equipment
factory
factory welder
fitter
gas
gauge
green
indicator
industrial
industry
interior
iron
job
liquid
manufacturing
metal
needle
nobody
object
oxygen
pipe
plant
pressure
production
propane
refill
steel
storage
street
tank
technology
tool
utility
weld
welder
welding
wheels
work