aluminum
アルミニウム
argon
balloon
bright
burner
chameleon
construction
craftsmanship
design
detail
drive
electric
electrode
engine
engineer
fire
gas
gloves
goggles
helmet
hot work
industry
inert
installation
light
manufacturing
mask
mass
master
metal
nozzle
oil
pipe
production
protection
ring
rod
specialist
stainless steel
steel
technology
titanium
torch
uniform
welder
welding
wire
work
worker
workplace