機器
alloy
blast
burning
cast
cast iron
casting
craft
equipment
factory
fire
flame
forming
foundry
furnace
heat
heavy
indoors
industrial
industry
iron
ladle
liquid
machinery
man
manufacture
manufacturing
melt
melting
metal
metallurgical
metallurgy
metalwork
mill
mold
molten
pipe
pouring
production
red
smelter
smelting
spark
steel
steelworks
tube
work
worker
working
workshop