機器
automatic
blast
cast
cast iron
casting
centrifugal
coating
conversion
engineering
equipment
factory
fire
foundry
furnace
glowing
heat
heavy
hot
hydraulic
industrial
industry
iron
line
liquid
machinery
manufacture
manufacturing
melting
metal
metallurgical
metallurgy
metalworks
mill
mold
molten
motor
pipe
plant
pouring
process
production
red
roll
shaft
smelting
steel
technology
worker
workshop