armature
backdrop
background
balk
casting
crane
engineering
equipment
factory
forceps
foundry
furnace
hammer
heavy
helmet
industrial
industry
iron
ladle
liquid
manufacture
manufacturing
material
melting
metal
metallurgy
metalwork
mittens
molten
pattern
plant
product
production
profile
repeating
rolled
seamless
smelting
spanner
sparks
stainless
steel
technology
texture
trolley
tube
wagon
work
wrapper