angle
angleiron
building
bunch
bundle
capping
cast
closeup
concrete
construction
corrosion
durable
factory
ferrous
fittings
fusing
fusion
girder
heap
heat
heavy
industrial
industry
iron
joist
manufacture
materials
metal
metallurgy
mountings
pattern
pile
plant
plate
reinforcement
reinforcing
rod
rough
rust
sheaf
sheet
steel
storehouse
stuff
tap
technological
technology
tough
warehouse