aluminum
angle
angleiron
bar
bunch
bundle
chrome
concrete
construction
corrosion
diminishing
durable
factory
ferrous
girder
group
heap
heavy
industrial
industry
iron
joist
manufacture
material
materials
metal
metallic
objects
old
part
pile
plant
plate
profile
rod
rough
rust
rusty
sheaf
stack
steel
storehouse
technological
technology
warehouse