aluminum
bar
bunch
bundle
chrome
circle
construction
corrosion
durable
equipment
factory
ferrous
girder
group
heap
heavy
industrial
industry
iron
joist
manufacture
material
metal
metallic
objects
old
pile
pipe
pipeline
plant
plate
profile
rod
rough
rust
rusty
sheaf
shelf
stack
stainless
steel
storehouse
technological
technology
tube
warehouse