abstract
accessory
armature
armouring
background
bar
brown
building
bundle
carcass
concrete
construct
construction
corroded
corrosion
corrosive
ferroconcrete
fittings
framework
heap
heavy
industrial
industry
iron
lines
material
merchandise
metal
metallic
old
parallel
pile
pole
rail
rebar
reinforce
reinforcement
reinforcing
rigid
rod
rough
rust
rusty
stack
steel
structural
structure
surface
texture
wire