金属産業
architecture
arrangement
background
bars
batch
building
bundle
burnish
closeup
concrete
construction
corrode
corroded
corrosion
deterioration
elements
heavy
industrial
industry
iron
manufacture
material
metal
metallic
objects
pattern
pile
pole
profile
rail
reinforce
rods
round
rust
rusted
rusting
rusty
stack
stainless
stock
storage
strenghten
structure
supply
texture