aluminum
アルミニウム
abstract
ash
background
chrome
chromed
construction
dark
dirty
galvanize
galvanized
grey
grunge
grungy
industrial
industry
iron
lines
metal
metallic
old
oxidized
panel
pattern
plate
plated
rows
scratch
scratched
sheet
shiny
silver
spot
stain
stainless
steel
stripes
surface
texture
textured
tin
vertical
weathered
zinc