aluminum
アルミニウム
abstract
ash
backdrop
closeup
construction
corrugated
dark
design
dirty
galvanized
gray
grey
grunge
grungy
industrial
industry
iron
material
metal
metallic
old
oxidized
panel
pattern
plate
plated
retro
scratch
sheet
shiny
silver
spot
stain
stainless
steel
surface
texture
textured
tin
vintage
wall
wallpaper
weathered
zinc