金属産業
aluminum
アルミニウム
abstract
alloy
architecture
backdrop artificial scene
backgrounds
blue background
closeup
design
diamond pattern
empty
grid pattern
heavy
industrial
industrial style
industry
material
metal
metallic
old
oldfashioned
pattern
plate
retro style
rusty
sheet metal
shiny
square shape
steel
strength
surface
surface level
textured
wall building feature
wallpaper decor