aluminum
アルミニウム
armature
bar
beam
business
casting
clipart
collection
construction
elements
engineering
equipment
expanded
filled
flat
glyph
graphics
icon
illustration
industry
iron
manufacturing
material
melting
metal
metallurgy
mining
pack
panel
perfect
pictogram
pipe
pixel
plate
process
production
profile
rod
set
sign
simple
solid
stainless
steel
symbol
tube
web
welder