aluminum
アルミニウム
3d
abstract
background
black
bronze
burnish
business
chrome
circle
close
connection
construction
copper
cylinder
design
element
engineering
gas
gray
group
illustration
industrial
industry
iron
isolated
line
long
material
metal
metallic
metalworking
object
pipe
pipeline
plumbing
product
profile
pyramid
round
row
shiny
stack
stainless
steel
technology
tube
tubing
white