機器
aluminum
bar
chrome
construction
corroded
corrosion
cylinder
decay
decaying
depot
energy
equipment
factory
flow
gas
heavy
hole
industrial
industry
iron
long
mass
material
metal
metal pipe
oil
oil pipe
old
parallel
petroleum
pipe
pipes
pumping
regular
rig
rust
rusted
rusting
rusty
rusty pipe
stack
steel
texture
tube
tubing
water
water pipe
weathering