aged
antique
background
blemish
bolt
cast iron
connector
corrode
corrosion
dead
destruction
dirt
dirty
erosion
filth
gas
grunge
hammered hole
hose
industry
iron
isolated
lock
material
metal
nut
nut and bolt
oil
old
pipe
pipelines
problem
repairs
replacement of pipes
rough
round
rust
rusty
sewage pipe
smudge
steel
surface
system
tube
vintage
water
water pipes
weather
white
worn out