background
building
clean
construction
cylinder
district
energy
engineering
equipment
factory
gas
heating
heavy
hose
industrial
industry
infrastructure
iron
joint
line
manufacturing
metal
oil
old
pipe
pipeline
pipes
piping
plant
plastic
plumbing
polymer
power
pressure
pump
pvc
refinery
rusty
safety
sanitary
steam
steel
system
technology
tube
valve
water
work
定額
Black water pipes joined with rusty red valves for safety and clean watering system in modern building construction and industrial.の素材 [FY310135515843]
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