environmental
business
civil
conduit
construction
construction site
dig
dirt
district
ditch
drainage
drainage system
engineering
equipment
excavation
ground
ground works
heat
heating system
hole
infrastructure
line
long
perspective
pipe
pipeline
pipes
piping
pit
plastic
plumbing
power
process
protective
replacement
sanitary sewer
sewage
sewer
sewer pipes
sewer wells
site
soil
supply
technology
trench
tube
underground
water
water main
work
定額
Laying heating pipes in a trench at construction site. Install underground storm systems of water main and sanitary sewer. Cold and hot water, heating and heating system of apartments in the houseの素材 [FY310161394106]
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