central heating
city
construction
corrosion
digging
dirt
district
engineering
equipment
excavation
ground
heating
hole
industrial
infrastructure
iron
main
maintenance
mess
metal
metallic
modern
network
new
obsolete
old
one
pipe
pipeline
pipeline network
pipes
pit
plastic
removing
repair
replacement
replacing
sewerage
supply
systems
underground pipes
water
work
定額
repair and replacement main pipeline of heating systems, district heating pipes network, water supply or Sewerage in city, removing old pipes and replacing them with new ones in a hole in the groundの素材 [FY310144321039]
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