accident
age
city
concrete
conduit
construction
construction works
corrosion
dilapidation
drain
drainage
duct
emergency
energy
engineering
equipment
excavation
grunge
heavy
industry
iron pipes
land
leak
material
metal
municipal
network
new
old
pipeline
pipes
pits
plumbing
reconstruction
repair
repair work
replacement
rough
round
rust
safety
sewage
sewerage
steel
supply
system
technology
trench
urban
worn
定額
Replacement of heating pipes and modernization of the heating system. Construction works on large iron pipes at a depth of excavated trench. Carrying out construction and repair work in the cityの素材 [FY310187799684]
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