new insulated water pipes in the trench construction site . urban sewerage infrastructure
Palabras clave
drainage,
sewerage,
construction site,
sand,
pipe,
age,
build,
construction,
engineering,
equipment,
factory,
grass,
ground,
industrial,
industry,
insulation,
iron,
labourer,
landscape,
laying,
line,
metal,
new,
occupation,
pipe,
pipeline,
piping,
reconstruction,
repair,
sewage,
sewer,
site,
dirtied,
steel,
supply,
system,
technology,
trench,
tube,
water,
weld,
work,
gas
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