activity
build
construction
construction site
contractor
dozer
earth
energy
engineering
equipment
excavation
fuel
gas
gas pipe
gasoline
ground
heavy
hydraulic
industry
installation
installing
job
laying
line
liquid
long
lowering
machinery
natural gas
oil
operating
pipe
pipe layer
pipeline
piping
refinery
safety
shovel
side boom
soil
surface
technology
tractor
trench
tube
underground
underground pipes
vehicle
work
worker
定額
Natural gas pipeline construction work. A dug trench in the ground for the installation and installation of industrial gas and oil pipes. Crawler crane bulldozer with side boom or pipelayerの素材 [FY310137590134]
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