Aerial view of gas and oil pipeline construction. Pipes welded together. Big pipeline is under construction.
Keywords
working,
equipment,
fitting,
gasoline,
supply,
crude oil,
metal,
technology,
environment,
technique,
tubing,
operation,
transmission,
structural,
civil,
development,
piping,
transfer,
building,
conduit,
crane,
pressure,
transport,
trunk,
machine,
architectural,
power,
line,
pipe,
industry,
oil,
gas,
construction,
natural,
energy,
engineering,
transportation,
pipeline,
tube