What is oil and gas piping?

Piping is used as a transfer medium to transport fluids from one end to the other. In the case of oil and gas industry,there are two general types of energy pipelines liquid petroleum pipelines and natural gas pipelines network there are crude oil lines refined product lines highly volatile (HVL) lines and dioxide lines (CO2)

Le petrole et le gaz sont  des ressources energetiques  

Oil piping is used for carry the liquid oil from one point to another with or without pressure but in Gas piping the gas will be carry in piping pressurise.

piping fabrication is used for liquid material one place to another place and for gas used pipe fabrication with any pressure

piping is used medium to transport fluids  from end to another.

Piping is used as a transfer medium to transport fluids from one end to the other. In the case of oil and gas industry, finitely long cylindrical tubes are used with the help of differential pressure to push fluids from one place (for example the rig) to the other place (for example processing plant onshore). Pipings vary in material and dimensions depending on external and internal variables of the fluids transfer. 

oil is a liquid , why pipe is an iron that have hole which oil pass through,, from one area to other .

Piping is used to transport goods through pipe.General types of energy pipelines are liquid petroleum pipelines and natural gas pipelines. in liquid petrolium pipeline network there are crude oil lines, refined product lines, HVL lines, and CO2 . 

 Commonly gas(fuel gas )are pressurized into liquids and transported.