Alloy steel tubes are used in pipeline construction for the transportation of crude oil, natural gas, and other petroleum products. The tubes are used to form the pipeline itself, and can withstand the high pressures and corrosive conditions encountered during transportation.

Alloy steel tubes are used in oil and gas production for a variety of applications, including production tubing, casing, and downhole equipment. The tubes are used to transport oil and gas from the well to the surface, and to protect the wellbore from collapse and other damage.