Oil well tubing is a basic material for the petroleum industry. It is an indispensable special pipe for oil exploration and development. It is also a major strategic material for the oil industry. Its quality and performance are related to the comprehensive economic and security benefits of the oil industry.

Oil well tubings are classified according to their uses; casings, oil pipes, drill pipes, etc.; they can be classified into seamless oil well tubings and welded oil well tubings according to the production process. Casing is mainly used to support the wellbore during and after drilling to ensure the drilling process and the normal operation of the well after the well. The tubing mainly transports the oil and gas at the bottom of the well to the ground; the main oil drilling pipe used to connect drill collars and drill bits and transfer drilling power.