OCTG pipes are mainly used for drilling oil and gas wells and transporting oil and gas. It includes oil drill pipe, oil casing pipe, and oil pumping pipe. Oil drill pipe is used to connect drill collars and drill bits and transmit drilling power. Petroleum casing is mainly used to support the well wall during drilling and after completion to ensure the progress of the drilling process and the normal operation of the entire well after completion. The pumping pipe used to transports the oil and gas at the bottom of the oil well to the ground.

The oil casing is the lifeline to maintain the operation of the oil well. Due to different geological conditions, the stress state is complex, and the combined action of tensile, compressive, bending and torsion stresses on the pipe body, which puts forward higher requirements on the quality of the casing. Once the casing is damaged for some reason, the entire well may be reduced production or even scrapped.

According to the strength of the steel, the casing can be divided into different steel grades, are J55, K55, N80, L80, C90, T95, P110, Q125, V150, etc. Different well conditions and depths requires different steel grades. In the corrosive environment, the casing pipe also required to have corrosion resistance. In places with complex geological conditions, the casing pipe is also required to have anti-collapse performance.

Changsha Xiangjia Metal Materical Co., Ltd. the Steel Pipe Division of ADTO GROUP, is one of the leading manufacturers of steel products in China. We specializes in manufacturing all kinds of steel pipe in various grades and sizes. Years of production experience and manufacturing facilities who have a capacity of 200,000 tons per annual will ensure the good quality and competitive duration of our products.