The Difference Between The Precision Steel Pipe And Seamless Pipe And The Usage Of Oil Special Steel Pipe
The Difference Between the Precision Steel Pipe and Seamless Pipe and The Usage of Oil Special Steel Pipe
Precision steel tube is a kind of high precision steel tube material after the process of cold drawn or hot rolling. Because of the precision steel tube inside and outside wall without oxidation layer, under high pressure without leakage, high precision, high finish, cold bending deformation, flaring, flattening without cracks, it is mainly used to produce pneumatic or hydraulic components products, such as cylinder components can be a seamless steel pipe or welded pipe. The chemical composition of precision steel tube with carbon sulfur C, Si, Si, Mn, Mn, S, P, P, chromium Cr.
The difference between precision steel pipe and seamless pipe
1. The seamless steel pipe main characteristic is a welding seam, and it can withstand greater pressure. Products can be very rough as-cast or cold components.
2. The precision steel pipe is the product appeared in recent years, mainly is the inner hole, the size of the outer wall with strict tolerance and roughness.
The usage and category of oil special steel pipe
Oil special steel tube is mainly used in oil and gas well drilling and oil and gas transmission. It includes petroleum drill pipe, oil casing and tubing.
Oil drill pipe is mainly used to connect the drill collar and bit. Oil casing pipe is mainly used in the drilling process and support the borehole wall after the completion to ensure that the drilling process and the normal operation of the oil wells after completion. Main pipe will be well at the bottom of the oil and transmit gas to the ground. During the using of the pipe, it had requirements to the pipe strength to guarantee delivery of oil and gas extraction. Oil casing is the main part of any oil wells. Due to different geological conditions, underground stress state is complex, tension, pressure, bending, torsion stress combination on the pipe body, which put forward higher requirements about the quality of the casing itself. Once the casing damage due to some reason itself, may lead to the whole production of the well, or even scrapped.
According to the strength of the steel itself, the casing can be divided into different steel grade, namely J55, K55, N80, L80, C90, T95, P110 and Q125, V150, etc. Different well conditions, hole depth, the grade of steel are also different. In corrosive environment, it also requires the casing itself has corrosion resistance. In the complicated geological conditions where also calls for casing collapse resistance.