How to prevent the fastening ring of J55 ERW casing from bonding? API ERW casing adopts hollow section. A large number of pipelines are used to transport fluids, such as oil, natural gas, gas, water, etc. Using steel pipe to manufacture rings can improve the utilization ratio of materials, simplify the manufacturing process, save material and processing time, such as rolling bearing rings, Jack sleeves, etc. It has been widely used in the manufacture of steel.






API ERW casing is mainly used for oil and gas drilling and oil and gas transportation. It includes oil drilling pipe, oil casing and pumping pipe.






The drilling rig is mainly used to connect drill collar and bit and drive through drilling. ERW casing is mainly used in the drilling process and after the completion of wall support, to ensure the normal operation of the drilling process and the completion of the well.






ERW casing is the lifeline to maintain oil well operation. Because of different geological conditions, the state of underground force is complex, tension, pressure, bending and torsion stress act on the pipe body together, which puts forward higher requirements for the quality of casing itself. Once the casing itself is damaged for some reason, the whole well may be cut or even scrapped.