EU/LC High Temperature Oil Casing Joint

EU/LC High Temperature Oil Casing Joint

The oil casing joint is a very important connection in the petroleum industry, mainly used for the connection and maintenance of oil pipes and downhole tools. It consists of two short tubes that are threaded together. The material of the oil casing joint is usually steel, and the common grades are K55, J55, N80-1, N80Q, L80-1, P110, etc. These grades of steel all have different properties, and we can provide cross couplings in any size, length, grade and weight according to customer requirements. The quality of our products has always been our top concern, and we will continue to continuously improve and enhance our production process and quality control to ensure that our products always maintain high quality and safety performance.

There are two types of threads for tubing and couplings, non-upset threads (NU) and externally-upset threads (EU). There are also three thread types for casing and couplings, namely long round thread (LC), short round thread (SC) and buttress thread (BC). Different types and sizes of these threads can also be selected according to specific needs. The processing and inspection of oil casing joints is very important, because they need to withstand high pressure and high temperature environment, and any defect may lead to accidents. We have a complete system of testing and inspection methods, using a complete set of threading instruments to verify taper, pitch, number of teeth, height, profile, etc. Our products have passed the inspection of China Petroleum Pipeline Appraisal and Quality Supervision, Inspection and Testing Center, and have won unanimous praise from customers.