API is the abbreviation of the American Petroleum Institute. API was founded on March 20, 1919. It is an organization that formulates standards. It has nearly 400 corporate members, engaged in oil development and production, transportation, refining and sales. Formulating coordinated standards is one of the earliest and most successful projects of API. Since the first standard was released in 1924, API has now released 500 standards. API oil casing has a hollow cross-section and is widely used as a pipeline for conveying fluids such as oil, natural gas, coal gas, water, etc. Made of steel pipe; annular parts can improve material utilization, simplify manufacturing processes, save materials and processing time, such as rolling bearing rings, jack sleeves, etc., which are currently widely made of steel pipes. API5ct oil casing can be divided into seamless steel pipes and welded steel pipes. Welded steel pipes mainly refer to straight seam steel pipes. Large-diameter oil casing is generally submerged arc welded straight seam steel pipe. The main application countries of this product are mainly distributed in the Middle East, Europe and the United States. API5ct oil casing can be divided into three specifications: R-1, R-2 and R-3 according to different lengths. Main materials are B, X42, X46, X56, X65, X70, etc. In extreme high temperature and high pressure environments, oil casing pipes have their own unique natural advantages. API 5CT oil casing from raw materials to products before leaving the factory must undergo flattening tests, tensile tests, impact tests, tensile tests and other related tests.
Seamless casing pipe
