API 5CT J55 and K55 seamless steel pipe casing couplings1

API SPEC 5CT Oil Well Sub

The oil and gas industry is one of the most important industries in the world, providing a large part of the energy needed by the economy and industry. To extract oil and gas from the ground, a complex apparatus of pipes, fittings and tools is required. One of the key components is the oil casing joint, which is used to connect two spools and maintain the tubing and downhole tools. There are two main types of oil casing joints: oil pipe joints and casing joints. Tubing fittings are used to connect smaller diameter pipes while casing fittings are used to connect larger diameter pipes. Both types of accessories are essential to the proper functioning of oil and gas extraction operations. The thread types used in oil casing joints are non-upset thread (NU), externally upset thread (EU), long round thread (LC), short round thread (SC) and buttress thread (BC); thread type selection Depends on the specific application and requirements of oil and gas extraction operations. The grade of tubing and casing fittings is also an important consideration. Common grades include K55, J55, N80-1, N80Q, L80-1, and P110; the choice depends on the requirements of the specific oil and gas production operation.
Oil casing pup joints are machined in accordance with the latest edition of API SPEC 5CT, which sets standards for oil and gas extraction equipment. The steel grades used for oil casing pup joints include J55, K55, N80-1, N80Q, L80-1, P110, etc. The short joint testing method system is complete, and a complete set of threading instruments is used to test parameters such as taper, pitch, profile, height, and profile. The product has passed the appraisal of PetroChina Pipeline and won unanimous praise from customers. These couplings are available in any size, length, class and weight according to customer requirements. In addition to couplings, we also produce pup joints, cross joints, sucker rod couplings and cementing tools. With our well-established testing and inspection methodologies, we are committed to providing quality products that meet our customers' needs.