SEALED THREADED JOINT FOR CASING PIPES (VERSIONS)

摘要

The joint consists of the male and female elements with trapezoidal tapered threads with 1:16 taper performed correspondingly on the external and internal surfaces of its ends. Load flank inclination angle of the thread profile of the male and female elements is 2-4 to the thread axes normal line and lead-in flank inclination angle of the thread profile is 9-11 to the thread axes normal line. The joint is performed with inner sealing unit, formed by intercontacting bearing end surfaces located perpendicularly to the thread axis line. The bearing end length of the male element is 6,9-100,3 mm. High sealability of the joint under sufficient multidirectional loads applied is preserved as well as high durability of the joint, of its improved make-up features, internal casing pipes string flushness.