API 6A Drilling Integral Fittingunion pup joint
After heating the tubing end, it is sent to the thickening equipment for upsetting. Make the tubing end plastic deformation (the inner diameter of the tubing end will not change, and the wall thickness of the tubing end and the effective length of the thick wall section will be increased). So as to achieve the purpose of thickening outside the pipe end. Standards: APISpec-5CT/5B, ISO11960. In China, it is usually delivered according to a certain range of secondary length R2. The process of external thickening is a complex compound process of upsetting, expanding and extruding. The purpose of thickening is to enhance the strength of the threaded connection part of the tubing, improve the service time of the threaded connection part, avoid the fracture, and then extend the service life of the tubing and prevent accidents! EASTSUN has pup joint mill in both China and Vietnam. We supply to the countries has no anti-dumpling to china pup joint from China mill, and supply to the…
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