Stainless Steel Connector

Pioneer enterprise is manufacture of highly exclusive ss 316 connector 1.315" nue male thread x 1" tubing with double ferrule and nut which is used in drilling, mining and production industry. What is the need for nue connectors?
it has been established that the use of steel pipe is the most practical means to make a pressure vessel suitable for the drilling and production environment. Many prac¬tical considerations require that the pipe be used in separate lengths, each length being joined in sequence as it is lowered into the wellbore. The connection between lengths must sustain high tensile loads and at the same time provide pressure containment from both net internal and external pressures. This connection is made through the joining of threaded pipe ends, most commonly with the aid of a threaded coupling. With the exception of a growing number of proprietary connections, the con¬figuration and specifications of these connections have been standardized through the efforts of the api.