Home > Technical > Premium connectionsPremium connections
Relying on the company's own advantages ,as well as the strong support and technical guidance of the various research institutions and expert, we designed a variety of premium connection tool joints and into production. And is widely used in major oilfields at domestic and abroad.

DS series double shoulder connections which can interchangeable with API connections 

Improved second-generation double-shoulder premium connection 

Thread appearance of DS50 double shouder
connection after three times
make-up & break-in 
Higher torsional strength
Improved hydraulics
Longer service life

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