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