News & Media
  • JST got new invention paten in USA
    JST got new invention paten in USA
    • August 11, 2021

    Good news! JST successfully got the authorization of invention patent on a Secondary Pack Off Sealing Structure in USA by United States Patent and Trademark Office in July, 2021. During the drilling operation and oil and gas testing, the casing head slip hanger is the basic part of wellhead equipment, which is installed at the upper end of casing string to hang casing strings of each layer and seal the annular space between casings of each layer. As the main seal of slip type casing head, the performance of pack off seal directly affects the application range and normal use of casing head. In order to overcome the defects in the prior design, this invention provides a slip seal structure, which can meet the requirements of using slip casing heads under the working conditions of 15000PSI high pressure and PU temperature grade (-29℃~121℃).  The pack off seal structure of the present invention will have a very excellent application prospect.

  • JST, delivering your process safety
    JST, delivering your process safety
    • April 09, 2021

    Throughout industrial revolutions, sealing technology is the supportive key factor propelling industrial developments. Sealing failures can be hazardous or even disastrous. History has witnessed numerous tragedies and disasters similar to the Challenger Space Shuttle Explosion or Gulf of Mexico Oil Spill from inadequate sealing at critical moments. In the general trend of global industrial upgrading, JST undertakes the mission to fuel social development of mankind via sealing technology.  Every year, JST invests 6% of its annual turnover in research and experiments to bring forth innovation, upgrading sealing products to higher technical standards with stronger heat-resistance, stability, and durability in extreme conditions. With a dedicated team of talented technical professionals, and joint R&D centers with Guangdong University of Technology and others, JST develops high-end sealing technology for customers, upgrades customers’ industries and products and solves technical difficulties the whole industry is facing, propelling rapid industrial development. JST has a complete technical system, a material formulation laboratory, a comprehensive performance laboratory for high & low temperature and high pressure products, - 196 ℃ ultra-low temperature laboratory, equipped with a high and low temperature tensile testing machine, a material abrasion testing machine, a material immersion testing machine, a finite element analysis (FEA), and in combination with the company's PLM system, it can make deeper researches on rubber materials, PTFE composites and product performance. JST materials receive rigorous internal and thirty-party tests and have obtained NORSOK M-710 immersion test certificates by Element laboratory in UK, Alpine laboratory in US, and laboratory of China University of Petroleum, as well as RGD test certificate by BV and API 6A PR2 test certificate by DNV for sealing of various devices. JST has passed ISO9001 quality management system certification, API Q1 system certification and HSE system certification. JST is committed to innovation, and has developed over 40 patented products and counting, JST products are winning growing trust from customers. JST keeps increasing production capacity to meet the rising demand from customers. We have rubber seal production workshop, PTFE seal production workshop and tooling processing workshop. We have more optimized and advanced production processes, a higher-standard quality control system, a more accurate logistics control system, as well as a safer, healthier and more environment-friendly management system. The demand of customers is the driving force for JST to move forward. JST's products and services cover construction machinery, oil & gas drilling and stimulation, LNG, aerospace, nuclear & wind power, medical equipment and other in...

  • JST in research and experiments
    JST in research and experiments
    • April 09, 2021

    Thanks to Jarvis Huang and his engineering team for over 25 years in research and experiments to bring forth innovation, upgrading sealing products for harsh conditions in oil & gas.

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