Structural features: Featuring a variable-taper design with cone-to-cone sealing, the sealing surface is positioned close to the threads, minimizing the impact of the shoulder on sealing performance while ensuring insensitivity to bending and axial loads. This design allows for thread connections that can be used in the field without the need to apply thread compound, maintaining smooth make-up and break-out actions even after 10 cycles—no galling occurs. As a result, the seals offer enhanced reliability, making them ideal for meeting even stricter environmental standards on-site.

Performance Testing: It has successfully passed the performance verification test meeting the highest (Level 4) requirements of the international standard ISO 13679, with the maximum test temperature exceeding 180°C, a maximum dogleg severity of 20°/30m, and ensuring that the joint is as strong as the pipe body itself—achieving 100% joint compression efficiency.

Scope of application: Suitable for use in challenging and demanding environments such as deep wells and ultra-deep wells.