第四代螺纹技术——螺塞反角螺纹设计，更易于安装，对棒抱紧力更强，进一步减少钉头体积。
Generation 4 Clousure Technology—A reverse-angle set screw designed to thread easier, hold stronger, and reduce the implant even.
他们的设计能够承受200磅的工作压力，带NPT螺纹，而不是空气压缩机的服务。
They are all designed for working pressure of 200 LBS with NPT threads, not for air compressor service.
科瑞电器厂是集设计、生产、研发各类电加热器、螺纹元件、机筒、芯轴的专业厂家。
Corey Electrical Appliance factory is a set of design, production, research and development all kinds of electric heaters, screw elements, barrel, Mandrel specialized factory.
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