tapered cup nut
... tapered coupling 带锥度的螺纹连接 tapered cup nut 锥形螺帽 tapered drill collar string 塔式钻铤组合 ...
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根据权利要求1或2所述的金属塑料复合螺帽，其特征在于所述金属嵌件一端部的内表面为锥形的密封面。
The metal-plastic composite nut, according to Claim 1 and 2, is characterized in that the inner surface at one end of metal insert is cone-shaped sealing surface.
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