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    Hot sale ? 75 diamond bit, three wing concave PDC composite bit, quality assurance.
    share  | 19-06-14release views ID：29821
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Hot sale ? 75 diamond bit, three wing concave PDC composite bit, quality assurance.
  • Address：沧州市
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热销Φ75金刚石钻头三翼内凹PDC复合片钻头，质量保证。

牙轮切削结构是一个牙轮钻头的最主要的特点，经过不断的科学研究，现在又许多种不同的牙轮构造形状，常见的有勺形、尖卵形、圆锥形、楔形、边楔形、平头形、锥勺形、偏顶勺形。
（2）牙轮上的牙齿一般分两种模式：镶齿、钢齿。现在，多用硬质合金齿，它的硬度和耐磨性能都比钢齿高，当然价格也要贵一些。


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