宜亿8 1/2" 牙轮掌片
钻头尺寸 8 1/2"(215.9MM)
617型
应用
适用于桩基施工的牙轮钻头芯筒
特点 1. 增强耐磨规保护，增加工作寿命。
2.耐高温橡胶密封轴承。
3.加大轮体，镶件全覆盖，使用寿命更长。 14mm锥形刀片，耐磨性更高。
4、适用岩石硬度：≥100Mpa
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