●可选IADC编码437、517、537、617、627、637适用于各种岩石硬度的地层。
● The optional IADC codes 437, 517, 537, 617, 627 and 637 are suitable for various rock hardness formations. 
●采用滑动轴承复合密封结构，经济耐用。
● Sliding bearing composite sealing structure, economical and durable.
●全掌背合金镶齿强化，防止水平钻进过程中岩体对掌背的过度磨损。
● The alloy teeth of full palmar back are strengthened to prevent excessive wear of rock mass to palmar back during horizontal drilling. 
●针对水平或定向施工过程中，掌片掌尖易磨损的特点，我们在掌尖边缘大量堆焊 高耐磨合金材料，比普通牙轮具有更好的保护能力。减少由于掌尖过早磨损造成 的轴承裸露与损坏。
● In view of the horizontal or directional construction process, the palm tip is easy to wear, we weld a large number of high wear resistant alloy material in the palm tip edge, than the ordinary roller has a better protection capacity.Reduce bearing exposure and damage due to premature wear of the palm tip. 
●可根据客户要求定制生产。
● customized production according to customer requirements |
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