●可選IADC編碼437、517、537、617、627、637適用于各種巖石硬度的地層。
● The optional IADC codes 437, 517, 537, 617, 627 and 637 are suitable for various rock hardness formations. 
●采用滑動軸承復合密封結(jié)構(gòu)，經(jīng)濟耐用。
● Sliding bearing composite sealing structure, economical and durable.
●全掌背合金鑲齒強化，防止水平鉆進過程中巖體對掌背的過度磨損。
● The alloy teeth of full palmar back are strengthened to prevent excessive wear of rock mass to palmar back during horizontal drilling. 
●針對水平或定向施工過程中，掌片掌尖易磨損的特點，我們在掌尖邊緣大量堆焊 高耐磨合金材料，比普通牙輪具有更好的保護能力。減少由于掌尖過早磨損造成 的軸承裸露與損壞。
● 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. 
●可根據(jù)客戶要求定制生產(chǎn)。
● customized production according to customer requirements |
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