但是，空气锤、特别是配套冲击钻头断脱导致的井下事故时有发生，影响因素极为复杂。
But the matching impact bits often dropped off from the pneumatic hammers and led the well accident caused by complex factors.
本厂主要产品有：各种起钉器、凿、锉、园艺工具、电瓶夹、铲、冲击钻头、撬棍、千斤顶支架、雕刻刀等。
The main product we have is: all kinds of wrecking bar big file and rasp garden tool battery terminal various bolsters pound at the avger pry the stich jack engraving knife etc.
冲切成槽薄壁混凝土防渗墙施工技术是在原冲击成槽建造防渗墙的基础上，对冲击钻头和施工工艺加以改进，用扁钻头代替十字钻头，用正反两种循环系统进行泥浆循环的一种新防渗墙施工方法。
The present technique is a new thin cutoff wall construction method by modifying the original method as to use flat drill bit instead of cross bit and adopt positive and negative circulating system.
导向部分、心轴、校准轧辊、刀片、倒盘、冲击钻机的衬垫、钻机钻头、校准衬套、拉模夹具、剪刀、高尔夫鞋的衬垫。
Guiding parts, mandrels, calibration rolls, knives, plate cutters, inserts for percussion drills, masonry drill tips, calibration bushes, drawing cheeks, shearing knives, inserts for golfer shoes.
旋转冲击钻井技术依靠冲击器产生冲击载荷并作用在钻头上来破碎岩石。该技术能够有效提高硬地层钻井速度，能够防止硬地层及复杂地层钻井中的井斜问题。
The rotary percussion drilling technology have the advantage to raise the hard rock well drilling speed effectively, prevent the borehole deviation in the hard rock or the complicated geologic strata.
旋转冲击钻井技术依靠冲击器产生冲击载荷并作用在钻头上来破碎岩石。该技术能够有效提高硬地层钻井速度，能够防止硬地层及复杂地层钻井中的井斜问题。
The rotary percussion drilling technology have the advantage to raise the hard rock well drilling speed effectively, prevent the borehole deviation in the hard rock or the complicated geologic strata.
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