After theoretical analysis andseveral years test, that a new diamond cutter has been successfully developed and achieved goodeffect makes a breakthrough in above convent...

• 其特点是破碎岩石效率较高，对岩石的适应性较强，使用寿命高，钻头的导向性及工作稳定性较好，钻进效果与钻进质量明显提高。