目前，我国钻进硬岩层方法主要是采用钢粒钻进，每年消耗大量钢砂钻头。到目前为止，钢砂钻头的制造都采用无缝钢管加工。为了解决制造钢砂钻头所用材料的来源问题，张家口探矿机械厂、首钢钢铁研究所、地质科学院勘探技术研究所和北京、辽宁等局、队共同协作，以普通低合金钢（初 At present, China’s method of drilling into hard rock formations mainly uses steel grains to drill and consumes a large number of steel sand drills each year. So far, the manufacture of steel sand bits has been processed with seamless steel tubes. In order to solve the problem of the source of the materials used in the manufacture of steel sand bits, the Zhangjiakou Prospecting Machinery Plant, the Shougang Iron and Steel Research Institute, the Exploration Technology Research Institute of the Academy of Geological Sciences, and the Beijing and Liaoning Bureaus and teams worked together to form ordinary low alloy steels.