Changsha Tianhe Drilling Tools and Machinery Co.，Ltd., which is located in Hanpu Scientific and Educational Park, Wangcheng County, Changsha, Hunan, China, has become a specializing plant producing various drilling tools for soil and rock excavation projects. It is also a member unit of the council of China Drill Steel and Drilling Tool Association. It was established in November, 2002. Up to now, the total area is 45,000 square meters. The annual value is 50,000,000yuan. The producing capacity is 80,000,000yuan. The value of the company is 30,000,000yuan. The technical value of more than half of the products is higher than other companies in the same line in China. It has a long-term close technical cooperation with Changsha Mine Research Institute, Centre South University, Zhuzhou Cemented Carbide Group Co., Ltd. and some other research and production units. The quality management system has passed the certification of ISO 9001:2000.
There are three main series of products in our company: 1. The high, middle and low air pressure DTH hammers and their matched drilling bits. 2. Concentric and eccentric reaming drilling tools followed by casing drilling. 3. Drilling tools and parts matched with rock drill machine under hydraulic pressure. Our DTH drilling tools have most of varieties and specifications in the same line.