Changsha Friend Industrial Co.,Ltd was registered in 2005. It is a famous privately operated enterprise specialized in researching and manufacturing rock drilling equipment and pneumatic tools. The company has rich scientific research and production experience. It produces high quality rock drilling products by using high quality raw material, utilizing advanced craft technology and imposing strict quality inspection. 
 
we are equipped with wide range of advanced equipment required for manufacturing rock drilling machine and pneumatic tools. We have designed and manufactured the following products: the most advanced high air pressure DTH hammer in China, various kinds of DTH bits, eccentric drilling equipment, symmetric drilling equipment,casing System,various kinds of threaded drilling bits,reverse circulation hammers and bits,shank adapters and coupling sleeves,new-style wells geothermal drilling rig,open-air blasthole drilling rig,all kinds of tool joints and drill pipes and spare parts for drill rig.
 
For the rich scientific quality management system, we have obtained the qualified certificate of ISO9001 and ISO14001 etc.We own the international latest technologies equipments, skilled workers and professional design capability, impeccable production technology.