1.high quality materials
2. scientific forging
4.safty and economy
1.Safe and easy to operate,
2.Best product quality control from cutting edge forging process to product completion.
3.Durable with minimal maintenance
4.High efficiency and reliable
Product Specification / Models
Working Pressure (Mpa) 0.4-0.63
Cylinder Dia. u00d7Stroke (mm) u00d7 70
Impact Energy (J) 65
Impact Frequency (Hz) 31
Air Consumption (L/S) 67
Dia of Hole (mm) 34-42
Depth (m) 5
Application / Models
1.widely used in coal, metallurgy, railway, transportion,ore
2.water conservancy, infrastructure and defense engineering in the level of all kinds of rocks,
The rock drill is used for rock drilling, blasting holes and other drilling worksin the quarries, small coal mines and other constructions
HARGRAND (Former: BAOQI) was specialized in producing drilling tools and DTH TOOLS. It is located in Yanjiao National High-Tech Development area at Hebei Province which is 20 kilometers away from Beijing Capital airport, and 170 kilometers to Tianjin port. Some important logistics parks are also setting around HARGRAND's factory.
HARGRAND provided a whole set of drilling tools,drill mud,drill rigs,drilling equipment,DTH tools,rock drill which include Diamond Bits, PDC Bits, T.C bits,DTH Bits,Drill Rigs,Drill Mud,Pneumatic Rock Drill,DTH Hammmer,Inclinometer, Casing Shoes, Reamers, Core Barrel Assembly and Accessories, Drill Rods, Casing and other drilling tools. All these products are mating with Chinese standard(P75, P91, P110, S59, S75, S95), "C" series standard , and special standard(base on customers' requitements).
HARGRAND has many senior engineers and drilling technicists to ensure the producing, trouble-shooting and after-sale service. With over 20 years of producing expertise, HARGRAND provided high quality and utility drilling tools to worldwide market. There are 60% of the products to be sold to Mongolia, Russia, Kazakhstan, Vietnam, Iran, and Australia. In 2008, HARGRAND passed the quality management system certification (ISO 9001:2000).