Shandong China Coal Group Drilling Machine Branch

Roof bolter is a key equipment in the bolt support project. The speed and effect of the support are closely related to the quality of the support. Roof bolter can improve the efficiency of constructio

1. The function of the cooling system of the water well drilling rig When the engine of the water well drilling rig is working, a large amount of heat is generated due to fuel combustion and friction

Gasoline rock drills are mainly used for pavement crushing, wall demolition, railway tamping, stone crushing, cement, concrete and frozen soil crushing. Gasoline rock drills are easy to operate, save

According to the relevant provisions of the "Measures for Evaluation of Scientific and Technological SMEs" (Guokefazheng [2017] No. 115) and the Provincial Department of Science and Technology "Notice

Air leg rock drill operation will have different situations during operation, so how to avoid unnecessary trouble and carry out construction safely, which of course requires the operator to pay more a

In order to help the innovation and development of foreign trade enterprises in the city, and cohesion to jointly promote the high-quality development of cross-border trade in the city, on the afterno