coal bit

详情

1. Manufacturer of varies carbide coal bits 2. Dry-type & wet-type, thread connection type 3. long use life, competitive price Coal drill bit/ anchor shank coal bit/ coal bit: Applications: apply to the anchor-network support hole drilling in coal mine, hydraulic project. Etc. Characteristics: High wear resistance and impact-resistance toughness. To repeat repair & greaning are not necessary, long drill life. High efficiency could be promoted sharply in penetration of high-medium hard rock formation. Labour intensity could be reduced. Rock formation to be suitable t:f=***2 3 wings/ 2 wings Product description: The coal bits are mainly used in coal and mine drilling, have dry-type & wet-type. We can do different measures according to customer’s requirements. Colliery Drilling Tools Main Standard(mm) D H L M Thread joint *7 *4 *7 M*4×1.5 *7 *4 *7 M*2×1.*5 *8 *4 *0 M*2×1.*5 *9 *2 *8 M*4×1.5 *0 *0 *8 M*4×1.5 *2 *2 *2 M*4×1.5 *2 *6 *2 M*2×1.*5