China coal group to provide you with professional Drill Rod, Drill Bits Product information and Drill Rod, Drill Bits Parts information and Drill Rod, Drill Bits Other related products,You can view a large selection of Drill Rod, Drill Bits Product information,Can also browse Drill Rod, Drill Bits Related product information,tel: E7Xk68UFIN9w KAISHAN KG590 KG590H blast hole drill rig and borehole drilling rig for mining, You can get more details about from mobile site on 9a8g6YNqgiNl May 16, 2020 · Designed for dependable drilling in both soft and hard rock, the automation-ready Sandvik DR412i blasthole drill rig delivers high rotary power and feed force. Capable of drilling holes with a diameter of 216-311 mm (8.5-12.25 in) down to a maximum multi-pass depth of 75 m (246 ft), Sandvik DR412i can be fitted for both down-the-hole and rotary ... YvH6kfGZwRpq rule, open-pit and coal strip mines using larg e drills will drill presplit holes in diameter. Quarry and construction presplits are m uch smaller, generally ... 3O08JK7tuR4D
Get Price