HOD140 Eccentric Overburden Dth Hammer Drilling Equipment For Dimensional Stone Industry

Introduction of HOD140 eccentric overburden drilling equipment:

1. When drilling strats, the reamer swings out and reams the pilot-hole wide enough for the casing tube to slide down behind the drill bit assembly.

2. When the required depth is reached, rotation is reversed carefully, whereupon the reamer swings in, allowing the drill bit assembly to be pulled up through the casing.

3. Casing tubes that are to be left in the drill hole should be sealed at the bottom of the hole by means of cement grout or some other sealing agent.

4. Drilling continues to the desired depth in the bedrock using a conventional driling.

Technical data of HOD140 eccentric overburden drilling equipment:

Packaging of HOD140 eccentric overburden drilling tools:

Using ply-wooden cases and pallet for package to protect the products and avoid the damagement during transportation. Also we can customize package according to your special requests.

Shipping of HOD140 eccentric overburden drilling tools:

1. Sample order can be delivered by air or international express, such as DHL, UPS, Fedex etc.

2. Batch orders can be delivered by air, by truck, by railway or by sea

Tip: We can choose most favorable delivery ways for our customers.

mining drill bits

hammer drill bits for rock

HOD140 Eccentric Overburden Dth Hammer Drilling Equipment For Dimensional Stone Industry Images