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Product Description

1. When drilling starts, 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, where upon 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 drilling.

Company Introduction

Changsha ENYU Engineering Equipments Co.，Ltd. is a professional company engaged in the development, manufacture and export of engineering equipment and accessories.

Our main products includes DTH hammers, DTH bits, thread bits, opener bits, drill pipes, tapered bits and diamond core bits etc, widely used in mining, quarrying, tunneling as well as other similar heavy industries.

All the products are with the best quality in Asia, and customers can get a lower price from our company.

Thanks to the above advantages, we have established long term business relationships with many customers from all over the world, especially from Russia, Spain, France, Chile, Australia, Canada, Brazil and South Africa and so on.

Reasonable in price, superior in quality, timely in delivery, flexible in trade, we serve clients whole-heartedly.