High quality HD475-475mm dth hammer and bits, big hole down the hole driling

Introduction of HD475-475mm dth hammer:

HD475-475mm dth hammer are designed to operate efficiently at high air pressures pressures, using QL series bits.

It is a kind of valveless high air pressure dth hammer with foot valve.

It is widely applicated in water well and geothermal drilling, mining, quarrying, dimensional stone industry, construction, oil and gas, and mineral exploration.

Technical data of HD475-475mm hammer:

Feature of HD475-475mm dth hammer:

1. Using the latest rock drilling theory, optimizing the inside structure and the size of the air distribution, to make the DTH Hammer obtain the optimal energy transfer and make it achieve faster drilling speed and lower air consumption.

2. For such projects as the drill bit break, retrieving very difficult, we specially designed a safe and reliable anti-shedding device for the bit.

3. The check valve can be replaced to the one with bigger air controlling hole to provide more efficient cuttings discharge.

4. Thetop sub and the drive chuck have special thread, which can achieve an easier disassemble.

Packaging of HD475-475mm dth hammer:

1. Internal package: by carton box with foam, one pc dth hammer per carbox

2. External package: by wooden box, one pc dth hammer per wooden box

Note: Round-sealed package can prevent damage during delivery.

Shipping of HD475-475mm dth hammer:

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.