Specifications

1. Martillo de Fondo DTH
2.Efficient energy transfer
3.Faster drilling speed
4.Lower oil consumption
5.Longer life

Martillo en Fondo DTH de 8 pulgadas

High Air Pressure DTH Hammer with foot valve

It is a kind of valveless high air pressure DTH Hammer with foot valve.

It has the following advantages:

1. Valveless air distribution. More reliable.

2. Simple design of the piston, long life.

3. More efficient energy transfer, faster drilling speed, lower air consumption and lower oil consumption.

4. Fewer internal parts, simple structure, longer life, less failure and easier to maintain because all the parts are heat treated.

5. Easy to disassemble because the top sub, the drive chuck and the external cylinder are connected by multi-step thread.

Example 1:

ND55

N---New Diamond

D---DHD Bit Shank

5---5hammer

5---The Fifth Generation Hammer

Example2:

NQL4

N------New Diamond

QL4---QL40 Bit Shank

8" Martillo de Fondo DTH

Style	Length (Without Bit)	Weight (Without Bit)	External Diameter	Bit Shank	Hole Range	Connection Thread
ND85	1492mm	188.00Kg	180mm	Cop84/ DHD380	195-254	API 3 1/2"Reg
NSD8	1463mm	192.00Kg	180mm	SD8	195-254	API 4 1/2"Reg
NQL8	1465mm	182.00Kg	180mm	QL80	195-254	API 4 1/2"Reg

Before quotation, below information needed:

1. What kind of hole diamater will you drill?

2. What depth will you drill?

3. What kind of rocks you need to drill?

Delivery Time: 2 to 3 days after payment received if have stocks

7 to 15 days for production after payment received if no stocks

Payment: T/T in advance, L/C at sight

Shipping: By air or by sea

Quality Control: Make sure the best quality of every products before shipping out

8 Inch High Air Pressure DTH Hammer