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Zuanshan Mining Machinery Co., Ltd

DTH Hammers

The optimum range of hole size for blast hole drilling with DTH is 90 mm to 254 mm (3 ½”–10″). Smaller blast holes are generally drilled using tophammer, and larger holes generally use rotary machines.

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DTH Drill Bits

Each bit is made from quality alloy steel, and has been precision machined to produce a perfect body, heat treated to the required hardness, given surface compression for fatigue resistance, and fitted with precision buttons.
Five basic designs are available: Convex, Flat front, SpeedBit, Concave, and RocketBit. These are designed for specific applications for all rock types, hardness and conditions.

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Hydraulic Drifter

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Professional Technical Support

Customer-centric, market-oriented
Can customize products according to the customer’s requirement

Drill bits – standard assortment

Flat front

Applications:
Hard and abrasive formations, all round.

Typical formations:
Granite, hard limestone, basalt.

SpeedBit

Applications:
Medium hard to hard and abrasive formations. For higher productivity.

Design feature:
Ballistic buttons in front.

Typical formations:
Granite, hard limestone, basalt.

Convex front, ballistic

Applications:
Soft to medium hard rock. Non abrasive formations. High penetration rate.

Typical formations:
Limestone, hard limestone, shale.

Concave front

Applications:
Medium hard to hard formations. Less abrasive, fractured formations. Excellent control over hole deviation.

Design feature:
HD – larger gauge buttons. DGR – double (overlapPing) gauge row. Only from 8″.

Typical formations:
Granite, hard limestone, basalt.

RocketBit

Applications:
Soft to medium hard formations. For exceptional productivity. Fractured rock.

Design feature:
Spherical buttons for hard and abrasive formations. Ballistic buttons for soft formations.

Typical formations:
Limestone, hard lime-stone.

Selecting the right bit

We has a comprehensive range of DTH drill bits to match all conceivable applications. Each bit is made from quality alloy steel, and has been precision machined to produce a perfect body, heat treated to the required hardness, given surface compression for fatigue resistance, and fitted with precision buttons.

Five basic designs are available: Convex, Flat front, SpeedBit, Concave, and RocketBit. These are designed for specific applications for all rock types, hardness and conditions.

Bit life and rate of penetration are the most important criteria in selecting the right bit for a particular application.

Selecting the right hammer

As a rule of thumb, the smallest hole diameter a DTH hammer can drill is its nominal size. A 4 inch hammer will drill a 4 inch (102 mm) hole. The limiting factor is the outside diameter of the hammer, because, as hole diameter reduces, airflow is restricted. Maximum hole size for production drilling is the nominal hammer size plus 1 inch, so for a 4 inch hammer the maximum hole size is 5 inch (127–130 mm).

Choosing the right hammer is largely determined by hole size and type of rock formation. Ideally, the size of the hammer should match the required hole dimension as closely as possible, leaving just enough space for cuttings to evacuate the hole.

Professional Technical Support

Customer-centric, market-oriented
Can customize products according to the customer’s requirement

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Superior Products / Hot-selling Products

We has a comprehensive range of DTH Hammers / DTH Drill Bits / Hydraulic Drifter

MANUFACTURING EXPERIENCE

Since established in 2012, has been committed to manufacturing and keep to stay abreast of the latest industrial technology.

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WORKING LIFE

95% or better than the world first class brand such as Atlas Copco, Sandvik, Robit, Boart Longyear, Mitsubishi, Mincon etc…

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QUALITY GUARANTEE

Free replacements will be provided once the failure confirmed caused by our product quality issue.

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APPLICATION

Suitable for drilling soft and medium and hard rock formations at a higher speed rate than competitor.

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STOCK

Stock available for some popular items if you own regular orders.

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SERVIE

24/7 service support & special design could be achieved.

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Any more questions? Feel free to write us a mail!

Zuanshan Mining Machinery Co., Ltd

sales@zuanshancompressor.com

Delivery Time

Zuanshan company’s principle is zero inventory, all the production based on purchase order from clients.
Production cycle, only need two weeks, and procurement of raw materials(Alloy steel+Tungsten carbide) also need about two weeks. So the whole delivery time need about 25-30 days.

Methods of shorten the delivery time

The quite simply the most efficent way to shorten the delvery time is send us your purchase plan in advance, we will buy raw materials according your purchasing plan. This can saves about two weeks.

Strictly Quality Control

Our quality management is vertical, controlled by the general manager directly, management quickly and efficiently.

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Zuanshan Mining Machinery Co., Ltd

10,000+

Cases served

20+

Years of experience

24/7

Availability & Support

100.000.000$

Earned for our clients