Professional China Dth Button Bits - Down the hole dth sd mission 6” hammer and bit price – TDS

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Professional China Dth Button Bits - Down the hole dth sd mission 6” hammer and bit price – TDS Detail:

Product overviewThe 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.

In other applications, like foundation drilling, DTH hammers can be used with single bit in hole sizes up to . 750 mm (30″). With multiple hammer units CD (Cluster drills) drill holes up to 70″ or 1778 mm.

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.

Specification
Model
Thread Connection
OD(mm)
Rec.Hole Size
Shank Style
Working Pressure(Bar)
CD35
API 2 3/8″ Reg
φ82mm
φ90-φ105

DHD3.5

CD35
1.0-1.5Mpa
CD45
API 2 3/8″ Reg
φ99mm
φ110-φ135

Cop44

DHD340
CD45
1.0-2.5Mpa
CSD4
API 2 3/8″ Reg
φ99mm
φ110-φ135

SD4

CSD4
1.0-2.5Mpa
CQL40
API 2 3/8″ Reg
φ99mm
φ110-φ135

QL40

CQL40
1.0-2.5Mpa
CD55

API 2 3/8″ Reg

API 3 1/2″ Reg
φ125mm
φ135-φ155

Cop54

DHD350R
CD55
1.0-2.5Mpa
CSD5
API 3 1/2″ Reg
φ125mm
φ135-φ155

SD5

CSD5
1.0-2.5Mpa
CQL50
API 3 1/2″ Reg
φ125mm
φ135-φ155

Cop54

QL50
CQL50
1.0-2.5Mpa
CD65
API 3 1/2″ Reg
φ148mm
φ155-φ190

Cop64

DHD360
CD65
1.0-2.5Mpa
CSD6
API 3 1/2″ Reg
φ148mm
φ155-φ190

SD6

CSD6
1.0-2.5Mpa
CQL60
API 3 1/2″ Reg
φ148mm
φ155-φ190

Cop64

QL60
CQL60
1.0-2.5Mpa
CD85
API 4 1/2″ Reg
φ185mm
φ195-φ254

Cop84

DHD380
CD85
1.0-2.5Mpa
CSD85
API 4 1/2″ Reg
φ185mm
φ195-φ254

SD8

CSD8
1.0-2.5Mpa
CQL80
API 4 1/2″ Reg
φ185mm
φ195-φ254

QL80

CQL80
1.0-2.5Mpa
CSD10

API 4 1/2″ Reg

API 5 1/2″ Reg
API 6 5/8″ Reg
φ225mm
φ254-φ311

SD10

CSD10
1.0-2.5Mpa
CN100
API 6 5/8″ Reg
φ225mm
φ254-φ311

NUMA100

CN100
1.0-2.5Mpa
CSD12
API 6 5/8″ Reg
φ275mm
φ305-φ445

SD12

CSD12
1.0-2.5Mpa
Appllication
888888888
                              Dth drilling                                                                            Water well drilling
Packing

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Our merchandise are broadly identified and trusted by end users and can satisfy continually developing economic and social requires for Professional China Dth Button Bits - Down the hole dth sd mission 6” hammer and bit price – TDS , The product will supply to all over the world, such as: French, United States, Peru, Please really feel free to send us your requirements and we'll respond to you asap. We have got a professional engineering group to serve for your just about every detailed needs. Cost-free samples could be sent for you personally to understand much more information. In an effort to meet your requires, please really feel free to make contact with us. You may send us emails and contact us directly. Moreover, we welcome visits to our factory from around the globe for much better recognizing of our organization. nd items. In our trade with merchants of numerous countries, we usually adhere for the principle of equality and mutual benefit. It is actually our hope to market, by joint efforts, each trade and friendship to our mutual advantage. We look forward to getting your inquiries.
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