China OEM Casing Advancing Systems - Down the hole dth sd mission 6” hammer and bit price – TDS

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We've our have sales staff, style and design staff, technical crew, QC team and package workforce. We've strict excellent control procedures for each system. Also, all of our workers are experienced in printing field for Dth Rock Drilling Rig Manufacturers, Drifter Drill Rod Suppliers, T45 Shank Adapter, We warmly welcome all perspective inquiries from home and abroad to cooperate with us, and look forward to your correspondence.
China OEM Casing Advancing Systems - 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
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                              Dth drilling                                                                            Water well drilling
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We depend on sturdy technical force and continually create sophisticated technologies to meet the demand of China OEM Casing Advancing Systems - Down the hole dth sd mission 6” hammer and bit price – TDS , The product will supply to all over the world, such as: Israel, Iceland, luzern, Our staffs are adhering to the "Integrity-based and Interactive Development" spirit, and the tenet of "First-class Quality with Excellent Service". According to the needs of every customer, we give customized & personalised services to help customers achieve their goals successfully. Welcome clients from home and abroad to call and inquire!
  • Staff is skilled, well-equipped, process is specification, products meet the requirements and delivery is guaranteed, a best partner!
    5 Stars By Dominic from Germany - 2018.09.16 11:31
    As a veteran of this industry, we can say that the company can be a leader in the industry, select them is right.
    5 Stars By Karen from Armenia - 2018.10.01 14:14
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