Hot sale Factory Nw Casing - Down the hole dth sd mission 6” hammer and bit price – TDS
Hot sale Factory Nw Casing - Down the hole dth sd mission 6” hammer and bit price – TDS Detail:
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.
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.
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 |
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 |
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 |
1.0-2.5Mpa |
CD65 | API 3 1/2″ Reg | φ148mm | φ155-φ190 |
Cop64 DHD360 |
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 |
1.0-2.5Mpa |
CD85 | API 4 1/2″ Reg | φ185mm | φ195-φ254 |
Cop84 DHD380 |
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 |
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 |
Dth drilling Water well drilling
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All we do is often involved with our tenet " Purchaser to start with, Rely on initially, devoting over the food stuff packaging and environmental defense for Hot sale Factory Nw Casing - Down the hole dth sd mission 6” hammer and bit price – TDS , The product will supply to all over the world, such as: Slovak Republic, Guyana, Indonesia, To let customers be more confident in us and get the most comfortable service, we run our company with honesty, sincerity and best quality . We firmly believe that it is our pleasure to help customers to run their business more successfully, and that our experienced advice and service can lead to more suitable choice for the customers.
By Sandy from Slovakia - 2018.09.08 17:09
The factory technical staff not only have high level of technology, their English level is also very good, this is a great help to technology communication.
By Martha from New Orleans - 2017.06.29 18:55