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Wontech Factory Customized 6" inch P168 Symmetrix Concentric Overburden Drilling System DTH Pilot Bit with ring bit
Wontech Factory presents Customized 6" inch P168 Symmetrix Concentric Overburden Drilling System DTH Pilot Bit with Ring Bit Designed with precision in mind, this system is a complete game - changer for overburden drilling applications. The 6- inch size is ideal for getting a variety of projects done faster. Such facilities are custom and can be crafted to accommodate precise project specifications. DTH Pilot Bit Along with Ring Bit. The Wontech Factory's offering is a reliable and effective option for both large-scale mining and construction projects requiring efficient overburden drilling. Since this system provides a faster rate of drilling progress and quality results it is well suited for the demands of the drilling industry.
- Overview
- Related Products
Products Description
concentric system |
block system |
wing system |
When drilling starts,the ODEX reamer swings out and reams the pilot-hole wide enough for the casing tube to slide down behind the drill bit assembly.
When the required depth is reached,rotation is reversed carefully.where upon the reamer swings in,allowing the drill bit assemblyto be pulled up through the casing.
Casing tubes that are to be left in the drill hole should be sealed atthe bottom of the hole by means of cement grout or some other sealing agent.
Drilling continues to the desired depth in the bedrock using a conventional drill bit.
When starts drilling，weld casing tube with ring bit，then lock pilot bit with the ring bit so that the shoulder of pilot bit is perfectly matched with the casing shoe. When impact power transmits to pilot bit and ring bit, the system starts to break rock, bringing down casing tube.
When casing tube is installed until bedrock，reversely turn the pilot bit and pull out from the hole, keeping ring bit and casing tube stay in the hole.Anyway the ring bit and casing tube can be pulled out from the hole if doing grouting at the same time.
if need to drill a deeper hole when casing tube is stalled until bedrock，pull out pilot bit from the hole and change a conventional rock bit to continue to drill until desired depth is reached.
Model |
Design |
o.D.of Pilot Bit( mm ) |
W.T.of Pilot Bit(Kg) |
Compatible Shank |
P114WD35R-82 |
A |
92 |
4.6 |
DHD3.5 |
P127WD35R-93A |
B |
105 |
5.5 |
DHD3.5 |
P140WD4R-97A |
B |
116.5 |
11.35 |
COP44/DHD340 |
P140WD4R-115A |
B |
128 |
13 |
COP44/DHD340 |
P140TD40-115 |
A |
128 |
16.2 |
TD40 |
P146WD4R-110 |
A |
124 |
15 |
COP44/DHD340 |
P168WD5R-127A |
B |
141 |
21 |
COP54/DHD350 |
P168WD5R-140A |
B |
155 |
22 |
COP54/DHD350 |
P219WD6R-170A |
B |
191 |
43 |
COP64/DHD360 |
P219WD6R-190 |
A |
203 |
44.6 |
COP64/DHD360 |
P273WD8R-219 |
A |
241 |
76 |
COP84/DHD380 |
P273WD8R-240 |
A |
254 |
79.3 |
COP84/DHD380 |
P325WD8R-273A |
B |
292 |
108 |
COP84/DHD380 |
P324WD8R-282 |
A |
298 |
110 |
COP84/DHD380 |
Product Advantages
Application Cases
Performance Features
overburden casing system typically refers to a technique used in certain types of drilling operations, such as in mining or
geotechnical engineering. It involves the installation of a casing or pipe through overlying layers of soil, rock, or other
materials to provide support and stability during the drilling process.
Here's a general overview of how an overburden casing system works:
1.Purpose: The primary purpose of an overburden casing system is to maintain the stability of the drill hole while drilling
through loose or unstable materials, such as sand, gravel, or clay. It prevents the sides of the hole from collapsing and helps prevent the loss of drilling fluids or materials into the surrounding formations.
2.Casing Design: The casing used in an overburden system is typically a larger diameter pipe compared to the main drilling casing.It is designed to withstand the external pressure from the surrounding soil or rock and provide structural integrity to the drill hole. The casing is often made of steel or other strong materials.
3.Casing Installation: The overburden casing is installed by drilling a smaller pilot hole using a specialized drilling tool,
such as a down-the-hole (DTH) hammer or a rotary drilling rig. As the pilot hole is advanced, the casing is simultaneously
advanced into the ground. The casing may have cutting or drilling bits attached to its lower end to aid in the penetration of
the overlying materials.
4.Casing Advancement: Once the casing reaches the desired depth, drilling continues within the casing, while the overburden material is held back by the casing. This technique allows for stable drilling in loose or unconsolidated formations.Depending on the specific drilling method and equipment used, the casing may be advanced by rotation, percussive action, or a combination of both.
5.Grouting: In some cases, grouting or sealing materials may be injected into the annular space between the casing and the surrounding formation. This helps to further stabilize the overburden and prevent the ingress of water or other unwanted materials.
6.Main Casing: After the drilling through the overburden is complete, the main drilling casing is typically installed within
the overburden casing, extending further into the target formation. The main casing provides additional support and allows for the continuation of the drilling process into deeper layers.
geotechnical engineering. It involves the installation of a casing or pipe through overlying layers of soil, rock, or other
materials to provide support and stability during the drilling process.
Here's a general overview of how an overburden casing system works:
1.Purpose: The primary purpose of an overburden casing system is to maintain the stability of the drill hole while drilling
through loose or unstable materials, such as sand, gravel, or clay. It prevents the sides of the hole from collapsing and helps prevent the loss of drilling fluids or materials into the surrounding formations.
2.Casing Design: The casing used in an overburden system is typically a larger diameter pipe compared to the main drilling casing.It is designed to withstand the external pressure from the surrounding soil or rock and provide structural integrity to the drill hole. The casing is often made of steel or other strong materials.
3.Casing Installation: The overburden casing is installed by drilling a smaller pilot hole using a specialized drilling tool,
such as a down-the-hole (DTH) hammer or a rotary drilling rig. As the pilot hole is advanced, the casing is simultaneously
advanced into the ground. The casing may have cutting or drilling bits attached to its lower end to aid in the penetration of
the overlying materials.
4.Casing Advancement: Once the casing reaches the desired depth, drilling continues within the casing, while the overburden material is held back by the casing. This technique allows for stable drilling in loose or unconsolidated formations.Depending on the specific drilling method and equipment used, the casing may be advanced by rotation, percussive action, or a combination of both.
5.Grouting: In some cases, grouting or sealing materials may be injected into the annular space between the casing and the surrounding formation. This helps to further stabilize the overburden and prevent the ingress of water or other unwanted materials.
6.Main Casing: After the drilling through the overburden is complete, the main drilling casing is typically installed within
the overburden casing, extending further into the target formation. The main casing provides additional support and allows for the continuation of the drilling process into deeper layers.
Packaging
Company Profile
1、Technology-Based New Material Private Enterprise with Five Overseas Branches.2、Nearly 40000 Square Meter of Plant，More Than 800 Employees.3、Specialize in Providing Cutting Equipment and Consumables for Stone, Driling Tools for Foundation Piling.Water Well Drilling with Two Brand“TOOLSTAR”“WONTECH".
FAQ
Q:What kind of rock drilling tools can you provide?
A:We have an abundant product portfolio, covering down-the-hole(DTH) hammers and bits,top hammer tools casing systems,and related accessories.
Q:How about your delivery?
A:We have a quick delivery. There are five overseas warehouses in globe wide, which enable Wontech to deliver the goods in a short time.
Q:Do you provide tailored services?
A:of DTH Hammer,Wontech is working on promoting its own brand and also accepts the advice or suggestions from customers and improve the products. of DTH bits, special requirements on face design, button shapes color logo,and packaging are acceptable.
Q:Do you have the inspection procedures?
A:100% strict inspection and testing for every order before packing.
Q:Can l have a visit to vour factory before the order?
A:Sure,welcome to visit us.We are in Ningxiang.Changsha city,Hunan province.China
Q:How about your delivery?
A:We have a quick delivery. There are five overseas warehouses in globe wide, which enable Wontech to deliver the goods in a short time.
Q:Do you provide tailored services?
A:of DTH Hammer,Wontech is working on promoting its own brand and also accepts the advice or suggestions from customers and improve the products. of DTH bits, special requirements on face design, button shapes color logo,and packaging are acceptable.
Q:Do you have the inspection procedures?
A:100% strict inspection and testing for every order before packing.
Q:Can l have a visit to vour factory before the order?
A:Sure,welcome to visit us.We are in Ningxiang.Changsha city,Hunan province.China
