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Product Details
Double Casing Drilling Tools
Min.Order Quantity: 1 Piece/Pieces
Supply Ability: 100000 Piece/Pieces per Month
Port: Tianjin port/Shanghai port/Guangzhou port Shenzhen/Qingdao
Payment Terms: L/C,T/T,Western Union,MoneyGram,Paypal
Introduction
We are a professional and experienced integrated drill enterprise which engages in the design, research,development, manufacturing and marketing of different kinds of product in superior quality, competitive price and perfect service for more than 20 years
Product Description
More detail, welcome to send Inquiry or Email: [email protected]
| Features | Hardening treatment of the parts surface With longer operating life and excellent anti-wear properties Structural optimization Strengthen the structural Superior performance Smooth with high efficiency |
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| 技术参数 | ||||||||||
| Outer Dia(A) mm | Reamed Dia(B) mm | Inner Dia(C) mm | Thread(D) mm | Drill Rod Dia (E)mm | Drill Bit Dia (F)mm | Thread(G) | ||||
| 118 | 125 | 88 | 104.5 | 76 | 83 | R56 | ||||
| 133 | 140 | 108 | 122 | 76 | 102 | R56 | ||||
| 146 | 152 | 120 | 134 | 89 | 116 | R78 | ||||
| 168 | 172 | 133 | 146.5 | 114 | 128 | R83 | ||||
| 216 | 225 | 178 | 203 | 114 | 165 | R102 | ||||
| Order Guide:Outer Dia.(A)+Reamed Dia(B)+Inner Dia(C)+Thread(D)+Drill Rod Dia (E)+Drill Bit Dia(F)+Thread(G) | ||||||||||
| Structure | ||||||||||
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 | 1,Firstly, connect the crown opener bit and the external casing tube, the drill head of the rig impacts the advancing of the extemal casing tube, until the completion of the first tube. |
 | 2,The hammer connected with the drill rod. the hammer drill alongside the extemal casing tube until the completion of the first tube. |
 | 3,Connect the drill rod with the casing tube,the drill head of the rig push forward the external casing tube, the hammer impacts the drill rod forward until the external casing tube is into the desired depth |
 | 4,Drilling continues to the desired depth in the bedrock using a conventional drilling |
It can be widely used in drilling for grouting holes in projects such as cofferdam, foundation and geothermal well and etc. |
 | 1,Firstly, connect the crown opener bit and the outer casing tube, the drill head of the rig impacts the advancing of the outer casing tube, until the completion of the first tube. |
 | 2,The inner opener bit is connected with the drill rod, the drill head alongside the bore of the outer tube, until the completion of the first tube |
 | 3,Connect the drill rod and the tube the drill head of the rig push forward the external casing tube altogether with the drill rod until the external casing tube is into the desired depth |
 | 4,No need to add any casing tube in the base rock, only apply with the drill rod to push down to the desired depth |
More detail, welcome to send Inquiry or Email: [email protected]
| We can design and manufacture according to customer's requirements of the Bit Dia.,No.of air holes,carbide button shape and the face shape | |
| Our Bit Face Shape Selection | |
| Double Gauge Face——This kind of face shape is suitable for fast penetration rates in medium to hard rock formation.Designed for high air pressures and good resistance to steel wash step gauge bit.dth hammer drill bit / low air pressure tungsten carbide dth drill button bits | |
| Convex Face—For high penetration rates in soft to medium-hard with low to medium air pressures.It is the most resistance to steel wash, and may reduce the load and wear on the gauge buttons,but poor hole deviation control. | |
| Concave Face---The all-round application bit face specially for medium hard and homogenerous rock formations.Good hole deviation control and good flushing capacity. | |
| Flat Face---This kind of face shape is suitable for hard to very hard and abrasive rock formations in applications with high air pressures.Good penetration rates an resistance to steel wash. | |
Drop Center---For high penetration rates in soft to medium hard and fissured rock formations. Low to medium air pressures.Maximum hole deviation control.dth hammer drill bit / low air pressure tungsten carbide dth drill button bits | |
| Our Carbide Button Shape Selection | |
Spherical/Domed/Round Button are usually used as gauge buttons of DTH Bits, suitable for very abrasive and very hard formations. | |
Parabollic/Semi-Ballistic Button are usually used as gauge buttons and front buttons of DTH Bits,suitable for medium abrasive and hard formations. | |
Ballistic Button are usually used as front buttons of DTH Bits, suitable for medium abrasive and medium hard formations. They also can be used as gauge buttons if the rock is soft. | |
Conical/Cone/Sharp Button are usually used as front buttons of DTH Bits for soft formations where fast penetration rates are possible and button breakage is minimal. |
The information you may like to know before order:
1. Methods of Payment:
T/T (Telegraphic Transfer) or Western Union or L/C at sight
2. Handling time for an order
Within 10 days supplied from stock
3. Shipping way
Sample order: we suggest Courier express like DHL/UPS/TNT/FEDEX or by air
Bulk order: we suggest by air or by sea.
4. Quality Control
We have our own experienced QC.
There will be strict inspection and testing for every order before shipping out.
5. After Sale Services:
a. Our sales team will response for your question within 24 hours (Holidays Excluded)
b. Technical Support will be available in any time
c. Free replacement will provide once the failure confirmed caused by our product quality
Frequently asked questions:
1. How to order the products?
Send the inquiry with detail item description or with Model number.
2. How about the common packing?
If there is no packing demand, we will take it as sea-way packing.
3. Can I expect a quality products?
Yes. All our activities are accredited to ISO 9001:2008 and API, both in products and services, at the same time, mature production technology ensuring the quality satisfy international request.
4. How to check the product are the exact one you want?
If possible, please attach one reference picture to avoid any misunderstanding or any links from our website for we get a better understanding.
Our dth drill bits advantages:
1.High quality.
2.Competitive price:Cheap price because of direct factory price.
3.Problems solve ability:This ability comes from rich experiences of drill bits industry.
4.Fast delivery time:usually it takes 25 days for production.only 2 or 3 days if we have stock of your request size.
5.Best quality control:We have our own experienced QC team,there will be strict inspection and testing for every order before shipping out.
6.OEM,ODM service:your own request about product will be served well.
7.Best after service:We will go to your place to check and solve the problems if there
More detail, welcome to send Inquiry or Email: [email protected]