273-DHD380 Eccentric Drill Bits Used In Water Well Drilling
- Product Description
- 1 Applications: Ore, rock,mining or welling drilling
- 2 Processing type: Forging
- 3 Color: As request
- 4 Advantage: High-efficiency
- 5 DTH hammer size: 8 inch
- 6 Face Shape: Flat, Concave & Covex face
- 7 Carbide button shape: Parabolic, Ballistic & Domed
- 8 Material: Tungsten carbide and hard alloy steel
Eccentric casing System
Hardening treatment of the part’s surface：with longer operating life and excellent anti-wear properties.
Structural optimization：Strengthen the structural strength, easy to operate
Superior performance：Stable and reliable performance, high drilling speed
Working Principle of Drill:
1.When start drilling , the reamer swings out and reams the pilot-hole wide enough for the casing tube to slide down behind the drill bit assembly.
2.When the required depth is reached, rotation is reversed carefully, whereupon the reamer swings in. Allowing the drill bit assembly to be pulled up through the casing.
3.Casing tubes that are to be left in the drill hole should be sealed at the bottom of the hole by means of cement grout or some other sealing agent.
4.Drilling continues to the desired depth in the bedrock using a conventional drilling.
Q:How can I know how much I should pay the delivery charge?
A:When you place an order, we will calculate the approximate gross weight, then according to the current Airfreight rate or Ocean Freight rate and add Chinese customs formalities & documents charge we get the final charges. We will let you know and print it in the Proforma Invoice of your order.
Q:What can you should do if your products can not run well? Whom do we contact if we get poor performance?
A:If our products can not run well, firstly, please check whether the installation is right? Then please check whether there is problem with the machine? Third is whether your workers were operating the machine in wrong way? After get rid of these possibility then it’s the problem of our products. Under such situation, please ask your technical man to guide the running of machine. Otherwise continue the running according to your experience or uninstall our products and change to other manufacture’s products temporarily.
Q:I want to be your agent, what is the conditions?
A:If you want to be our agent, the good capability of marketing is necessary, the other items we can settle down by negotiation.
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