Factory direct sales 168-DHD350 high pressure eccentric drill bit
- 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: 5 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:I don’t see any prices on your website. Can you tell me why?
A:There are so much products with different specification concerned, so there is no necessary for us to put our price list on the website. We always send the offer according to our customers’ detailed enquiry!
Q:Do you have office or representative or agent in our country?
A:We have no exclusive agent outside, but we have clients in many countries, We will find a convenient way for you to get our products.
Q:What is the minimum quantity we should buy?
A:For sample purpose we don’t mind how much you buy, we will send the samples by courier(DHL, TNT, UPS, EMS, etc). For order it should be over USD1000.00 or the total weight should reach 45kgs(requested by Air Line Companies, otherwise the Airfreight is double or more of usual price).
Q:As I know many companies supply free samples, do you offer free samples?
A:We don’t offer free samples, according to our year of experience we think when people get the samples by paying they will cherish what they get. Although the quantity of sample is small however its cost is higher than normal production.
Q:What is your mode of payment?
A:For Air Cargo the payment should be T/T(Telegraphic Transfer through bank) of total amount before shipment, for Sea Cargo other terms to be negotiated.
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