3 1/2" mining machinery parts high quality air flush Carbide drag bit

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Price:RUB 3,032.72 - RUB 4,928.17
Price in USD:Details


Product Overview


3 1/2" mining machinery parts high quality air flush Carbide drag bit



Product Description

Sinodrills drag bits features:

1, A solid one piece heat treated, 4140 alloy steel body for bit strength & durability;

2, CNC threaded machining for proper installation &use;

3, Forgings are milled to better seat the carbide inserts.

4, Select tungsten carbide inserts 5.5mm thick are standard.

5, Relief is hand ground behind carbide inserts for maximum performance.


3 wings air flush step drag bits are one piece construction of alloy steel forged or cast with Tungsten Carbide cutting tips and gauge sides to ensure longer life. This step drag bits have 3 wings and 9 air flushing holes. Its wings distribute in the body of bit equably and the angle between each wing is 120 degree. Size of their 3 steps in the wing gradually becomes small, which can increase penetration ability and propulsive force. More flushing hole can improve capability of debris flushing .



3 Wings air flush step drag bit
Diameter Thread
3 3/4 inch 95.3mm 2 inch API IF Box


Note: The diameter and thread showed as above are usual size, other sizes are available upon request.


 air flush step drag bit .JPG



Packaging & Shipping

 Packing : Drag bits will pack in cardboard and plywood case.

Shipping : Drag bits will ship by sea , by air , by Express , etc .


3 1/2" mining machinery parts high quality air flush Carbide drag bit

Our Services


1. OEM & ODM , as your request . 

2. Best quality control : we have our own experienced QC team and the third party test .

3.Quick response .

4.Quick delivery .

5.Best after sevice .



Sinodrills drilling bits water well

Company Information

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China supplier 3 blades water well drilling step tungsten carbide drag bit

Q1: Are you a manufacturer?

A1: Yes, we own 3 plants to manufacture various drilling products, including self-drilling anchoring tools, DTH drilling tools and TH (top hammer) drilling tools. Meanwhile, for some items we do not produce in our own plants, we are authorized distributors by some brands, like G brand of TH (top hammer) drill rods. So we are a one-stop supplier of full range of rock drilling products.


Q2: What qualifications do you have?

A2: Till 2016, we have following qualifications:

1)      ISO 9001:2008 management system;

2)      3AA2 credit rating by Dun & Bradstreet;

3)      Honoring Contract and Keeping Promise Enterprise by AIC.

4)      EC examination certificate for self-drilling anchor bars.

5)      2 invention patents & 6 utility patents.


Q3: Where did you export and what was your annual export amount?

A3: Till 2016 we have exported to 84 countries and our average annual export amount within recent 3 years is 11 million USD.


Q4: What kind of payment terms do you offer and what is your best payment terms?

A4: We offer different payment terms, including T/T, D/A, D/P, L/C and O/A, etc. Our best payment terms is 120 days after shipping date for our distributors and sole distributors.


Q5:Do you offer warranty on your products?

A5: Yes, for different products we offer different warranty that cover all manufacturing defects in materials and workmanship. The longest period of warranty is 2 years after shipping date.


Q6: Do you offer OEM service?

Q6: Yes, we can offer OEM service if you have regular requirement.

Contact Us


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