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| IADC Encoding | Applicable formation | Recommended parameters | |
| drill pressureWOB KN/mm | RPM (r/min) | ||
| 116/117 | Low compressive stength,high drill-ability and extremely soft formation,like soft shale,clay,salt rock, etc | 0.35-0.90 | 180-80 |
| 126/127 | Low compressive strength,high drill-ability and soft formation, like shale,clay, salt rock, and soft limestone etc. | 0.35-1.00 | 180-80 |
| 135/137 | Soft to medium soft with low compressive strength or soft with hard interlayer, like anhydrite,soft limestone,sandstine,etc. | 0.35-1.05 | 130-60 |
| 216/217/237 | Medium hard formation with relatively high compressive strength and hard interlayer,like hard shale,sandstone. Limestone,etc. | 0.5-1.20 | 100-50 |
| commodity | Dimensions | IADC | threaded connection | drill pressure WOB KN/mm | Rpm | Applicable starata |
| Three-cone bit | 12 1/4 311.1mm | 137 | 6 5/8 | 0.35-1.05 | 130-60 | Low compre |
First of all, we would like to let you know that we are one of the manufacturers located in Hejian City, Hebei Province, for more than 20 years. We have so many customers from all over the world, and instead of winning the choice of customers at the lowest price, we rely on quality to do business for each customer. We know that business is not easy and it is difficult to get a customer, so we must serve sincerely. So remember our promise, the benefits you pay for. We will honestly provide you with the same quality of goods.
1 Q: Are you manufacturing?
Yes, we have been for over 20 years.
2 Q: Where are you located?
We are located in Hejian City, Cangzhou City, Hebei Province
Q: What are your main products?
A: Our main products are TCI three-hole bits, steel tooth three-hole bits, single cone bits, HDD hole cutters, PDC bits and PDC drag bits.
Q: What is the minimum order quantity?
A: The minimum order quantity is 1 piece, but if you only want to obtain sample test quality, we can provide you.
Q: How many days is your delivery time?
A: If we have it in stock, we can deliver it within 7 days, and if we need to produce according to your requirements, we will negotiate with you.
If you want to know more questions, please feel free to




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Step 1
Payment and order readiness
Minimum order: 1 Units
Payment terms, specifications, and order details are confirmed before preparation begins.
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Step 2
Preparation
3 days
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Step 3
Packaging and dispatch
Packaging details are available on request.
Final packing, freight, and delivery dates are confirmed before dispatch.
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