Application for cemented carbide tip inserts: Fixed on the drill bit by brazing, suitable for soft, medidum hard and hard rock formations drilling.
Two impotant things for brazing:
*Clean surface: Not only means keep the surface cleance, but also need to check the carburization/decarburization carefully.
*Size control: Good size control is also important, size need to be even from the top to the bottom of the tips (within +/- 0.1 mm).
Our tips was done by HIP sintering, it provide extra 30% on bending strength compare to normal quality, which means our tips will be strong enough when meet heavy impact. Also, it will have longer tool life (better wear resistance) for you to use our tips.
*Sinter-HIP is a method of thermal consolidation for cemented carbide wherein the simultaneous application of heat and pressure fully consolidates the carbide during the sintering process.
It is very important to select the right grade to match the using purpose, need to find the perfect balance between hardness and bending strength, so we have to consider the physical properties of the processing object, also the working condition for tools, like running speed, impact. 
Grade list of cemented carbide octagon tips:
| Grade | ISO Grade | Density (g/cm3) | Hardness HRA (ISO3738) | Grain Size | Bending Strength(N/mm2) | Main Using purpose |
| EST03G | K20 | 15.0 | 90.3 | medium | 3000 | Excellent impact and wear resistance, the first choice for high aire pressure DTH drill bits. |
| EST06G | K20 | 15.0 | 90.2 | medium | 2700 | Very good impact and wear resistance, suitable for meidum and low air pressure DTH drill bits and also threaded drill bits. |
| EST07G | K20 | 14.9 | 89.2 | Coarse | 2800 | |
| EST08 | K30 | 14.7 | 88.5 | Coarse | 2600 | Main used for making tricone drill bits and and other drill bits, suitable for meidum hard and hard rock formations. |
| EST09 | K30 | 14.5 | 88 | Coarse | 2800 | |
| EST10 | K40 | 14.45 | 87.5 | Coarse | 2800 | Used for heavy dury rock drilling, suitable for hard and super hard rock formations, also used for tricone bit, etc. |
| EST20 | K40 | 14.4 | 87 | Coarse | 2900 | |
| EST25 | K40 | 14.45 | 87 | Coarse | 2900 | |
| YG11C | K40 | 14.4 | 87.8 | Coarse | 3100 | With super toughness and wear resistance, for heavy duty rock drilling tolls and DTH drill bits, suitable for hard and super hard rock formations. |
| YG13C | K40 | 14.2 | 86 | Coarse | 3000 |
Main types of the carbide tip inserts:
We also can produce the customized carbide mining buttons, carbide mning tips, not only the sizes & shape, but also the grades based on your using purpose. If you need more specification of the tungsten carbie rod, please kindly contact us.
Quality Control System: We always follow the high quality standard for production, from the material preparing to final product ready, all product will go through 3 inspections before we send them to you. Our professional teams will take care of your product and ensure the good and stable quality for all batches.
Our regular product is tungsten carbide tips, carbide buttons, carbide inserts, end mills,carbide saw tips,carbide mining parts, carbide rods, plates and stripes.
We also have rich experience for customized product, we make your designs become real product, which perfectly match your need. We have many successful projects on the for our clients in different countries.
