core bit with 91% export rate

When a drilling program depends on clean, continuous core samples, the bit at the end of the string has to be right. Diamond core bits are the workhorses behind mineral exploration, geotechnical investigation, water well drilling, and resource estimation. The companies that supply them are judged on far more than price alone: consistency, formation-matched design, and the ability to deliver the same quality to every corner of the world are what separate a dependable supplier from the rest.

A core bit is a hollow, cylindrical cutting tool that grinds or shears rock as it rotates, leaving a solid cylinder of rock that can be pulled to the surface for analysis. Because the entire point of coring is to recover intact samples, the bit must balance penetration speed, core recovery, and bit life. That balance is set by the type of diamond, the matrix that holds it, and the profile of the crown.

What the 91% Export Rate Tells You

For Xi'an Heaven Abundant Mining Equipment Co., Ltd., better known as TY Drill Bits, the numbers speak for themselves. Founded in 2010 in Xi'an, Shaanxi, the company exports 91% of its production, with the remaining share serving the domestic market. An export rate that high is not something a manufacturer can simply claim. It means the products have passed the inspection standards of buyers across dozens of countries, survived the logistics of international shipping, and earned repeat orders in markets where quality is checked piece by piece. When a core bit maker ships most of what it produces overseas, its quality control has to be consistent, because there is no local reputation to fall back on.

Types of Core Bits

TY Drill Bits covers the full range of diamond core bits, and understanding the differences helps you pick the right one for your formation.

• Electroplated core bits: a single layer of diamond is bonded to the steel body through electroplating. They are a cost-effective choice for softer formations and are available in a wide range of diameters, from 60mm to 200mm, making them popular for well drilling and shallow exploration where the ground is not highly abrasive.
• TSP core bits: thermally stable polycrystalline diamond elements handle medium to hard formations and resist heat better than standard diamond. TSP bits are a solid middle-ground option for fractured or interbedded rock.
• Impregnated core bits: diamond grit is distributed throughout the matrix, so the bit stays sharp as the matrix wears away. This self-sharpening action makes the impregnated core bit the go-to choice for hard, abrasive rock such as granite, basalt, and quartzite, with sizes available from AQ to PQ.
• Surface set core bits: larger diamond stones are set in a single layer on the face. They cut fast in soft to medium-hard, non-abrasive formations like shale, limestone, and mudstone, and they can be reset and refurbished on site.

Size Standards That Matter

Core bits follow the international wireline sizing system, and matching the bit to your core barrel is essential for good recovery:

• AQ: 48.0mm bit diameter, 30.0mm core — shallow exploration and small-diameter sampling.
• BQ: 59.9mm bit diameter, 36.5mm core — general exploration.
• NQ: 75.8mm bit diameter, 47.6mm core — the most widely used size for medium-depth programs.
• HQ: 96.0mm bit diameter, 63.5mm core — deep drilling programs requiring higher core recovery.
• PQ: 122.6mm bit diameter, 85.0mm core — large-diameter coring for detailed geological characterization.

How to Choose the Right Core Bit

Start with the formation. Soft ground favors surface set or electroplated core bit designs, hard and abrasive rock calls for impregnated bits with a matrix hardness matched to the rock, and fractured ground benefits from TSP or reinforced impregnated designs. Then match the size to your core barrel and drilling rig. Finally, think in terms of cost per meter rather than purchase price: a bit that drills longer between trips is usually the cheaper option in the end, even if its invoice price is higher.

Why Buyers Choose TY Drill Bits

• 91% export rate built up over more than a decade of operation.
• ISO9001 certified production with strict quality control.
• Full range of electroplated, TSP, impregnated, and surface set core bits in AQ, BQ, NQ, HQ, and PQ sizes.
• OEM service for custom diameters, matrix grades, and branding.
• One-stop supply of related drilling accessories, from reaming shells and casing shoes to core barrels and drill rods.
• Fast lead times, with delivery within 15 working days.

Frequently Asked Questions

Q: What is the difference between impregnated and surface set core bits?

A: Impregnated bits have diamond grit embedded throughout the matrix and self-sharpen as they wear, making them ideal for hard, abrasive rock. Surface set bits use a single layer of larger diamonds and cut faster in soft to medium-hard formations.

Q: Which core bit size should I choose?

A: Match the bit to your core barrel. AQ, BQ, NQ, HQ, and PQ cover shallow exploration through large-diameter coring, with NQ the industry default for most medium-depth programs.

Q: Can I get custom core bits?

A: Yes. TY Drill Bits offers OEM service, so you can specify diameters, matrix hardness, and even your own branding.

When a supplier exports 91% of its core bits, it has already proven itself in the most demanding market there is — the global one. If you are planning an exploration program or a water well project, matching the right core bit to your formation is the first step, and working with a manufacturer that has spent over a decade earning international trust makes the rest easier.