Mining / Thin Wall Core Bits

EHWA® Diamond Industrial Co. Ltd and General Tool have developed a family of Drilling Tools to achieve maximum performance for all drilling applications.

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For Drillers Who Demand the Best

EHWA® Diamond Industrial Co. Ltd and General Tool have developed a family of Drilling Tools to achieve maximum performance for all drilling applications.
These tools include:
• Impregnated core bits
• Reaming shells
• Casing shoes
• Thin wall core bits
• Diamond blades for cutting core samples

Whether you’re performing Exploration, Soil Sampling, Foundation Testing, Highway & Dam Investigation you can expect our Diamond Tools to exceed your drilling and sampling expectations.

Thin Wall Core Bits

When the drilling application calls for drilling concrete, asphalt with electric, gasoline, or hydraulic powered core drills; we offer a broad range of thin wall wet core bits.

OE30P/OEZ30PR
These are our standard, high volume core bits with excellent cutting speed and long life. Outside diameter sizes range from 5/8” to 14” with 14” barrel lengths and 8mm segment heights. OEZ30PR bits have turbo style segments and a unique patented zig zag crown profile.

OE10P/OEZ10PR
We has recently introduced a new high speed wet core bit. These new bits are the same price as the OE30P and OEZ30PR but offer significantly faster cutting speeds. Outside diameter sizes range from 5/8” to 14” with 14” barrel lengths and 8mm segment heights. OEZ10PR bits have turbo style segments and a unique patented zig zag crown profile. OE30P and OEZ30PR will give you longer life, but the new bits give you the speed to finish the job more quickly.

ZOE10UT
ZENESIS™ core bits offers pattern diamond technology for the fastest cutting speeds available, especially in hard materials. Outside diameter sizes range from 1 ½” to 14” with 14” barrel lengths and 10mm segment heights.

OD30P/ODZ30PR
Specialty applications can call for dry core bits. We offer a complete line of these products. Outside diameter sizes range from 1” to 6” with 10” barrel lengths and 7mm segment heights. ODZ30PR bits have turbo style segments and a unique patented zig zag crown profile.