Dando are proud to supply the D-Series range of impregnated diamond core bits.

Offering superior value and performance, the D-Series impregnated core bits are designed to effectively drill any formation with a Moh’s hardness in the range of 4 to 8. The ‘D’ numbers provide a simple means of determining the correct matrix type to use for your job with, in general, a low ‘D’ number being used to drill a relatively soft, fractured and abrasive formation. As the numbers increase, the matrices are intended for use in increasingly harder formation up to the highest number, ‘D12’, which would be used to drill an ultra-hard, highly consolidated, non-abrasive formation.

Dando can supply many sizes of core bits with standard impregnation depths of 6 mm, 9 mm, and 12 mm. Other customer defined impregnation depths are available on request. Most sizes of impregnated diamond core bits can be supplied in several different bit crown profiles and waterway configurations.