Impregnated diamond core bits can penetrate a broad range of formations from the softest to the hardest rocks. They are manufactured with very small, high quality synthetic diamonds mixed evenly through a tungsten carbide Surface set diamond coring bits are manufactured with a single layer of natural diamonds set into a hard matrix on the working faces of the bit to give long service life and maximum penetration in soft to hard formations. The surface set diamond bit (s/s) differs from the impregnated diamond bit in that they are set with a single layer of natural drill diamond on the working surfaces of the bit crown in a pre-determined pattern.
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