... degradation The bit crown of electroplated diamond core bits are electroplated with layers of synthetic ... formations. It is similar to the impregnated diamond core bit, for drilling different rock formations, the ... matrix hardness of electroplated diamond core bit could be different, please refer to ... , AQTK, BQTK ,BQ3 ,NQ2, NQ3, NQIT, HQ3, HQTT, PQ3, PQTTT2 series T2 46, T2 56 ,T2 76 ...