Xi'an Tydrillbits Co.,Ltd is one of the most famous China impregnated core bits manufacturers,Website:://.tydrillbits.com, welcome to wholesale cheap impregnated core bits from our factory.Description of impregnated core bitsImpregnated core bit is popularly applied in the soft, abrasive, sedimentary, unconsolidated rock formation where the impregnated core bits perform badly. Grade A core bits are made with imported natural diamond particulars.Specifications of core drill bitsDouble tube surfaceSize( surface exploration drillMatric system(mm)Imperial system( in )Hole diameterCore diameterHole diameterCore diameterBQ6036.42.361.43NQ75.747.62.981.88HQ96.163.53.782.5PQ122.7854.833.34Triple tube surfaceNQ375.7452.981.78HQ396.161.13.782.41PQ3122.7834.833.27Feature of core bits1.High penetration rate and drilling effeciency.2.Long service life;3.Good gauge effect;4.High cost performance;5.Wide usable range.   Application of core bitsImpregnated diamond core bits are the most commonly useful bits in the mineral exploration industry. It core completely and have high efficiency.