... Casewe can supply kingdream rock bits,tricone bits, diamond bits,PDC bits,TCI bits, steel tooth bits, milled tooth bits, rock bits, oilfield bits and so on . ... (polycrystalline diamond compact) grades and shapes applied for rock formations as follows:1. Andesite, marble, metamorphic ... ,117,127,437,517,617,637 TypeTricone bits, Steel tooth bits, PDC bits Applicable water well, oil field, construction ...