... new TCI tricone bits,steel tooth bit and pdc bits Material: Alloy steel Certificated by API ... supply kingdream rock bits,tricone bits, diamond bits,PDC bits,TCI bits, steel tooth bits, milled ... 8” to 17-1/2”.There are different PDC (polycrystalline diamond compact) grades and shapes applied ... 517,617,637 TypeTricone bits, Steel tooth bits, PDC bits Applicable water well, oil field, construction, ...