... china supplier of TCI tricone bits and pdc diamond bits API&ISO9001:2008 Size: 3 7 ... bits,kingdream bit,smith bit,tricone bits, diamond bits,PDC bits,TCI tricone bits, steel tooth bits ... -7/8” to 17”.There are different PDC (polycrystalline diamond compact) grades and shapes applied for rock formations ... ,617,637 TypeTricone bits, Steel tooth bits, PDC bits Applicable water well, oil field, construction, ...