... shells,casing shoes,PDC bits,wireline drill rods,casings,core barrels for mining,exploration industries in ... core bits2. Surface set Diamond Bits(coring bits and non-coring bits)3. Casing(Rod) shoes/Casing ... B, N, H, P, NT, HT, PT drill rods and BW, NW, HW, PW casing.11. water swivel12. ... casing cutter13. relief valve * Above bits and reaming shells conform to Metric,DCDMA,CDDA standards. * ...