We supply many sizes bits: A,B,N,H,P/ATK,BTK,B3,N2,N3,NTT,H3,HTT,P3,PTT,T2 46,T2 56,T2 66,T2 76,T2 86,T2 101..etc

We are the biggest manufacturer of diamond bits,reaming shells,casing shoes,PDC bits,wireline drill rods,casings,core barrels for mining,exploration industries in China.

 our current product list as below:1. Impregnated diamond core bits2. Surface set Diamond Bits(coring bits and non-coring bits)3. Casing(Rod) shoes/Casing bits4. Reaming shells5. B, N, H, P, NT, HT, PT drill rods6. BW, NW, HW, PW casing.7. Core barrel and accessories:B, N, H and PQ(Inner & Outer Tube,Head assembly,Locking Coupling,Adaptor Coupling,Inner Tube Stabilizer Ring,Landing Ring,Landing Shoulder etc)8. N & H overshot.9. PDC bits (coring or non-coring)10. 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. * We can manufacture all kinds of products according to customer's special requirement. Any requirement please contact us, we'll do the best service for you. Hope we can establish a good business relationship. 

.