china bainas rock bit manufacture Co., Ltd. in China. Was established in 1998.

    1)Product :we specializes in manufacturing:Tricone bits,steel tooth bit,milled tooth tricone bit,tungsten carbide insert rock bit,tri-cone drill bit ,3 cone bits,rotary bit, TCI tricone bit,PDC drill bit ,diamond core bit,bicenter bit,single cone bit , reamer bit,down hole opener,hole enlarger,drag bit,button bit ，drill pipe,drill collar ,mud pump and drilling equipment for petroleum&gas ,water well ,mining and tectonic industries ，oil field, construction, geothermal, directional boring, and underground foundation work all over the world.
Our products not only won the trust of domestic clients, but also are exported to Canada ,USA,America,Austrilia,Middle East,South Africa in the international market .

2) API and ISO certificate, Thread With API REG standard
3)we are a global wholesale supplier of tricone, and PDC bits and core bits for use in the gas, oil and mining industries.
4)Size range: from 2 7/8 to 26”

IADC CODE:112 121 131,127 ,137,215 216 217 ,311 312 315 317,327,417 427 437,415 425, 435,517,527 ,537,547,517,525,535,617,627,637,647,625,635,637,712,737,837,832
Size:3 7/8, 3 5/8,4 1/2,4 5/8,5 1/2,6 ,6 1/2,6 3/4,7 7/8,8 1/2,8 3/4,9 1/2,9 5/8,9 7/8,10 5/8,12 1/4,13 3/4,14 3/4,14 5/8,16,17 1/2,20,22,23 ,24,26

5）We also import and buy used tricone bit ,steel tooth bit ,TCI tricone ,scrap pdc bit,renew bit,reruan bit