hejian tengda petroleum supplies company
Quality first Customer first
10 5/8" IADC627 high quality TCI tricone bit/roller bit for water well/oil well
New 81/2" TDHA IADC527 high quality tricone bit/roller bit for water well/oil
6" IADC261 high quality Steel tooth tricone bit for water well/oil well
PDC drag bit/blade bit for oil well/water well/mining well with higher quality
12 1/4" IADC437 high quality TCI tricone bit/roller bit for water well/oil well
Drag bit/blade bit for oil well/water well/mining well with higher quality
New PDC Drag bit/blade bit for oil well/water well/mining well with higher
PDC Core bit/blade bit for oil well/water well/mining well with higher quality
Core bit for oil well/water well/mining well with higher quality