Hebei Zhankui Drilling *****, LTD

1 The strengthening of bits and inserts can effectively reduce the wear of tooth palms, improve the diameter protection performance of drill bits, a

1 Compact surface coating Super toughness and wear-resistance Good erosion-resistance 2 Hard metal nozzle with carbide liner can effectively pro

1 The strengthening of bits and inserts can effectively reduce the wear of tooth palms, improve the diameter protection performance of drill bits, a

1 Our Advantage ----adequate stocks ----competitive price ----timely delivery ----factory direct 3 Packing/ShippingPacking :wooden case or i

1.----AISI 4145H -Heat treated steel dedicated for Petruleum drilling stools -----Compact surface coating Super toughness and wear-resistance Good ero

Hejian Zhankui DrillingSpare Parts Company was established in 1980. Suppliing Tricone bits (newand renew), PDC bits , drill pipe drill collar , put to

1 Our Advantage ----adequate stocks ----competitive price ----timely delivery ----factory direct 2 Packing/Shipping Packing :wooden case or