Hebei Zhankui Drill Equipment Co., Ltd specializes in drill bits, drill pipe, Mud pump and stabilizers for water well, oil field, construction, geothermal, directional boring, and underground foundation work all over the world. Our purpose is to sell the best quality products at the lowest possible prices we regularly supply used tricone bits include TCI bits steel tooth bits scrap PDC bits (TCI bits, Milled steel tooth bits) used tricone bits.size: "8-1/2", "9-1/2", "12-1/4", "15-1/2", "17-1/2 We have been serving the drilling industry since 1985 , we provide clients with quality drill bits , drill pipe and related products..please contact me:

We also supply new drill pipe with large quantity and good condition