There are two types sealed bearings TCI (tungsten carbide insert)tricone bit: metal-faced sealed TCI tricone bit and elastomer sealed TCI tricone bit. Our hengji TCI tricone bit types are available in sizes ranging from 3 7/8″ to 32″. From soft to hard, many formations are available and upon request can be jetted, skirted or center holed to your specifications.
Hejian Hengji Bit Manufacture Co.,LTD is specialized in researching and production of rock drilling bits , mainly includes tricone bits, PDC bits, HDD hole opener, foundation single roller cutters, drag bits and related tools with advanced CNC machines and R&D team.
