... 4:Long service life DTH drill rods1,Top-hammer drilling tools including thread button bits(R25,R28,R32,R38,T38, ... tybe bits, Clay bits,etc4,Diamond core drilling tools including the diamond core bit(BQ,NQ,HQ,PQ,TT,T2,T6,WF,WG,etc), reaming shell, core barrel and drill ... rods.etc.5,Rock anchor tools, IBO anchor system( anchor rods, anchor bits, nut, plate, ...