... the drill rod and bits 2.ISO certificate 3.Market: all of the world Coal Mining Bit Kennametal Code, Betek Code, Sandvik ... Code, such as B47K17H, B47K19H, B47K22H, B43K, B43H, BHR73, U47,U765, U84 blast furnace taphole cross drill bits We ... can supply mining bits with holders, we also can make it according to Kennametal Code, Betek Code, Sandvik ...