Schaukel Bohrwerkzeuge Kohle Cutter Bohrwerkzeuge

rockdrilling tools,: coal cutter drilling tools suitablefor the Mining, Quarrying, Coal-cutting, Road construction etc.GradeYG4.5 YG20Various dimensions are available.By extrusion method,HIP sintered provides quality improvement to the finished products to ensure meterial reliability.our drill machine and bit main for mining ,include button bit , DTH bit , cross bit , chisel bit , coal cutting bit, drill rod , drill shank and so on . our products had exporting all over the world ,such as Australia , US , UK , India , Iran ect. we accept OEM order.