cemented carbide frades rock drilling tools, geological prospecting drilling tools and coal-mining tools yg8c   It is suitable for making geological prospecting drill  bits and mining inserts for light electrical drills for drilling soft rock and cola formations and drill...

cemented carbide frades rock drilling tools, geological prospecting drilling tools and coal-mining tools yg8c   It is suitable for making geological prospecting drill  bits and mining inserts for light electrical drills for drilling soft rock and cola formations and drill...

cemented carbide frades rock drilling tools, geological prospecting drilling tools and coal-mining tools yg8c   It is suitable for making geological prospecting drill  bits and mining inserts for light electrical drills for drilling soft rock and cola formations and drill...

hard alloy rods with one straight coolant hole 1.use 100% virgin raw material 2.ISO09001 3.used for making drilling bit hard alloy rods with one straight coolant hole:hard alloy rods with one strainght coolant holeexternal diameter(mm)internal...

tungsten carbide rods with one straight coolant hole 1.use 100% virgin raw material 2.ISO09001 3.used for making drilling bit tungsten carbide rods with one straight coolant hole:tungsten carbide rods with one strainght coolant holeexternal diameter(mm)internal...