... and bucket type bolt etc.Euipment:CNC lathe,automatic lathe,threading rolling machine,tapping drilling machineTesting:roughness test,hardness test, tensile ... testUsage:match for the liner board for ball mill ,crusher.widely applied in cement,minging ,electronic industryUNC/UNF ... of liner bolts, we also offers a complete range of mill liner washers, seals and nuts.Delivery time: based on ...