1.the head of tungsten carbide tip is fired by vacuum 2.the product has passed ISO9000/2000 3.round shank BETEK cutter bits 1.Ours rotary bits can be suitable for Bauer,Cat,Sany,Yutong,Foton Lovol and Zoomlion machines.2.We use high grade alloy steel and tungsten carbide tip and adopt advanced brazing technology to produce high quality,high wear resistance,long life cutters. The material of the ...