... product mainly applies in the mine, the petroleum, geological, in the urban road construction excavation, mining, the drilling and so on. ... carbide. And your drawings are pretty welcomed.Package:Wooden box. The package of parabolic buttons made by tungsten carbide scrap ... ,YG8L,YG15,YG20,YG20C,YG20D etc are the traditional material,suitable for the normal cemented carbide teeth. Package: warmly ...