The surface forA wear ring is more than carbide type wear plate and wear ring, HRA is 86°, the tensile strength is 2500N/mm2.Life time of wear plate is more than is 7mm,width is 30mm. Thickness of inside sleeve tungsten carbide is 6.5mm, which is to improve life time.Nhole tungsten The surface for A type wear plate and wear ring are welded by double tungsten carbide rings,tungsten carbide thickness The surface for B type wear plate and wear ring are welded by L tungsten carbide rings, we call i