Recommended New Products------Shape â 7â Tungsten carbide ( Patent) For normal tungsten carbide wear plate and wear ring, we only have carbide on the wear surface. But actually, the wear force not only comes from the front, also come from the outlet hole. Thatâ s why the normal tungsten carbide wear plate and wear ring also wear fast. So we develop a tungsten ring which has tungsten carbide both on the surface and inside the hole. The lifetime for wear plate and wear ring has been greatly increased. Under standard pumping situation, we can promise you an 80, 000-100, 000 cubic meters for the wear plate and 30, 000-50, 000 cubic meters for the wear ring.