Tortoise Shell Mesh has gotten extensive application in chemical industry, petroleum, power generation, etc. It appears good performance , it is a hexagonal hole mesh , with bar steel pressed and punched, three are small holes in every border for interflowing between the holes . The mesh is welded on cyclone dust collector or on the inside wall of the cylinder, poured refractory material. So , it has prolonged lifetime. The refractory material does not fall off to blockading the discharge hole. Material: carbon steel, 1Cr13, stainless steel .