... including air cylinder edge sealing, spring edge sealing, and graphite block sealing and combination for above. 6. Kiln head hood: ... building material equipment, and it can be divided into cement kiln, metallurgy chemical kiln and active lime kiln, porcelain ... 2) It is also used in various industries, such as cement, nonferrous metallurgy, ferrous metallurgy, chemistry, building, refractory material, ...