... Hexin Machinery Co.,Ltd is one of the leading furnace fan manufacturers and suppliers ... precision casting, high temperature furnace fans made in China from our factory.The furnace fans are produced by HEXIN , ... , as-cast or machined and dynamic balanced . The regular diameters we are produce are380mm,450mm, 500mm, ... 580mm,680mm and more. The regular materials are 1.4848,1.4852,2 ...