... straining element/equipment.A, overview Y fluorine-butterfly filter is used to remove corrosive ... , Materials used: Stainless steel Aluminum Bronze Brass Copper Nickel Cast iron Steel Plastic Rubber etc.Fifth, ... filter, carbon filter, acid filter, oil purifier, filter bag, bag filter, filter cartridge , filter equipments etc.Reason 4Shanghai Baosteel (world top 500 enterprise) and Wuhan Iron and Steel ...