Dezhou dengtan FRP SMC combined water tank is a new type of water tank commonly used in the world. It is a closed type water tank composed of SMC FRP square mould pressing veneer, sealing material, metal structure and piping system formed by high temperature molding. It has high strength, light weight, corrosion resistance, beautiful appearance, good water quality, clean and pollution free, and long service life, The maintenance management is convenient and so on. Its unique performance has solved the problems of large weight, easy leakage, corrosion of steel plate water tank and the pollution of water quality caused by the falling off of anti rust coating.