TCVN 9013-2011 "Polyurethane coatings for steel structures" standard was released in 2011, mainly specifies the technical requirements, test methods, inspection rules, signs, Encasement, transportation and storage of polyurethane coatings for steel structures. The standard applies to polyurethane coatings for surface corrosion protection and decoration of steel structures, aiming to ensure that the mass and performance of coatings meet the use requirements of steel structures. The standard details the physical and chemical performance requirements of coatings, including viscosity, percent solids, water resistance, heat resistance, weathering resistance and other indicators.