This standard specifies the technical requirements for sulfuric acid dew point corrosion resistant steel plates and steel strips, including brand representation method, size, shape, weight, test method, inspection rules, Encasement and mass certificate, etc. It is applicable to hot-rolled steel plates with film thickness not greater than 50 mm and hot-rolled steel strips with film thickness not greater than 25.4 mm. This standard is mainly applied to areas prone to acid corrosion such as sintering machine heads, environmentally friendly flue gas treatment equipment, power plant chimneys, metallurgical desulfurization devices, etc., aiming to improve the durability and safety of steel in harsh corrosive environments.