This standard specifies the requirements for the design, manufacturing, test methods, inspection rules, painting, marking and identification of liquid dangerous goods tank containers (hereinafter referred to as liquid tanks). This standard is suitable for shipping liquid tanks with a saturated vapor pressure of no more than 0.3MPa (absolute pressure) at 50°C and a tank volume greater than 450L. During the normal use of liquid tanks, for liquids whose maximum operating temperature is higher than or equal to the standard boiling point, or for liquids whose maximum operating temperature is lower than the standard boiling point, the gas phase space (non-instantaneous) at the top of the tank is greater than or When the pressure is equal to 0.025m and the maximum working pressure is greater than or equal to 0.1MPa (excluding hydrostatic pressure), the design, manufacture and inspection of liquid tanks should not only comply with the provisions of this standard, but also meet the "Pressure Vessel Safety Technical Supervision Regulations" 》requirements. This standard applies to the media in Appendix A. For media beyond Appendix A, when their physical and chemical properties are similar to Appendix A, they can be designed and manufactured with reference to this standard and the "Recommendation on the Transport of Dangerous Goods" or the "International Maritime Dangerous Goods Code". This standard does not apply to the design and manufacture of the following liquid tanks: a) The tank is made of non-metallic materials; b) The tank is a vacuum insulation structure; c) The tank has special requirements for national defense and military equipment. The requirements set forth in this standard are basic safety technical requirements. Liquid tanks that comply with this standard can be suitable for road, railway or waterway transportation, as well as combined transportation of these modes of transportation.