HG/T 20273-2011 "lame plating polyurea protective material painting engineering technical specification" aims to improve the design and construction level of lame plating polyurea protective engineering, strengthen quality control, and ensure the mass of the project. This specification is applicable to the design, construction and mass acceptance of lame plating polyurea protective engineering in new construction, reconstruction and expansion projects. In addition to complying with this specification, it should also comply with the relevant national standards in force. The terminology section defines terms such as lame plating polyurea coating, polyurea bottom layer coating, polyurea interface treatment agent, polyurea surface layer coating and polyurea repair material, providing clear terms and definitions to ensure the smooth progress of the painting project.