The paper introduces the overview of CHINA RAILWAY enterprise standard Q/CR 546(all parts)Coat-ings and coating application for EMU/DMU,analyzes the revision background,added content,and changes in key technical indicators of Q/CR 546.1-2022 Coatings and coating application for EMU/DMU-Part 1:Coating materials and coating systems for exterior surface of coach bodies,providing reference for the revision and implementation of other parts of the standard.
NETL
NSTL
万方数据
