1CS77.040.99H21中华人民共和国国家标准GB/T20831一2007电工钢片(带)层间绝缘涂层温度特性测试方法Methods of assessment of temperature capability of inter laminarinsulation coatings of electrical sheet and strip(IEC 60404-12:1992 Guide to methods of assessment of temperaturecapability of interlaminar insulation coatings,MOD)2007-01-11发布2007-06-01实施中华人民共和国国家质量监督检验检疫总局中国国家标准化管理委员会发布