Home / Standards / GB/T 20831-2007 GB/T 20831-2007 Abolished Methods of assessment of temperature capability of interlaminar insulation coatings of electrical sheet and strip 电工钢片（带）层间绝缘涂层温度特性测试方法 Standard Type GBT ICS 77.040.99 CCS H21 Status 废止 Issue Date 2007-01-11 Implementation 2007-06-01 Responsible Dept 中国钢铁工业协会 Drafting Unit 中国钢铁工业协会