CEI EN 61212-3-1:2014 绝缘材料 电气用热固性树脂工业刚性圆形层压管和棒 第3部分:单个材料的规范 表 1:圆形层压卷管
Insulating materials - Industrial rigid round laminated tubes and rods based on thermosetting resins for electrical purposes Part 3: Specifications for individual materials – Sheet 1: Round laminated rolled tubes