DIN EN 61212-3-2-2007 绝缘材料.电工用基于热热固树胶的工业硬质圆形层压管材和棒材.第3部分:各型材料规范.第2节:圆型压模管
Insulating materials - Industrial rigid round laminated tubes and rods based on thermosetting resins for electrical purposes - Part 3: Specifications for individual materials - Sheet 2: Round laminated moulded tubes (IEC 61212-3-2:2006); German version EN