NF C26-168-1-1995
电气用基于热固树脂的工业硬质圆形层压管材和棒材.第3部分:专用材料规范.活页1:圆层压轧制管
Industrial rigid round laminated tubes and rods based on thermosetting resins for electrical purposes. Part 3 : specifications for indivudual materials. Sheet 1 : round laminated rolled tubes.