KS C IEC 61212-3-2-2004 电工用工业刚性圆热固树脂层压管和棒材.第3部分:专用材料规范.节2:圆层压制管
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