IEC 62011-3-1 Ed. 1.0 b:2003
Insulating materials – Industrial rigid moulded laminated tubes and rods of rectangular and hexagonal cross-section based on thermosetting resins for electrical purposes – Part 3-1: Specifications for individual materials – Tubes and rods of rectangular and hexagonal cross-section
standard by International Electrotechnical Commission, 08/21/2003