Flexible insulating sleeving - Part 3: Specifications for individual types of sleeving - Sheet 247: Heat-shrinkable, polyolefin sleeving, dual wall, not flame retarded, thick and medium wall (IEC 60684-3-247:2019); German version EN IEC 60684-3-247:2019
绝缘软套管.第3部分:各种类型套管的规范.活页247:双壁非阻燃厚壁和中壁热缩聚烯烃套管(IEC 60684-3-247-2019);德文版EN IEC 60684-3-247:2019