IEC 61212-3-1:2013给出了基于不同树脂和不同增强材料的电气用工业硬质圆形层压轧制管的要求。表1给出了应用和区别特性。符合本规范的材料符合既定的性能水平。然而，用户为特定应用选择材料时，应基于该应用中充分性能所需的实际要求，而不是仅基于本规范。 第三版取消并取代了2006年出版的第二版。本版为技术修订版。与前一版本相比，本版本包括以下重大技术变更:浸入水中后绝缘电阻测试的细节以及“轧制和固化”状态下圆轧管标称外径的允许偏差值发生了变化。 关键词:工业硬质圆层压轧管

IEC 61212-3-1:2013 gives requirements for industrial rigid round laminated rolled tubes for electrical purposes, based on different resins and different reinforcements. Applications and distinguishing properties are given in Table 1. Materials which conform to this specification meet established levels of performance. However, the selection of a material by a user for a specific application should be based on the actual requirements necessary for adequate performance in that application and not based on this specification alone. This third edition cancels and replaces the second edition published in 2006. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: Details of test for insulation resistance after immersion in water and values for permissible deviation from nominal external diameter of round rolled tubes in the "as rolled and cured" condition are changed. Key words: industrial rigid round laminated rolled tubes