IEC 60684的本部分给出了两种类型的热缩聚烯烃套管、双壁、非阻燃、标称收缩比为3:1的要求。 已发现该套管适合在高达100°C的温度下使用。 •A型:中等壁，内径通常不超过200,0 mm。•B型:厚壁，内径通常可达200.0 mm。 这些套管通常以黑色供应。 由于这些类型的筛条覆盖了相当大的尺寸和壁厚范围，附录a（表a.1和a。 2） 提供可用尺寸范围的指南。实际尺寸将由用户和供应商商定。 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将基于该应用中充分性能所需的实际要求，而不仅仅基于本规范。交叉引用:ISO 11358-1EN ISO 11357-3:2018EN ISO 868:2003IEC 60684-1:2003IEC 60757:1983IEC 60684-2:2011EN 60684-2:2011ISO 868:2003ISO 11358- 1:2014HD 457 S1:1985ISO 11357-3:2018EN 60684-1（IEC 60684-1:2003）ASEN ISO 11358-1:2014IEC 60296:2012IEC 60684-3（所有表格）EN 60684-3-420至422（系列）IEC 60684-3（系列）IEC 60502-1购买本文件时提供的所有现行修订版均包括在内。

This part of IEC 60684 gives the requirements for two types of heat-shrinkable, polyolefin sleeving, dual wall, not flame retarded with a nominal shrink ratio of 3:1. This sleeving has been found suitable for use at temperatures of up to 100 °C. • Type A: Medium wall, internal diameter up to 200,0 mm typically.• Type B: Thick wall, internal diameter up to 200,0 mm typically. These sleevings are normally supplied in colour black. Since these types of sleving cover a significantly large range of sizes and wall thicknesses, Annex A (Tables A.1 and A.2) provides a guide to the range of sizes available. The actual size will be agreed between the user and supplier. Materials which conform to this specification meet established levels of performance. However, the selection of a material by a user for a specific application will be based on the actual requirements necessary for adequate performance in that application and not based on this specification alone.Cross References:ISO 11358-1EN ISO 11357-3:2018EN ISO 868:2003IEC 60684-1:2003IEC 60757:1983IEC 60684-2:2011EN 60684-2:2011ISO 868:2003ISO 11358-1:2014HD 457 S1:1985ISO 11357-3:2018EN 60684-1 (IEC 60684-1:2003) ASEN ISO 11358-1:2014IEC 60296:2012IEC 60684-3 (all sheets)EN 60684-3-420 to 422 (series)IEC 60684-3 (series)IEC 60502-1All current amendments available at time of purchase are included with the purchase of this document.