EN 17020-3:2022 耐火和/或防烟门和可开窗自闭耐久性试验结果的扩展应用 第3部分：钢推拉门自闭耐久性
Extended application of test results on durability of self-closing for fire resistance and/or smoke control doorsets and openable windows - Part 3: Durability of self-closing of steel sliding doorsets
This document is applicable to the following types of steel based doorsets: horizontally sliding single and double leaf doorsets, horizontally sliding single and double leaf telesc...