BS EN 17020-4:2021
Статус: Дата введения в действие:
| Обозначение | BS EN 17020-4:2021 |
|---|---|
| Заглавие на английском языке | Extended application of test results on durability of self-closing for doorsets and openable windows. Durability of self-closing of fire resistance and/or smoke control hinged and pivoted metal framed glazed doorsets and openable windows |
| Количество страниц оригинала | 58 |