NF D35-337-1977
Статус: Дата введения в действие:
| Обозначение | NF D35-337-1977 |
|---|---|
| Заглавие на английском языке | BOILERS WITH USEFUL POWER UP TO AND INCLUDING 70 KW USING GAS FUELS FOR HOT WATER CENTRAL HEATING WHICH CAN BE CONNECTED TO A MECHANICAL INSTALLATION FOR THE EVACUATION OF COMBUSTION PRODUCTS. |