Fire Damper Valves of Ventilation Systems. Test Method for Fire-Resistance
Клапаны противопожарные вентиляционных систем. Метод испытаний на огнестойкость. |
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GOST 31385-2008Vertical cylindrical steel storage tanks for … |
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GOST 17.1.1.04-80Environmental protection. Water. Classification … |
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GOST 18164-72Drinking water. Method for determining dry … |