Zhejiang Industry and Trade Fordyce teach you purchase method of stainless steel security door security level. Safety factor of stainless steel security door into A, B, C three levels, Valley West door industry Hunan, anti-theft performance of the highest C-class, B second, A-level minimum coefficient. Currently marketed in the stainless steel security doors, mostly Class A Lancaster Gate Valley how much industry, general for general family households. Requirements A grade stainless steel security door is to the whole copper, flat open all closed, Valley West door industry factory outlets, under the coordination of general machinery, hand tools and portable electrical tools, the weakest link is also able to resist Net non-normal opening time when greater than or equal to 15 minutes. Fordyce Ltd. to introduce you to a fire door composition structure: Fire doors generally located in the following parts. (1) closed staircases, leading to the walkway; enclosed elevator, seeking through the forward compartment and walkway leading to the door of the front room. (2) Cable wells, tube wells, flue, garbage Road and other inspection door vertical pipe wells. (3) into the fire district, district construction area of ??control established by the firewall and the fire wall of the door. When building a firewall or fire doors have difficulty valley Manchester door industry manufacturers, use fire shutter doors in place, while the water curtain must be protected. Please call Fordyce industry and trade, we will be happy to help you! Valley West door industry prices, Fordyce, industry and trade worth recommending, Inner Mongolia Valley is provided by Lancaster Gate Industry Co. Zhejiang Fordyce. Valley West door industry prices, Fordyce, industry and trade worth recommending, Inner Mongolia, Zhejiang Valley West Door Industry Co. Fordyce (www.cngusite.com) this year introduced a new upgrade, the above picture is for reference only, please call Tel This page or image on to obtain the latest information, contact: Mr. Shen.