Class A fireproof door can only reach 1.5h fire resistance time limit, and only the fireproof door made by special process can meet the 3-hour fire resistance requirement. The 3-hour fire door adopts the galvanized steel plate and stainless steel profile made by special process as the outer frame, which can be used as the window, but the window specification should not be too large.

ZHTdoors branddøre, 31 års produktionserfaring indenfor branddøre og vinduer. De vigtigste UL branddøre, EN branddøre, BS EN branddøre osv. Vi har certificering. ZHTdøre understøtter OEM og gratis design. Vores fordele: god kvalitet, fabrikspris, god service. Velkommen til at konsultere os.