As we know, steel fire doors are what we call iron fire doors. The door frame, door leaf frame and door leaf panel made of steel materials are used for fire doors. The door leaf is filled with non-toxic and harmless fireproof and thermal insulation materials, and equipped with fireproof hardware fittings to form a door with certain fire resistance, so its fire resistance is very good.

ZHTdoors portas corta-fogo, 31 anos de experiência em produção de portas corta-fogo e janelas. As principais portas corta-fogo UL, portas corta-fogo EN, portas corta-fogo BS EN, etc., temos certificação. ZHTdoors suporta OEM e design gratuito. Nossas vantagens: boa qualidade, preço de fábrica, bom serviço. Bem-vindo a nos consultar.