The door frame of UL fireproof door is made of galvanized steel plate, and the door leaf is made of galvanized steel plate, stainless steel plate, and coated steel plate. The interior is filled with perlite fireproof door core plate. The fire resistance rating of UL fireproof door is 20-180 minutes, please consult us.

Deriyên agir ZHTdoors, 31 sal ezmûna hilberînê di deriyê agir û pencereyan de. Deriyên agir ên sereke yên UL, deriyên agir EN, deriyên agir BS EN, hwd.. Em xwedî sertîfîkayê ne.