The types of fire doors are mainly divided into wood fire doors and steel fire doors. They are divided into three grades: Grade A, Grade B and Grade C. The three grades are mainly the length of fire endurance time. Class A fireproof door, with fire endurance of 1.2; Class B fireproof door, with fire endurance of 0.9; Class C fireproof door, with fire endurance of 0.6.

ZHTdoors albaabbada dabka, 31 sano oo waayo-aragnimo wax soo saar ah oo albaabbada dabka iyo Daaqadaha. Albaabada dabka UL ee ugu muhiimsan, albaabada dabka EN, BS EN albaabbada dabka, iwm.