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 iingcango zomlilo, iminyaka eyi-31 yamava okuvelisa kwiingcango zomlilo kunye neWindows. Iingcango eziphambili zomlilo ze-UL, iingcango zomlilo ze-EN, iingcango zomlilo ze-BS EN, njl., Sine-certification.ZHTdoors ixhasa i-OEM kunye ne-design.Our yamahhala: umgangatho omhle, ixabiso lefektri, inkonzo enhle.Wamkelekile ukuba uqhagamshelane nathi.