fire door, double sash na may frame at sash fixed wit, fire proof door European standard

Ginagamit ng steel fire door ang kaliwang door frame ng cold-rolled steel plate, ang door leaf frame at ang door leaf surface. Ang steel fire door ay may mataas na lakas ng epekto, magandang hitsura, sound absorption at heat insulation, at may malawak na hanay ng mga application.

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fire door, double sash na may frame at sash fixed wit, fire proof door European standard-ZTFIRE Door- Fire Door, Fireproof Door, Fire rated Door, Fire Resistant Door, Steel Door, Metal Door, Exit Door