Fordyce Ltd. to introduce you to the technical requirements of fire doors: Wooden fire door is flame retardant wood or wood products as frames, doors frame, panel doors, internal doors if the filling material, Tianjin B fire doors, then filled with nontoxic to humans fire insulation materials, B fire door price, and with a door with a certain fire resistance of fire consisting of hardware accessories. Doors and door frames lap size not less than 12mm; doors and door frames have a gap with the hinge side activities shall not exceed the design drawings specified dimensional tolerances; doors and door frames have a lock on one side of the gap with the activity should not be greater than the design drawings specified dimensional tolerances; with the door leaf and the frame of the gap should not be greater than 3mm; double-leaf, the gap between multi-leaf door should not be greater than 3mm; doors and the lower frame or floor space activities should not exceed 9mm; doors and the bonding surface of the door frame clearance: doors and door frames have hinge side, there is a bonding surface on the lock side and frame clearance should not be greater than 3mm; doors and door frames of plane height difference: In the face of the fire door open, scalable Tianjin barcode reader plane doors and door frames should not exceed the height difference 1mm. Welcome to the new and old customers call Fordyce Ltd., we will exhaust for you! Fordyce Ltd. to introduce you to fire doors and security doors difference: security doors must have "FAM" logo, and with reference to anti-theft security door general technical conditions GB17565-2007. Although the fire door is made of steel but the inner door panel is filled with fireproof materials, steel door thickness also have different requirements. Fordyce Ltd. look forward to your call! Tianjin B fire doors, Fordyce, industry and trade quality, where to buy B fire doors provided by Zhejiang Industry and Trade Co. Fordyce. Tianjin B fire doors, Fordyce and Trade Quality, B fire doors where to buy Zhejiang Fordyce Ltd. (www.cngusite.com) this year introduced a new upgrade, the above picture is for reference only, please call Tel This page or image on to obtain the latest information, contact: Mr. Shen.