1 Hour Rated 45 mm Thick Single LHA Fire Safety Steel Door For Commercial Building

1 Hour Rated 45 mm Thick Single LHA  Fire Safety Steel Door For Commercial Building

 Fire Safety Door

Product Description

Zhongwo steel Fire door is widely used in all kinds of public Fire -proof areas because of its solid structure and simple shape. Inlaid with fire -proof expansion sealing pieces, the door frame is made of high quality galvanized steel strip, which is one-time rolled and formed through the special production line, without impact sound when closing. Beams are connected with mullions by 90° angle welding, and the large size door frame can be assembled with bolts. The door leaf adopts the process that high-quality cold-rolled galvanized steel sheet is bent by the bending machine precisely, and its interior is filled with green and perlite board which has characters of fireproof, heat & sound insulation and its surface adopts technology without welding spots, so that to get smooth appearance.

Parameters

Material:Key materials of steel fire doors include steel sheet and infilling materials. For door leaf we have 0.8mm thick galvanized steel; for frame 1.2mm. We provide different kinds of fillers such as magnesium oxide board, fireproof perlite board and honeycomb paper. All of them can help our fire doors hold up to 180mins in case of fire.
Door Thickness: 45mm, no matter how long the fire rating.
Door Weight: around 30Kg/m², about 65Kg per doorset.
Door Dimension(Overall with frame): 3 'x 7' for standard single door, max. 4’X8; 6 'x 7’ for standard pair door, max. 8 'x 8';
Finish: standard:powder coating; More to choose: wood grain, PVC coating
As for the color swatch, we have our own system with PBG1001(plain white), B1068(beige), PS2328(gray white) as regular colors. We can also introduce RAL color swatch for you.
Models: Flush Steel Fire Door; Steel Fire Door With Vision Panel.
Features: 1. 3mm thick galvanized steel plate on sides of hinges, closer and
locks.

• Double U-type 43mm X 25mm skeleton made of 1.2mm galvanized steel.
• 25mm X 2mm gap covering stripe made of 0.8mm galvanized steel.
• Glazing bead made of 0.8mm galvanized steel
• Steel covers on the lock sides made of 0.8mm galvanized steel for decoration
• Continuously welded edges

Technical Specification
 

1. It’s designed based on GB12955-2008 Standards Fire Doors, Sound Insulation GB/T 8485-2008.
2. There is cold rolled galvanized steel sheet for stiffening on fire hinge and fire closer point.
3. Filling Process for Door Core Material: Tamping
4. It’s suitable for places requiring better effect for sound insulation and fire insulation.

Fire Resistance Rating(FRR):

Grade A: 1.5 Hours

Grade B: 1.0 Hour

Grade C: 0.5 Hour

Class A: also known as fully insulated door sets, it can meet the requirements of fire insulation and fire integrity at the same time within the prescribed time. The fire-resistance rating is 0.5h (Grade C), 1.0h (Grade B), and 1.5h (Grade A ) and 2.0h, 3.0h.

Class B: also known as partially insulated door sets, its fire insulation requirement is 0.5h and fire integrity rating is 1.0h,1.5h, 2.0h and 3.0h.

Class C: also known as no insulated door sets. There is no requirement for fire insulation. It only need to meet the requirement of fire integrity within the prescribed fire time and the fire integrity rating is 1.0h, 0.5h, 2.0h and 3.0h. We can get the content of no insulated door sets in BS standard.

 
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