Payment & Shipping Terms:
|Electromagnetic Door Holder:||Installed On The Wall, Installed On The Floor, Chain Mounting Method||FMK Controller:||FMK-2D, FMK-4D,FMK-10D|
|Thickness Of Door Leaf:||45mm~55mm||Thickness Of Door Frame:||112mm~120mm|
|Intumescent Seals Size:||15(W)x2(T)mm||Filled Material:||Perlite Fireproof Board|
This kind of propping open fire door of Zhongwo is generally composed of a door leaf made of cold rolled galvanized steel plate with thickness of no less than 0.8mm , a door frame made of cold rolled galvanized steel plate with thickness of no less than 1.2mm, a door closer of high quality, a sealing strip and a release device consisting of electromagnetic door holder and FMK controller.
And the electromagnetic door holder can be divided into three kinds according to its installation methods, namely installed on the wall, installed on the floor and Chain mounting method. Besides, there are three kind of widely used FMK controllers: FMK-2D(Output Power:5W, Size:115×90×55mm) , FMK-4D(Output Power:9W
Size:158×90×60mm) and FMK-10D(Output Power:30W, Size:165×255×70mm ).
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.
Grade A Steel
Grade B Steel
Grade C Steel
|Fire Protection Time (H)||1.5||1.0||0.5|
Thickness of Door Leaf
Thickness of Door Frame
|Thickness of Steel plate for Door Leaf (mm)||0.8||0.8||0.8|
|Thickness of Steel plate for Door Frame (mm)||1.2||1.2||1.2|
Thickness of Fire Glass
|Fire Prevention Board||Available||N/A||N/A|
|Intumescent Seals Size(Width x Thickness)(mm)||15x2||15x2||15x2|
|Filled Material||Perlite Fireproof Board||Perlite Fireproof Board||Perlite Fireproof Board|