fire rated door in kenya

Fire Rating
Fire rated door is tested according to DIN 4102
standard (equivalent to TS 1263 and BS 476) and
rated as F120AB since the door performed a fire
resistance duration of 120 minutes.
Leaf
Both faces of door leaf are produced from 1.0 mm
thick cold rolled steel sheet by bending process, fit to
each other and spot-welded. Gypsumboards are
glued to metal surfaces from inside and rockwool is
placed between the gypsumboards. One pair of
omega shape-bent vertical stiffeners from 1.0 mm
thick steel are placed inside the leaf to provide extra
strength for deformation. Total leaf thickness for
single leaf and double leaf doors are 70 mm and 80
mm, respectively. On hinge side of the leaf, there are
three pieces of fixed security bolts, which enters to
the special casing on the frame during closed position
of the leaf