B15 Steel Fire Door

B15 Steel Fire Door

Introduction of B15 Fire Door

Class B fire doors are mainly used in crew living areas. It has the function of fire protection and weathertight. But B15 fire door is less airtight than A15 fire door. B15 fire door requirements in the fire resistance test, the average temperature rise of its backfire side within 15 minutes does not exceed 140 ℃, the temperature rise of any point on the back does not exceed 225 ℃.

Specifications of B15 Steel Fire Door

type	code	escape	venitilation	clear size L		cutout in steel wall		frame thickness D	leaf thickness d
				L	B	L1	B1
B15	B15			1500~2000	500~1000	L+85	B+85	T+50	40
	B15F		√
	B15T	√	√
	NB15
	NB15F		√
	NB15T	√