Modern requirements for security doors, methods of classification are contained in the following regulatory documents: GOST R 51072-97, GOST 50862-96, GOST 51112-97, GOST 50941-96, SNIP 21-01-97, RD 78.147-93 Ministry of the Interior. By definition, these documents: Door protection – is resistant to cracking device consisting of a door frame with a movable blade attached to […]