Bitcon "Rubidor`" Fire doors are designed to fulfill the requirements of the national test standard. The core is constructed from a magnesium oxychloride monolithic reinforced insulative material with excellent fire resistance and mechanical strength.
NATIONAL TEST STANDARD
• STABILITY is its ability to fulfill its design function of keeping an opening closed in the face of fire so that no fissure or opening wider than 25 mm develops.
• INTEGRITY enables a door to resist fire without the development of perpendicular through openings wider than 6mm and longer in total than the largest dimension of the door.
• INSULATION means the ability to prevent the transmission of enough heat to raise the mean unexposed face temperature by more than 140°C above the initial temperature.
• IMPACT TEST enables the door to resist two successive impacts of a sandbag 250mm in diameter and a mass of 27kg without the formation of any opening wider than 25mm. This test, which is fully described in The South African National Standard - Section 5.5 and 5.6.
Doors are clad with a variety of finishes including masonite, timber veneers (exotic veneers subject to availability), 2.5mm thick Formica laminates and edged with hardwood lipping. Double doors are fitted with rebated meeting stiles. Class "D" doors are finished standard steel clad or veneered with concealed steel cladding.
Heavy duty 100mm / 4.2mm thick flanged brass hinges with nylon washers. Standard door leaves are fitted with 1.5 pair of hinges and 2 pairs on non-standard door leaves.
Viewing panels to a maximum size of 100mm x 300mm can be fitted to and are permitted on class A, B & E doors only. The viewing panels consist of double glazed clear Georgian wired glass fitted in a double sided stainless steel frame.
Both single and double doors can be fitted with standard locks and closers. Where electric locks are required, details of these locks must be supplied in order to prepare the frame strike cut out.