They are produced in various sizes. The door leaves are made two sheets of steel sheet thickness of 1.5 or 2.0 mm (depending on classification of the room), formed by bending the cold and forming the lining of the door leaf. The structure is reinforced u-bars, and the space between the profiles is filled with wool mineral. The wings on all four edges have a rebate the gasket. The wings are hung on three hinges welded ø22 with ball bearings, the frame made of C-profile or angularprofile, with place for the seal. Standard frames have a threshold of 20 mm. Secure the hinge side are three lock antiburglary bolts.

DC3.1 door KT-M can be used as interior doors, opening outside and the inside of the room and the door meet the requirements the secret offices in accordance with Ordinance No. 25/MON Ministry of Defence National on November 17, 2005, and Ordinance No. 12/MON Minister National Defence on 12 March 2010. the particular way secret offices and organizations other than the office of secret cells organization responsible for recording, storing, circulation and sharing of classified security measures physical and circulation of classified information.

Surface finishing details

• spray coated RAL color
• veneered with PVC
• MDF panel with a thickness of 6 mm or 10 mm
• plywood panel veneered natural oak veneer a thickness of 6 mm or 10 mm

DC3.1 door KT-M can be made available with fire resistance EI60 as well as a double. They are equipped with a standard lock.

FEATURES TECHNICAL STANDARD DOOR DC3.1 KT-M

• C rail or angular frame with a thickness of 3 mm EPDM gasket on three edges
• wing coat of steel sheet with a thickness of 1.5 mm - 2 mm, wing without additional coatings with a thickness of 60 mm
EPDM gasket on all four edges
• fill mineral wool with a density of 60 kg / m3
• 3 ball bearing hinges
• 3 antiburglary bolts
• Multi-point handle lock
• additional coded lock
• sealing elements
• sash weight without additional pay 40 to 45 kg / m2

PROPERTIES DOOR DC3.1 KT-M

• resistance to burglary - Class C according to PN-90/B-92270
• resistance to burglary - Class 4 according to EN 1627:2006 
• resistance to repeated opening and closing - Class 6 according to EN 12400: 2004
• resistance to wind load - Class 5C according to EN 12210: 2001
• corrosion resistance - category C3 according to EN ISO 12944-2: 2001
• waterproof - Class 3A according to EN 12208: 2001
• sound insulation - Rw = 40 dB according to EN ISO 717-1: 1999 
• thermal transmittance - 2.2 UW (W / m2× K) according to EN ISO10077-1: 2007
• air permeability - Class 4 according to EN 12207: 2001
• operating forces - Class 3 according to EN 12217: 2005
• mechanical strength - class 4 according to EN 1192: 2001