Intangibles, articles and parts of marine equipment: doors of aluminium extrusions

Ship doors. Purpose: for installation on vessels of "M", "O", "R", "L" class of inland navigation.
Type: watertight, splash-proof; permeable; degree of fire resistance type A-0; A-15; A-30; A-60.
Type: with threshold, without threshold, with closed box, with emergency moulding (knockout), ventilation grille.
Opening method: with swinging opening, hinged, suspended, swivel-hinged, combined.
Filling of the door leaf: blind, glazed, light, decorative.
Method of fixing: mechanical on screws.
Climatic version OM, category I according to GOST 15150: ambient temperature from minus 40? to plus 45?.
Main material: aluminium alloy.