Articles, products and parts of ship's appliances: fire-resistant ship's portholes

Purpose: closing of openings on ships and watercrafts. They are designed to provide the necessary view from the premises, light and air access to the rooms in which they are installed, as well as to prevent the spread of fire and combustion products from the room or compartment with the fire centre to other rooms.
Types: water-gas-tight heavy, normal.
Types: round, rectangular (blind and casement).
Design features:
Dimensions: round from Ø200 to Ø450mm, rectangular: from 355x500mm to 1100 to 800mm; glazing with total thickness from 44mm to 49mm;
Method of fastening: by bolts, welding.
Climatic version OM, category I according to GOST 15150: ambient temperature from minus 40? to plus 45?.
Main material: aluminium alloy.