Intangibles, articles and parts of marine equipment: water and gas-tight marine doors

Purpose: closure of openings on ships and watercrafts, as well as to prevent the spread of fire and combustion products from the room or compartment with the fire centre to other rooms.
Type: water-gas-tight, water-gas-tight fireproof A-0, A-15, A-30, A-60;
Types: blind, with round, with rectangular porthole; external and internal opening; with lever, with individual closing; without sealing and without insulation, with sealing and without insulation, with sealing and without insulation, with sealing and with insulation.
Basic material: steel