Round Stainless Steel Fire Damper is designed for offshore work and can effectively block the infiltration of water vapor and smoke, making it particularly suitable for humid environments such as ships, offshore platforms, and underground engineering. It meets the relevant requirements of the 1974 International Convention for the Safety of Life at Sea (SOLAS) and its subsequent amendments for fire protection of ship structures. Accreditation certificates and Lloyd's Register (LR), GL, ABS Recognized inspection certificates from foreign classification societies such as French Classification Society (BV), Norwegian Classification Society (DNV), Japan Maritime Association (NK), European Community (CE), etc.