A60 Class Double Leaf Fireproof Door

A60 Class Double Leaf Fireproof Door

Product Introduction:

The A60 Class Double Leaf Fireproof Door is a high-performance, marine-rated fire protection system engineered for use on ships, offshore platforms, floating production storage and offloading (FPSO) units, and other maritime vessels where wider access is required. Designed to meet the stringent requirements of the International Convention for the Safety of Life at Sea (SOLAS) and the International Maritime Organization (IMO), this door provides up to 60 minutes of fire and smoke containment, making it an essential safety component for bulkhead installations, main escape routes, equipment access points, and compartment separation in hazardous marine environments.

Constructed from heavy-gauge steel with a non-combustible insulation core—typically composed of high-density ceramic fiber or rock wool—the A60 Class Double Leaf Fireproof Door delivers exceptional thermal resistance and structural integrity under extreme conditions. During a fire, the insulation core limits temperature rise on the non-fire side, while intumescent seals expand to block the passage of smoke and hot gases. The double leaf configuration allows for a wider clear opening than single leaf doors, facilitating the movement of personnel, equipment, and stretchers. The door is also designed to withstand the constant vibration, saltwater corrosion, and humidity typical of marine operations, ensuring long-term reliability.

The double leaf design features two independently operating steel door leaves, typically arranged with an active leaf (equipped with a locking mechanism) and a passive leaf (secured with flush bolts or a similar latching system). Both leaves are fitted with self-closing hinges that automatically return each leaf to the closed position after use, a mandatory requirement for A-class fire-rated marine doors. Heavy-duty compression locking systems secure both leaves tightly against the steel frame. Optional marine-rated portholes (with fire-resistant glass) can be installed on one or both leaves for visual inspection without compromising safety. For additional protection, the door can be specified as weathertight or watertight to prevent ingress of rain, spray, or seawater. All exposed surfaces are treated with marine-grade anti-corrosion primer and can be finished with epoxy or polyurethane paint for enhanced durability.

Product parameters:

Key Features:

*A60 fire rating – Provides 60 minutes of fire and smoke containment per SOLAS/IMO standards.

*Double leaf design – Wide clear opening for equipment, stretchers, and high-traffic passage.

*Heavy-gauge steel construction – Withstands high temperatures, impact, and mechanical stress.

*Non-combustible insulation core – High-density ceramic fiber or rock wool for thermal protection.

*Intumescent smoke seals – Expand under heat to block smoke passage.

*Self-closing hinges on both leaves – Automatic return to closed position for safety compliance.

*Dual compression locking system – Active leaf with lock handle; passive leaf with flush bolts.

*Corrosion-resistant finish – Marine-grade primer plus optional epoxy or polyurethane coating.

*Optional marine portholes – Fire-resistant glass for visual access on one or both leaves.

*Optional weathertight/watertight – Additional protection against moisture ingress.

Typical Applications:

*Ship main engine rooms and large machinery spaces.

*Vessel main control rooms and bridge compartments.

*Offshore drilling platforms and FPSO units.

*Marine main escape routes and fire zone bulkheads.

*Passenger vessel main fire divisions.

*Cargo ship large compartment separations.

*Naval and coast guard vessels requiring wide access.

*Areas requiring stretcher or equipment passage.

For shipbuilders, marine engineers, and offshore facility managers requiring a wide-access, code-compliant fire door that combines thermal performance, structural strength, and corrosion resistance, the A60 Class Double Leaf Fireproof Door offers a robust, reliable, and essential solution for protecting crew, passengers, and critical assets at sea.