In the modern architectural landscape, vertical circulation systems have evolved from mere functional components to critical assets in fire safety, acoustic management, and structural longevity. Concrete filled metal pan stairs represent the pinnacle of this evolution. As global enterprises expand their footprints in high-density urban environments and massive industrial complexes, the demand for stair systems that offer low vibration, high fire ratings, and rapid onsite installation has surged.
In North America and Europe, the retrofitting of old industrial warehouses into modern office hubs requires staircases that can withstand high traffic while providing superior acoustic insulation. Concrete-filled pans act as a natural sound dampener, reducing the "hollow" noise associated with traditional steel treads.
In the Middle East and Southeast Asia, rapid infrastructure development in oil & gas and chemical sectors demands egress routes that resist corrosion and extreme heat. Our hot-dip galvanized metal pans, once filled with high-strength concrete, provide an indestructible egress path.
With tightening IBC (International Building Code) and Eurocode regulations, the emphasis on non-combustible vertical transit has never been higher. Concrete filled stairs are the gold standard for high-rise fire exit enclosures.
Founded in 1993, NJMM has spent three decades refining the art of steel fabrication. As a modern comprehensive enterprise, we integrate scientific research, AI-driven design, and robotic manufacturing to deliver over 50,000 metric tons of steel products annually.
Our technical route focuses on three pillars: Material Purity, Welding Integrity, and Surface Protection. By utilizing 6 sets of automatic banding robots and laser cutting technology, we ensure that every metal stair pan is perfectly squared, preventing concrete leakage and ensuring a seamless fit during site assembly.
Using CAD and BIM (Building Information Modeling), we simulate load-bearing capacities under seismic stress to ensure stair treads exceed local building codes.
Pressure welding equipment lines ensure deep penetration welds, creating a rigid skeleton that prevents the metal pan from warping during the heavy concrete pouring process.
Post-fabrication galvanization according to ISO 1461 ensures that even the hidden undersides of the pans are protected from moisture-induced corrosion for decades.
As the industry moves towards "Green Construction," NJMM is leading the way in sustainable fabrication. Our future roadmap includes:
NJMM’s global service network spans South America, Europe, Oceania, Africa, and West Asia. We understand that Compliance is the cornerstone of reliability.
ISO9001:2015, ISO45001:2018, ISO14001:2015, CE Certificate, and GHOST certification for CIS regions.
Strategically located production bases in East and North China allow for efficient shipping through Ningbo and Tianjin ports.
Provision of detailed shop drawings and installation support for complex industrial platforms and platform walkways.
High-durability walkways and stair treads (JG505/30/100).
Ventilation screens and heavy-duty ditch covers.
Corrosion-resistant stanchions and handrails.
Ceilings, shelves, and architectural fencing.
Jiulong
