Metal stair riser covers and treads are no longer just utilitarian components; they are critical safety assets in the modern industrial landscape. As global safety standards like OSHA and CE become more stringent, the demand for high-precision, anti-slip, and corrosion-resistant metal solutions has reached an all-time high. In this white paper, we explore how Ningbo Jiulong Machinery Manufacturing Co., Ltd (NJMM) is leading this transformation through advanced material science and robotic fabrication.
Modern industrial facilities—from offshore oil rigs to high-tech pharmaceutical plants—require stair systems that withstand extreme loads, chemical exposure, and high traffic. The JT-series galvanized steel treads represent a culmination of 30 years of manufacturing experience, combining the tensile strength of carbon steel with the long-term protection of hot-dip galvanization.
Ningbo Jiulong Machinery Manufacturing Co., Ltd (NJMM) was founded in 1993 and has grown into a modern comprehensive enterprise integrating scientific research, design, and machinery manufacturing. With two major production bases in East and North China, we operate 12 automatic steel grating welding lines and utilize state-of-the-art robotic welding, laser cutting, and digital control tailoring.
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Auto-Welding Lines
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China's integrated supply chain for steel production allows NJMM to offer premium quality at highly competitive price points. By localizing raw material procurement and utilizing self-developed automatic pressure welding equipment, we minimize waste and optimize production costs.
Our engineering service includes detailed shop drawings and custom fabrication for irregular grating shapes. With 6 sets of automatic banding robots, we ensure that every metal stair riser cover meets precise architectural dimensions without the need for on-site modifications.
Located near Ningbo Port, one of the world's largest, we provide fast delivery to South America, Europe, Oceania, and the Middle East. Our logistics infrastructure ensures that 50,000 tons of annual production reach global sites on time.
Highly corrosive environments require JT-series treads with superior hot-dip galvanization. The grid design ensures ventilation and heat dissipation while preventing the accumulation of hazardous liquids.
Recommended: JG325/30/100, JG405/30/100.
Shipbuilding and offshore platforms demand high-strength materials that resist salt spray. Our serrated forge-welded bar grating provides essential anti-skid performance in wet conditions.
Certifications: CE, ISO9001, GHOST.
For modern parking lots, sewage disposal plants, and airports, aesthetic appeal is as important as functionality. Our steel gratings offer a "neat and simple appearance" that complements modern architectural styles.
The Hot-Dip Galvanizing (HDG) process at NJMM follows the most rigorous international standards. By immersing the fabricated metal stair riser covers in molten zinc, we create a metallurgical bond that provides cathodic protection, even if the surface is scratched.
Using steel grating instead of solid plate reduces steel consumption by up to 30% without compromising load-bearing capacity. This not only lowers the overall material cost but also reduces the weight on the supporting steel structure, leading to macro-level savings in building design.
Our JT1 to JT8 series covers everything from simple bolt-on designs to welded configurations with anti-slip nosing. The nosing (front edge) is specifically designed to be highly visible and provides extra grip where the foot makes initial contact.
For global procurement managers, selecting a supplier isn't just about price. It's about reliability, quality control, and compliance.
NJMM participated in drafting the 2019 steel grating standard (YB/T4001). We hold ISO9001:2015, ISO45001:2018, and ISO14001:2015 certifications.
Awarded as a "Green Factory" in 2021, we optimize energy consumption during the pressure welding and galvanization stages.
We provide full engineering support, from initial design concepts to the provision of detailed 3D installation drawings.
Jiulong