Founded in 1993, Ningbo Jiulong Machinery Manufacturing Co., Ltd (NJMM) has established itself as a global leader in the design and manufacture of high-performance steel gratings, industrial stair treads, and light steel structures. Our 30-year legacy is built on a foundation of scientific research, precision engineering, and a commitment to industrial safety.
Operating from two massive production bases in East and North China, NJMM manages 12 state-of-the-art automatic pressure welding lines. Our facilities are equipped with robotics, laser cutting, and digital tailoring systems, ensuring an annual output exceeding 50,000 metric tons.
We are not just a manufacturer; we are an engineering partner providing ISO9001, CE, and GHOST certified solutions to the world's most demanding projects in petrochemicals, mining, and offshore engineering.
In high-corrosion environments, our hot-dip galvanized JT series treads provide superior slip resistance and structural integrity. Our products are engineered to withstand saltwater exposure and chemical splash, meeting the rigorous demands of offshore oil rigs and chemical refineries.
From modern airports to automated distribution centers, our gratings and stair treads offer the durability required for high-traffic pedestrian and light vehicular loads. The "Longta" brand has been integral to China's major infrastructure milestones and is now exported globally.
Our heavy-duty G505-G1008 series gratings are designed for the mining sector, capable of supporting heavy equipment while maintaining high ventilation and drainage efficiency to prevent dirt and grime accumulation.
We are currently researching next-generation zinc-aluminum-magnesium coatings that offer 3x the corrosion resistance of standard galvanization, specifically for coastal and acidic environments.
Our R&D department is integrating BIM (Building Information Modeling) into our design phase, allowing global clients to virtually simulate tread stress and life-cycle performance before manufacturing begins.
NJMM is committed to a "Green Factory" roadmap. In 2021, we integrated closed-loop water treatment and waste heat recovery systems in our galvanizing plants, reducing our carbon footprint by 15%.
At NJMM, we bridge the gap between traditional craftsmanship and modern automation. Our Factory 4.0 initiatives include:
We provide comprehensive support for regional compliance, ensuring our products meet:
By eliminating intermediaries, NJMM provides Tier-1 pricing, allowing large-scale projects to maximize ROI without compromising on structural safety or finish quality.
Our team of 50+ engineers provides detailed CAD and 3D modeling support, ensuring that custom stair tread dimensions and loading requirements are perfectly aligned with project specs.
Strategic locations in East and North China provide direct access to major international shipping ports, ensuring reliable global logistics to South America, Europe, and the Middle East.
Welded fixing with checkered plate nosing. Ideal for permanent structures where vibration resistance is paramount.
Bolted fixing with various nosing profiles. Designed for rapid assembly and modular construction projects.
Enhanced serrated profiles for maximum slip resistance in greasy or wet environments.
Custom heavy-duty variants for industrial platforms requiring load capacities exceeding 5kN/m².
NJMM is a modern comprehensive enterprise integrating scientific research and design, machinery manufacturing and engineering construction. We believe our products are your best choice for safety and durability.
Company Vision: To be the leader in the steel grating market, the preferred supplier & a good corporate citizen.
Enterprise Mission: To provide top quality products & services with global expertise; To build a harmonious environment for employees; To contribute to industry advancement.
Jiulong
