Founded in 1993, Ningbo Jiulong Machinery Manufacturing Co., Ltd (NJMM) has evolved from a local manufacturer into a global titan in the steel grating industry. As a pioneer in the design and manufacturing of steel grating, railings, and light steel structures, we have integrated scientific research with heavy-duty machinery manufacturing and large-scale engineering construction.
Our commitment to E-E-A-T (Experience, Expertise, Authoritativeness, Trustworthiness) is backed by our participation in drafting the National Steel Grating Standard (YB/T4001) in 2019 and being recognized as a high-tech enterprise and "Green Factory" in 2021.
How NJMM Leverages Advanced Robotics to Outperform Global Competitors
We operate 12 self-developed automatic pressure welding equipment lines and 6 sets of automatic banding robots. This "Factory 4.0" approach ensures millimetric precision that manual welding cannot replicate.
With dual production bases in East and North China, NJMM mitigates logistical risks. Our massive raw material inventory and in-house galvanizing processes ensure stable lead times even during global market volatility.
Utilizing laser cutting and digital control panel tailoring, every piece of grating is tracked through a QR-coded system, ensuring 100% traceability from raw steel to the final galvanized finish.
Strategic Steel Grating Applications for Large-Scale Projects
Platforms and walkways designed for high-corrosion environments. Our hot-dip galvanizing exceeds ASTM A123 standards, providing 50+ years of service life in refineries and chemical plants.
Heavy-duty G705/JG1008 series gratings are optimized for port terminals and offshore drilling rigs, offering superior anti-slip performance (serrated type) and massive load-bearing capacity.
Drainage trench covers, aesthetic ceiling gratings, and ventilation screens for airports and urban transit systems. Lightweight yet structurally superior to traditional concrete covers.
The Evolution of Steel Grating in the Next Decade
Transitioning to zero-discharge galvanizing plants. NJMM is currently optimizing lead-free zinc alloys to reduce environmental impact while maintaining cathodic protection efficiency.
Integration of IoT sensors into heavy-duty gratings to monitor structural integrity and load stress in real-time, specifically for bridges and mining platforms.
Development of hybrid steel-aluminum-FRP gratings that combine the strength of steel with the extreme weight savings of composites for aerospace and high-altitude infrastructure.
Procuring from China requires more than just a low price; it requires Quality Assurance and Compliance Security. NJMM provides full localized support for international EPC (Engineering, Procurement, and Construction) companies.
NJMM successfully exports 20,000+ tons annually to:
Technical & Commercial Insights for Professional Buyers
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