In the transition toward sustainable energy, Twisted Bar Grating serves as the primary flooring solution for wind turbine platforms, hydroelectric dams, and traditional power plants. Its ability to provide high-friction surfaces via twisted cross-bars ensures technician safety in high-altitude and humid environments.
Modern refineries require materials that withstand extreme chemical exposure. Our forge-welded solutions integrate seamlessly with digital twin monitoring systems, allowing for structural health tracking in offshore oil rigs where corrosion resistance is paramount.
With the rise of mega-cities, heavy-duty trench covers and walkway gratings are essential for drainage and ventilation in subway systems and high-density industrial parks, managing both heavy loads and rapid water runoff.
The global steel grating market is undergoing a significant shift toward automated forge-welding technology. Industry 4.0 has mandated that manufacturers move away from manual welding to ensure consistency and load-bearing predictability. NJMM, as a leader in this space, operates 12 advanced auto-welding lines, serving markets from the European Union to Oceania.
NJMM maintains a strategic presence with two major production bases in China, ensuring that even during global logistics disruptions, we maintain a 50,000-metric-ton annual output to fulfill large-scale international contracts.
As a certified "Green Factory," we utilize energy-efficient galvanization processes that reduce carbon footprints, aligning with the EU's Carbon Border Adjustment Mechanism (CBAM) requirements for industrial exports.
Founded in 1993, Ningbo Jiulong Machinery Manufacturing Co., Ltd (NJMM) has pioneered the design and manufacturing of steel grating, railings, and light steel structures. We are not just a manufacturer; we are a modern comprehensive enterprise integrating scientific research, design, and engineering construction.
NJMM offers engineering service and support, including the design and installation of the grating solutions and the provision of detailed drawings if required. NJMM is committed to a continuous process to enhance customer service through product quality and delivery. NJMM had got the ISO9001 Quality System Certificate, CE certificate, GHOST certificate and other international certificates.
Our products strictly adhere to international standards including YB/T4001.1-2007 (China), ANSI/NAAMM MBG531 (USA), BS4592 (UK), and AS1657 (Australia). This ensures that our Twisted Bar Grating is ready for immediate installation in any legal jurisdiction.
NJMM provides localized engineering support, translating complex architectural requirements into precise manufacturing drawings. Whether it's for the harsh winters of Russia (GHOST cert) or the coastal salinity of Southeast Asia, we adjust galvanization thickness and material grades accordingly.
Participated in drafting and revised the steel grating standard of YB/T4001 in 2019. In 2020, we successfully declared high-tech enterprise and municipal engineering center. Our "Longta" brand is recognized globally for its craftsman spirit and excellence.
Our roadmap involves the 100% integration of welding robots for irregular grating shapes, reducing human error and increasing the tensile strength of joints. Currently, we utilize 6 sets of automatic banding robots to ensure perfect finishes.
By implementing digital control panel tailoring and laser cutting, we can provide gratings with ±0.5mm tolerance, essential for modular construction and easy field assembly.
The future of NJMM lies in BIM (Building Information Modeling) compatibility. We are developing digital libraries that allow architects to drag and drop NJMM grating specifications directly into their 3D structural models, optimizing load calculations in real-time.
Widely used in petrochemical, refinery, and textile chemical industries. Recommended: JG255/30/100, JG325/30/100. Advantages: Ventilation, explosion-proof, and anti-skid performance.
Ideal for port terminals, shipbuilding, and offshore engineering. Recommended: JG705/30/100, JG1008/30/100. Built to withstand extreme dynamic loads.
Used in modern building materials industry and parking lots. Offers a modern style, easy installation, and zero maintenance while providing high light penetration.
Jiulong
