Engineered for Maximum Traction and Load-Bearing Durability
Defining the Global Standard for Steel Grating and Safety Platforms
Square Meters of Production Space
Auto-Welding Product Lines
Annual Metric Tons Output
Countries Exported Worldwide
Founded in 1993, Ningbo Jiulong Machinery Manufacturing Co., Ltd (NJMM) has evolved into a global titan in the steel grating industry. As a modern comprehensive enterprise, we integrate scientific research, precision design, and large-scale manufacturing. With two strategic production bases in the East and North of China, we specialize in high-strength serrated bar grating, railings, and platform systems. Our commitment is backed by ISO9001, CE, and GHOST certifications, ensuring that every weld meets international safety benchmarks.
Unlocking Slip Resistance and Structural Integrity
Serrated bar grating is specifically engineered for environments where moisture, oil, or debris create hazardous footing. Unlike plain surface grating, the "serrated" profile features notched bearing bars that provide a high-friction mechanical grip. This is critical for offshore oil rigs, chemical processing plants, and food manufacturing facilities.
Our serrated products utilize premium carbon steel, stainless steel, or aluminum. The most common treatment—Hot-Dip Galvanization—provides a sacrificial zinc layer that protects the base metal from oxidation. This process adheres to ASTM A123 and ISO 1461, ensuring a service life of 20-50 years in corrosive environments.
NJMM employs robot-controlled forge welding, which fuses the cross bars and bearing bars into a single, monolithic unit, eliminating structural weaknesses often found in manual arc-welding.
Supply Chain Resilience & Precision Automation
Our 6 sets of automatic banding robots and 12 self-developed pressure welding lines ensure 0.1mm tolerance accuracy, vital for large-scale modular installations.
Utilizing laser cutting and digital control panel tailoring, we can process irregular grating shapes directly from CAD drawings with zero material waste.
With an annual output exceeding 50,000 tons, we maintain deep stockpiles of raw materials, insulating global clients from price volatility and lead-time delays.
NJMM’s forge-welding technology uses high-voltage current combined with hydraulic pressure to forge the cross bars into the bearing bars. This creates a permanent joint that won't crack under heavy dynamic loads, unlike "hand-welded" alternatives common in smaller factories. This technical distinction significantly reduces the total cost of ownership (TCO) for facility managers.
Leading the Next Decade of Industrial Grating Innovation
The industrial grating market is shifting toward "Smart Grating" and "Sustainable Materials." NJMM is currently investing in the following R&D pathways:
Integration of graphene-enhanced zinc coatings to increase corrosion resistance by 300% in high-salinity maritime environments.
Embedded strain gauges within structural grating to monitor real-time load distribution and alert operators to structural fatigue in bridge decks.
Transitioning to hydrogen-smelted steel inputs to reduce the carbon footprint of industrial flooring by 40% by 2030.
Tailored Grating Systems for Diverse Global Sectors
Platform walkways and ditch covers for refineries. Recommended: JG325/30/100 serrated series for maximum drainage and safety.
Designed to withstand extreme wave impact and saltwater corrosion. NJMM offshore grating meets stringent CE safety standards.
Heavy-duty load-bearing grating for mining equipment protection and airport drainage systems capable of supporting aircraft weight.
Navigating International Standards with Ease
Procuring from NJMM is more than a transaction; it's a partnership supported by a global service network. We provide:
Full compliance with US (ASTM A1011), European (EN 14122), and Australian (AS 1657) standards for safety and quality.
Service networks in South America, Europe, Middle East, and Southeast Asia to provide on-site installation guidance.
Detailed CAD/BIM drawings provided pre-production to ensure 100% fit-on-site for complex architectural requirements.
Addressing the Technical Needs of Global Procurement Officers
Complete Industrial Solutions from Stairs to Railings
Jiulong