Ningbo Jiulong Machinery Manufacturing Co., Ltd (NJMM), established in 1993, stands as the global benchmark for Galvanised Grating Manufacturing. As a modern comprehensive enterprise, we integrate sophisticated scientific research with precision engineering to deliver light steel structures that redefine industrial durability. With over three decades of empirical expertise, NJMM has evolved into a powerhouse that bridges the gap between raw material resilience and architectural utility.
Our operational footprint spans two massive production bases in East and North China, housing 12 automated steel grating pressure-welding lines. This capacity is augmented by robotic welding cells, high-precision laser cutting units, and digital control panel tailoring, ensuring that every square meter of grating meets the stringent requirements of international engineering standards. Our annual output exceeds 50,000 metric tons, serving critical sectors from petrochemical refineries to offshore wind farms.
While standard hot-dip galvanizing offers excellent protection, NJMM is pioneering the use of Zinc-Aluminum-Magnesium (ZAM) alloy coatings. This technical advancement provides up to 3x higher corrosion resistance in high-salinity maritime environments compared to traditional galvanization. Our roadmap includes integrating Real-time Coating Thickness Monitoring using ultrasonic sensors to ensure 100% uniformity across complex geometric surfaces.
The future of steel grating lies in the "Strength-to-Weight" ratio. By utilizing advanced Finite Element Analysis (FEA), we are developing grating patterns that reduce steel consumption by 15% without compromising load-bearing capacity. This contributes directly to "Green Steel" initiatives and reduces the dead load on supporting structures in high-rise industrial modules.
NJMM is committed to a sustainable supply chain. Our "Green Factory 2030" initiative involves transitioning to electric-powered furnaces for the galvanization process and implementing a closed-loop water recycling system that eliminates chemical runoff, aligning with global ESG (Environmental, Social, and Governance) requirements.
The global industrial landscape demands more than just a product; it requires a resilient supply chain. NJMM's Factory 4.0 architecture utilizes an Integrated Manufacturing Execution System (MES) that tracks every batch of raw steel from the mill to the final hot-dip bath.
In environments where volatile organic compounds and corrosive gases are present, our gratings provide essential ventilation and heat dissipation. Recommended: JG405/30/100 for high-span walkways.
Saltwater corrosion is the ultimate test. Our heavy-duty hot-dip galvanization meets the ISO 1461 standard, ensuring a service life of 25+ years in harsh offshore platforms and shipbuilding applications.
Heavy-duty rack grating supports the automation of modern warehouses. Our plain-type forge-welded bars provide the flat surface required for AGVs (Automated Guided Vehicles) while maintaining airflow.
NJMM's products are not merely components; they are engineered solutions. From Trench Covers with optimized drainage flow to Ceiling Screens for modern architectural aesthetics, we adapt the physics of steel to the needs of the industry.
Experience, Expertise, Authoritativeness, and Trustworthiness (E-E-A-T) are the pillars of NJMM. We don't just claim quality; we prove it through rigorous international certification and participation in standard-setting.
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