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View ProductPioneering precision metal fabrication, smart manufacturing, and robust architectural hardware systems since 1993.
Ningbo Jiulong Machinery Manufacturing Co., Ltd (NJMM) was founded in 1993, is mainly engaged in the design and manufacturing of steel grating, railings, platforms and other light steel structures. It is a modern comprehensive enterprise integrating scientific research and design, machinery manufacturing and engineering construction.
We currently have 2 production bases in the East and North of China, there are 12 steel grating auto welding product lines, as well as complete auxiliary processing equipment and testing facilities, like robots welding, laser cutting, digital control panel tailoring etc. Our annual output of steel gratings and allied products, including trench covers, stair treads, stanchions, handrails, fences, is over 50,000 metric tons.
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.
We believe our products are your best choice for high-performance architectural and industrial stainless steel configurations.
An authoritative analysis on material science evolutions, surface passivation techniques, and next-gen wire matrix engineering.
Moving beyond standard 304 grades, modern high-end sink grids and industrial load frameworks integrate 316L surgical-grade austenitic stainless steel. This ensures superior resistance against pitting corrosion induced by chlorine, harsh cleansing agents, and aggressive industrial effluents.
Utilizing state-of-the-art multi-axis robotic resistance welding and laser cross-joint fusion, NJMM eliminates weak solder joints, ensuring structural integrity that withstands intense thermal shocks and heavy mechanical load cycles.
Our eco-friendly closed-loop production cycles incorporate zero-discharge acid pickling and electro-polishing treatments, aligning with global ISO14001 benchmarks and reducing carbon intensity per ton of finished stainless steel output.
How digital twins, intelligent inventory systems, and automated fabrication platforms secure uninterrupted global supply streams.
By implementing real-time IoT sensors across our 12 auto-welding production lines, machine parameters are autonomously adjusted to maintain optimal tensile strength and dimensional tolerances down to ±0.05mm, eliminating human error and batch variances.
Strategic positioning near major international deep-water ports allows streamlined container consolidation. Automated warehousing systems guarantee that standard custom orders are processed, quality-inspected, and dispatched within industry-leading timeframes.
Engineered for extreme performance across petrochemical, heavy manufacturing, marine architecture, and high-end commercial infrastructure.
Highly resistant to acidic vapours, extreme temperature fluctuations, and heavy foot traffic, our grating and platform arrays deliver fail-safe performance in corrosive refinery environments.
Built with marine-grade alloys and treated with advanced passivated finishes to withstand salt-spray corrosion, ensuring long-term structural reliability on offshore drilling rigs and coastal port terminals.
From custom architectural stair treads to sleek drainage covers and precision-welded interior metallic components, offering modern visual aesthetics combined with structural durability.
Meeting stringent international standards to grant global enterprise buyers absolute regulatory peace of mind.
As an industry leader, NJMM operates under a certified ISO9001:2015 Quality Management System, ISO14001 Environmental Management System, and ISO45001 Occupational Health & Safety System. Furthermore, our product lines carry mandatory CE certifications, GOST approvals, and comply with national standards such as the YB/T4001 steel grating code—in the drafting of which NJMM played a direct role as a key contributor.
Our dedicated engineering consultancy team provides overseas clients with comprehensive CAD layout drawings, load-bearing calculations, and tailored on-site installation guidance, ensuring total compliance with local building codes across South America, Europe, Oceania, and Southeast Asia.
Addressing critical technical, logistical, and commercial inquiries regarding bulk stainless steel grid sourcing.
We primarily utilize AISI 304 and AISI 316/316L stainless steel. For environments exposed to heavy saline, chlorine, or chemical scrubbing, 316L is strongly recommended for its enhanced pitting resistance equivalent.
Yes. Equipped with 2 dedicated irregular grating fabrication platforms, advanced CNC laser cutters, and automated robotic arms, we specialize in tailor-made geometries matching exact CAD specifications.
To maximize freight efficiency and maintain cost competitiveness, our standard export MOQ is flexible depending on item specifications, typically starting at 1 metric ton or structured container loads.
Every production batch undergoes rigorous spectral material analysis, weld penetration tests, dimensional gauge checks, and corrosion resistance testing in our certified municipal engineering testing center before packaging.
Discover complementary heavy-duty structural gratings, trench covers, and modular railing systems.
CE Certification GALVANIZED INDUSTRIAL STEEL STRUCTURE STAIR TREAD JT8 Suppliers, Factory
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Jiulong
