Founded in 1993, Ningbo Jiulong Machinery Manufacturing Co., Ltd (NJMM) has established itself as a global leader in the design and manufacturing of high-performance steel and stainless wire grates. Our expertise spans across railings, platforms, and light steel structures, making us a comprehensive modern enterprise that integrates scientific research, precision manufacturing, and engineering construction.
Our commitment to E-E-A-T (Experience, Expertise, Authoritativeness, Trustworthiness) is backed by 30 years of industry dominance and a relentless focus on information gain for our clients—providing deeper insights into material science and structural integrity than standard suppliers.
Annual Metric Tons Output
Auto-Welding Product Lines
By leveraging advanced robotics and laser cutting technology, Chinese factories like NJMM provide precision that exceeds traditional fabrication. Our 12 self-developed automatic pressure welding lines ensure consistency across massive bulk orders.
Strategically located with 2 production bases in the East and North of China, we provide seamless logistics. Our proximity to major ports like Ningbo allows for rapid global distribution to South America, Europe, and Oceania.
NJMM is a "Green Factory" and a high-tech enterprise. We hold ISO9001:2015, ISO45001:2018, and CE certifications, ensuring every grate meets the stringent requirements of international building codes.
The global industrial landscape is shifting towards sustainability and durability. Here is where the industry is heading:
In high-corrosion environments, our stainless wire grates and trench covers provide the necessary ventilation, heat dissipation, and anti-skid safety. Recommended: JG325/30/100 and JG405/30/100 series for maximum loading and drainage capacity.
Used extensively for platform walkways, ceilings, and ventilation screens. The sleek, modern style of NJMM gratings enhances the aesthetic of architectural projects while maintaining structural integrity in transport hubs and sewage treatment plants.
For international buyers, the challenge isn't finding a supplier—it's finding a partner. Here are the critical factors for global procurement:
Does the factory offer robot-assisted irregular grating fabrication? NJMM provides customized solutions for complex geometric platforms.
Ensure your supplier participated in drafting national standards (like NJMM's involvement in YB/T4001-2019) to guarantee technical authority.
Demand precise loading charts. Our JG series provides verified data on steel consumption reduction without compromising safety.
Stainless steel (304/316) offers inherent corrosion resistance without the need for a coating. It is ideal for food processing, pharmaceutical, and highly acidic or saline environments where galvanization may eventually flake or wear off.
With an annual output of 50,000 metric tons and 12 automatic product lines, NJMM can handle large-scale exports efficiently. Typical lead times depend on customization but are optimized via our high-speed auto-welding equipment.
Yes. NJMM offers full engineering services, including detailed site drawings, installation layout design, and technical support to ensure seamless assembly at the project site.
Absolutely. We have obtained the ISO14001:2015 Environmental Management System Certification and were officially included in the "Green Factory" pool of enterprises in 2021.
Ningbo Jiulong Machinery Manufacturing Co., Ltd (NJMM) is not just a manufacturer; we are a partner in global development. Covering an area of 450,000 square meters with a workshop area of 30,000 square meters, we have the physical infrastructure to back our engineering claims. Our 12 automatic pressure welding lines are self-developed, showcasing our deep technical expertise and commitment to Craftsman Spirit.
Our vision is to be the leader in the steel grating market, the preferred supplier for global enterprises, and a good corporate citizen. We contribute to the advancement of both industry and society by providing top-quality products like our "Longta" steel grating, which is widely recognized in renowned projects across China and 13+ countries worldwide.
We believe our products—from trench covers to complex stair treads—are your best choice for safety, durability, and economic efficiency. With rich experience and integral quality control, NJMM continues to redefine the standards of the light steel structure industry.
Jiulong
