Engineered structural systems built to meet demanding global specifications and retail display standards.
Nanjing Dulis Warehouse Equipment Co., Ltd. (DuraRacks) - Engineering safer, higher, and stronger storage configurations since 2014.
Established in 2014, Nanjing Dulis Warehouse Equipment Co., Ltd. (operating globally under the brand DuraRacks) is a premier industrial rack manufacturer headquartered in Nanjing, China. Boasting over 12 years of industry experience and 9 years of direct export experience, our facility spans a modern industrial building area of 38,000 square meters. We specialize in high-capacity pallet racking, drive-in systems, and automated storage solutions, generating an annual export revenue of $32 million USD.
Quality and structural integrity form the bedrock of our manufacturing philosophy. Our dedicated team of 45 certified QA personnel implements rigorous quality control processes aligned with ISO9001, CE, and FEM standards. Every batch undergoes comprehensive product inspection methods, including ultrasonic weld flaw detection, mechanical tensile testing, static and dynamic load capacity testing, and salt spray corrosion resistance evaluation.
Supported by a robust network of over 1,200 qualified supply chain partners, DuraRacks operates as an integrated direct-export manufacturer. Our primary overseas markets encompass North America, Western Europe, and Australia. We serve a diverse portfolio of client types, primarily catering to 3PL logistics hubs, large-scale e-commerce fulfillment centers, cold storage operations, and heavy industrial manufacturing plants.
Driven by an experienced team of 68 R&D engineers, DuraRacks delivers advanced structural Finite Element Analysis (FEA) and customized CAD/BIM warehouse layout simulations. We offer full OEM/ODM customization options, tailored seismic load engineering, special powder-coating finishes, and custom beam profile dimensions. Last year alone, our engineering team launched 85 new product innovations and patented racking components, ensuring cutting-edge storage efficiency for our global clientele.
A step-by-step visual look into our high-precision manufacturing pipeline, utilizing heavy robotics and advanced metallurgy.
How direct integration with regional supply chains translates into unparalleled performance, cost control, and delivery speed.
Our proximity to premium domestic steel mills in Jiangsu and Anhui ensures a steady supply of high-grade Q235B and Q355B carbon steel. By cutting out third-party steel brokers, we secure stable raw material pricing and guarantee chemical composition consistency. This allows us to provide structural profiles that endure strict weight limit tests without structural failure.
By implementing automated multi-station cold rolling mills, high-speed CNC punching arrays, and robotic welding stations (such as OTC and Fanuc units), we achieve tight dimensional tolerances within ±0.5mm. This degree of precision ensures seamless field assembly, eliminating alignment issues common with legacy manual manufacturing.
Nanjing is a major shipping hub along the Yangtze River, providing us direct access to the Port of Shanghai. This dual-access logistics setup—river barging paired with deep-sea ports—reduces inland freight costs and transit times, allowing us to offer highly competitive FOB/CIF rates to international buyers.
Different environments require specialized load dynamics. We engineer high-performance systems for diverse sectors.
| Application Scenario | Critical Engineering Challenges | DuraRacks System Design Solutions | Load Capacity Requirements |
|---|---|---|---|
| 3PL & E-commerce Fulfillment | High selective turnover, variable SKU dimensions, dynamic load factors. | Adjustable selective pallet racking with wire mesh deck overlays. | 1,000 kg – 3,500 kg per level |
| Cold Storage Facilities | Sub-zero temperature embrittlement, condensation corrosion risk. | Structural steel systems featuring hot-dip galvanized finish (HDG). | Up to 2,000 kg per pallet position |
| Heavy Industry & Manufacturing | Bulk raw materials, concentrated weight, tooling dies. | Heavy-duty structural channel racks with integrated rack protectors. | 1,500 kg – 5,000 kg per level |
| Pharmacy & Boutique Retail | Visual clean aesthetics, quick modular adjustment, high safety. | Light-duty double-sided gondola & wood-metallic display stands. | 50 kg – 150 kg per shelf |
To resist scratching, chipping, and environmental corrosion, all DuraRacks components undergo a 7-stage chemical pre-treatment process followed by electrostatic epoxy-polyester powder coating (thickness: 70–110 microns). Our systems endure up to 500 hours of continuous salt-spray testing without showing signs of rust.
Using Finite Element Analysis (FEA) software, our engineering team designs racking systems that comply with global seismic parameters, including US FEMA and Australian AS4084 standards. We calculate frame thickness, floor anchor sizing, and diagonal bracing arrays to withstand high-energy seismic activity.
Before importing metal shelving, supply chain managers must verify key structural and regulatory benchmarks.
CE marking confirms that our metal shelving systems comply with EU health, safety, and environmental protection standards. For structural steel racking, this involves meeting EN 15512 (Steel static storage systems – Adjustable pallet racking systems – Principles for structural design) and EN 15635 (Application and maintenance of storage equipment).
For the North American market, conforming to the Rack Manufacturers Institute (RMI) standard ANSI MH16.1 is vital. This standard dictates structural testing, member design guidelines, and calculations for industrial steel storage racks and frame structures.
Our products exported to Australia are engineered to meet the latest AS4084 specifications, governing structural design tolerances, load testing protocols, and safety practices for steel storage racking installations.
Industry 4.0 is transforming warehousing. Here is how DuraRacks integrates modern technologies.
Automated Storage and Retrieval Systems (ASRS) require strict manufacturing tolerances. Even minor deviations can cause automated cranes or shuttle units to fail. We fabricate racking systems with millimetric accuracy to support high-density ASRS shuttle cart grids.
We use green, low-VOC TGIC-free powder formulations. These coatings resist moisture, chemicals, and UV exposure while reducing the environmental footprint of our factory operations, helping clients meet environmental compliance requirements.
We are currently developing smart racking systems integrated with strain-gauge load sensors. These sensors alert warehouse operators in real-time if a storage bay experiences structural overloading or damage from forklift impact.
Common questions from procurement agents, logistics engineers, and warehouse managers regarding metal shelving design and compliance.
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