Premium grade displays, heavy-duty retail shelving, and industrial storage configurations customized to international standards.
Your Trusted Global Partner for Complex Heavy-Duty Display Systems and Advanced Warehouse Engineering Racking Systems.
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.
Our operation is built on structural engineering excellence. Whether custom fabricating heavy-duty retail gondolas or engineering high-bay cold storage pallet racking, our structural systems deliver the safety and durability demanded by global retailers, distribution operations, and manufacturing plants.
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R&D Engineers
How macro-retail dynamics, safety standards, and changing shopper demographics are redesigning physical retail infrastructure.
Beverage products represent some of the highest mass-to-volume configurations in modern retail. Standard display racks fail under the constant static loads of heavy glass bottles and stacked aluminum cans. The industry has shifted toward high-yield steel frames (such as Q235B and Q345B) optimized to prevent lateral deflection and micro-fatigue over millions of load cycles.
Global brands are prioritizing the circular economy. Modern beverage display units must be 100% recyclable, utilizing zero-VOC powder-coated finishes that resist scratching while keeping chemical emissions out of retail environments. Highly modular designs allow quick parts replacement, avoiding complete rack replacement when only a single base element is damaged.
Modern retail locations use IoT-enabled smart shelves featuring weight sensors, RFID capabilities, and integrated electronic shelf labels (ESL). Modern displays are constructed to route clean wiring and house electronic controllers without compromising the structural integrity of structural gondola uprights.
Translating architectural concepts and strict loading specifications into physical retail and industrial assets.
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.
Our engineers perform digital stress tests on racking configurations, simulating complex load scenarios. This mathematical analysis ensures that column load capacities, deflection ratios, and seismic structural nodes meet safety factors exceeding 1.5x of the maximum theoretical load.
By producing rich LOD-300 Building Information Modeling (BIM) files, we ensure that our storage fixtures integrate cleanly into structural site designs, coordinating seamlessly with sprinkler networks, HVAC, and forklift pathways.
For installations in active fault zones, our engineers redesign seismic footings, baseplates, and upright profiles, satisfying strict structural codes like FEMA, AS4084, and regional seismic safety standards.
Inside our 38,000 sqm production facility: automated machinery and precision engineering steps that define the DuraRacks standard.
How DuraRacks maintains zero-defect engineering configurations for global high-risk environments.
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.
Non-destructive ultrasonic wave testing locates internal gas pockets, slag inclusions, or cold lap discontinuities in major structural welds, preventing on-site failure.
Every lot of structural steel is sample-tested to confirm minimum yield points, elongation indices, and absolute tensile limit specifications.
Racks are physically loaded with physical test weights exceeding design limits up to 1.5x to evaluate real-time deflection values.
To assure long-term life in damp storage facilities or coastal environments, our coating lines undergo continuous salt fog testing to confirm corrosion resistance.
Connecting international buying networks to optimized ocean freight pathways and reliable supply sources.
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.
Our integrated partner base allows us to source specialized steels, composite plastics, and high-tensile fasteners rapidly. This vertical control shields our clients from volatile raw material pricing fluctuations and sudden component shortages.
Through Nanjing's logistics nodes and nearby ocean terminals in Shanghai, we optimize container packing densities, minimizing ocean freight costs per unit and streamlining international customs procedures.
We supply detailed mechanical assembly layouts, 3D visualization animations, and, if required, send certified installation supervisors to lead local contractor crews during large warehouse setups.
Our long-term commitment to innovation, digital warehousing, and ultra-low environmental footprint manufacturing.
We are actively transitioning our raw material procurement to green steel processes that use hydrogen reduction instead of traditional coal blast furnaces, targeting a 30% carbon-equivalent reduction by 2026.
By introducing fully automated fiber laser cutting matrices and high-precision welding robotic stations, we continue to lower mechanical tolerances below 0.2mm, assuring consistent fit-ups.
We are patenting a proprietary cold-temperature powder formulation that prevents structural metal coatings from cracking and chipping inside extreme -30°C refrigeration and blast-freezing operations.
Direct technical answers addressing engineering, international compliance, and custom manufacturing projects.
What steel grades are used in DuraRacks beverage storage and retail systems?
We primary employ high-strength hot-rolled structural steel grades Q235B and Q345B (conforming to GB/T 1591 guidelines). These steel grades deliver excellent weldability and yield strengths up to 345 MPa, ensuring safety under high static loads.
How does DuraRacks ensure seismic load compliance for global shipping?
Our 68 engineering experts configure every rack layout to meet local seismic zone requirements. Using Finite Element Analysis (FEA) and customized baseplates, we calculate structural designs satisfying AS4084 (Australia) and RMI/FEMA (United States) seismic criteria.
Do you offer OEM/ODM services for specialized supermarket displays?
Yes, we specialize in high-capacity OEM/ODM services. We can customize sheet metal thicknesses, roll-formed profile shapes, wire grid sizes, wood/plastic hybrid integrations, and custom branding profiles according to client drawings or specifications.
What type of powder coating finishes do you apply to the steel racks?
We utilize automated electrostatic thermosetting powder coating lines. Our standard coatings are epoxy-polyester blends providing exceptional scratch, impact, and chemical resistance, with an average coating thickness between 60 to 90 microns.
What certifications does DuraRacks hold for international logistics markets?
Our complete manufacturing plant and products are certified under ISO9001:2015 Quality Management Systems, hold the CE mark for structural execution compliance, and are fully aligned with the European FEM 10.2.02 design standards for warehouse storage.
How do you prevent metal rusting in cold storage beverage applications?
For cold chain applications, we utilize pre-galvanized coils or hot-dip galvanized finishes complying with ISO 1461. This creates a sacrificial zinc protective barrier, resisting condensation and oxidation in cold-storage environments.
What is your typical production lead time for large global projects?
Depending on configuration complexity and order volume, standard lead times range between 20 to 35 days from structural drawing sign-off. We maintain a reliable supply network of 1,200 partners to accommodate tight project schedules.
Do you supply CAD files and 3D mockups prior to manufacturing?
Yes, our R&D department delivers comprehensive CAD drawings, 3D render mockups, and LOD-300 BIM models for structural layout planning and coordination prior to tooling and fabrication.
What testing parameters are applied during your QA processes?
Our 45-person QA department conducts raw material chemical analysis, mechanical tensile strength verification, weld depth ultrasonic testing, static and dynamic load capacity testing, and paint adhesion tests.
Can you arrange customized delivery and logistics options?
Yes. We offer flexible terms including FOB, CIF, DDU, and DDP. Our logistics team handles structural bundle packaging to maximize container volume while protecting critical profiles from shipping damage.
Explore our structural warehouse solutions designed for heavy pallet weights, inventory control, and logistical durability.
DuraRacks
