Engineered to deliver structural stability, modular expandability, and optimal load distribution across demanding commercial applications.
A global manufacturing powerhouse with comprehensive supply chain integration, serving Tier-1 e-commerce operators, 3PL logistics networks, and heavy-industry distribution centers.
Established in 2014, Nanjing Dulis Warehouse Equipment Co., Ltd. (operating globally under the premier industrial brand DuraRacks) has solidified its position as a world-class outdoor and industrial storage racking manufacturer. Headquartered in the manufacturing hub of Nanjing, China, our company represents the pinnacle of high-capacity storage engineering. Through over 12 years of industry experience and 9 years of direct export experience, we have built a reputation for designing systems that thrive under heavy structural loads and harsh environmental conditions.
Our expansive, fully automated facility spans 38,000 square meters, utilizing cutting-edge cold rolling, multi-station punching, and automated electrostatic powder coating lines. We produce high-capacity pallet racking, structural steel mezzanines, drive-in rack structures, and highly specialized automated storage and retrieval systems (AS/RS). Our high-caliber engineering team of 68 R&D engineers utilizes advanced Finite Element Analysis (FEA) to simulate extreme seismic, wind, and loading conditions, offering tailor-made OEM/ODM rack configurations for clients in North America, Western Europe, Australia, and beyond.
Quality and structural integrity form the bedrock of our manufacturing philosophy. At DuraRacks, every weld, profile bend, and coating layer is subjected to rigorous verification. We maintain a dedicated team of 45 certified QA/QC personnel who implement comprehensive inspections at every phase of the production cycle.
Our quality management systems are fully certified to comply with ISO9001, CE, and FEM (European Federation of Materials Handling) 10.2.02 racking standards. Every production run undergoes structural integrity and durability assessments, ensuring our industrial and outdoor racking systems endure years of heavy operational use without safety compromises.
Last year, our engineering team launched 85 new product innovations and patented racking components, ensuring our client installations remain at the cutting edge of warehousing logistics.
Leveraging deep industrial clusters, direct raw material pipelines, and unparalleled manufacturing scale to deliver cost efficiencies to global partners.
DuraRacks operates in Nanjing, adjacent to China's leading structural steel manufacturers (such as Baosteel and Shagang Group). This direct supply chain guarantees priority access to premium Q235B and Q355B structural carbon steel. We bypass intermediate distributors, shielding our partners from volatile spot market prices and securing stable lead times.
Unlike regional suppliers who outsource steel slitting, cold rolling, or galvanization, DuraRacks performs 100% of these tasks in-house. Our 38,000㎡ facility controls every stage, starting from hot-rolled steel coils, passing through cold-rolling mills and CNC multi-station punches, all the way to our automated powder-coating lines.
For outdoor storage systems, standard powder coating is prone to micro-fractures under UV exposure. DuraRacks utilizes professional hot-dip galvanization facilities in our immediate industrial cluster, dipping structural steel components into molten zinc at 450°C. This bonds a thick, durable zinc-iron alloy layer (exceeding 85 microns), protecting steel profiles from corrosion.
Visualizing the production sequence and advanced heavy machinery driving DuraRacks' 38,000-square-meter facility.
Purchasing heavy structural racking from an overseas supplier presents compliance challenges. For procurement directors across the US, EU, and Australia, local structural codes are non-negotiable. At DuraRacks, we address local regulatory requirements directly, ensuring smooth custom clearance, engineering certification, and insurance approvals for your facilities.
Industrial storage racks are classified as structural systems in many jurisdictions, meaning they are subject to building permit regulations. Our team collaborates with local engineering firms to provide calculations that comply with local guidelines:
Outdoor storage racks face environmental challenges like UV exposure, rain, snow, and thermal cycles. Conventional indoor powder coatings degrade under UV exposure within months, exposing the steel to moisture. DuraRacks utilizes a dual-layered protection system:
First, we apply an electrodeposited zinc-rich primer, followed by a topcoat of outdoor-grade polyester powder coating. This creates a barrier against moisture and UV radiation. For coastal or high-humidity applications, our Hot-Dip Galvanization (HDG) line delivers a protective coating thick enough to achieve C4 or C5 corrosion resistance classes (ISO 12944), extending the rack's service life to over 20 years in harsh outdoor environments.
From deep-freeze cold storage to heavy machinery storage yards, our structural configurations are engineered to perform.
Freezer facilities require space optimization due to high cooling energy costs. DuraRacks designs high-density Drive-In and Mobile Racking systems using specialty steel alloys. These materials maintain their impact resistance at temperatures as low as -30°C, preventing the low-temperature steel embrittlement common in standard steel racking.
Modern fulfillment operations require durable, high-bay storage configurations integrated with automated conveying equipment. We manufacture high-bay Selective Pallet Racks and Carton Flow systems that feature tight structural tolerances, enabling seamless integration with automated guided vehicles (AGVs) and stacker cranes.
Storing timber, heavy steel pipes, and construction materials outdoors requires robust resistance to wind, rain, and snow loads. Our structural Cantilever Racking and Galvanized Pallet Racks are designed to withstand local wind pressures (up to 150 km/h) and feature sloped drainage channels to prevent interior water collection.
The industrial warehousing sector is undergoing a technology-driven transition. Racking systems are evolving from passive iron frames into dynamic elements integrated with building structures and automation platforms. Below are the key trends our R&D division is tracking and implementing for our global clientele:
Faced with rising land prices and construction costs, developers are turning to rack-clad buildings. In this layout, the racking system serves as the building's primary structural frame, supporting the roof and side cladding directly. This setup eliminates the need for separate structural steel pillars, maximizing volumetric storage density. DuraRacks engineers these systems using high-strength structural profiles, calculating both dead loads and wind-and-snow combinations on the exterior skin.
Manual forklift operations are increasingly being replaced by automated stacker cranes and shuttle systems. This shift reduces the structural deflection tolerances allowed in racking systems. While standard forklift racking allows deflections of L/200, automated systems demand limits of L/300 or L/400 to prevent automated shuttle jams. DuraRacks utilizes CNC automated punching machines and high-precision welding fixtures to achieve the tight manufacturing tolerances required for modern automated warehouses.
Leading global enterprises are evaluating the carbon footprint of their supply chains. Racking systems, which consume hundreds of tons of structural steel per project, represent a significant source of embodied carbon. DuraRacks is leading the way by sourcing steel from mills that utilize Electric Arc Furnace (EAF) recycling loops and optimization software. These methods minimize trim waste, reducing the environmental impact of our manufacturing process.
Clear, direct answers regarding certifications, customizations, local freight, and installation logistics.
Combining heavy-duty storage capability with high-traffic retail configurations to maximize floor efficiency.
DuraRacks
