Nanjing Dulis Warehouse Equipment Co., Ltd. (DuraRacks) manufactures high-capacity industrial pallet racking, drive-in systems, and automated storage solutions. Delivering structural stability, ISO9001 quality compliance, and FEM alignment for global 3PL hubs.
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. Over the years, we have built a solid foundation of engineering capabilities and manufacturing efficiency, dedicated to resolving complex warehouse logistics bottlenecks. Boasting over 12 years of core industry experience and 9 years of direct export experience, our facility spans a modern industrial building area of 38,000 square meters, optimized specifically for processing heavy-duty structural steel and multi-gauge profiles.
We specialize in high-capacity pallet racking, drive-in systems, and automated storage solutions. Our scale of operations is backed by an annual export revenue of $32 million USD. This financial stability empowers our continuous capital investment in state-of-the-art automated manufacturing facilities, CNC control systems, and structural testing hardware. As a primary manufacturer, we handle every stage of the lifecycle—from raw material inspection, complex structural analysis, customized roll forming, to surface preparation and precision powder coating.
DuraRacks operates with a customer-centric focus. By eliminating intermediate trading channels, we guarantee direct-factory pricing, transparent material origins, and total oversight of mechanical tolerances. Our operations prioritize structural durability, recognizing that modern distribution centers function in environments requiring optimal material resilience and compliance with strict safety frameworks.
Every industrial rack component we output follows a strict, sequential manufacturing protocol. This guarantees that our structural load calculations match real-world operational performance.
We source premium, certified steel coils (Q235B and Q355B structural grades). Each batch undergoes strict visual and mechanical checks to ensure compliance with tensile and yield requirements.
High-precision heavy shears and automatic saws cut raw steel sheets into dimensional strip blanks. Flat structural edges are prepared for subsequent forming without stress fractures.
The strip steel passes through multi-station roll formers to form continuous beam and upright channel shapes, maintaining uniform structural profile thickness throughout the bend radii.
Using CNC hydraulic punch presses, we perforate upright profiles with standard pitch configurations, maintaining mechanical hole center distance accuracy within 0.1mm.
Our heavy-duty bending units fold bracket connections and baseplates. Uniform bend radius control prevents micro-fracturing along tension-prone bend lines.
Automated welding robots construct load-bearing beam connector clips and base assemblies, guaranteeing uniform structural penetration with minimal heat-affected zones.
Welding slag and surface rust are mechanically polished and shot-blasted to prepare the steel profile for optimal powder adhesion.
An automatic powder-coating line deposits an even thermoset epoxy finish, cured at high temperatures to provide scratch resistance, chemical stability, and corrosion protection.
Finished assemblies are sorted, bundled, and wrapped inside our shipping facility, ready to be packed into containers for damage-free transit to international logistics projects.
Our Nanjing facility is equipped with automated machinery designed to maintain uniform structural tolerances across large-scale manufacturing runs.
Equipped with CNC controllers, our automated cutting machines handle high-tensile structural plates, maintaining precise edge geometry for weld joint preparation.
Featuring multi-stage rolling stations, this system forms structural uprights and step beams with precise cross-sectional dimensions, preventing stress concentration.
Our CNC punching units utilize high-durability tooling dies to stamp standard pitch locking holes along vertical upright profiles, maintaining spacing consistency.
Our fiber laser cutter processes custom structural baseplates, seismic ties, and complex components, ensuring clean cut edges that require no post-processing.
This conveyor-driven system features multi-stage chemical pretreatment, electrostatic powder spray booths, and a curing oven to apply a durable, uniform layer.
Our synchronized hydraulic press brakes process high-gauge steel plate folds, matching specifications for structural base plates and heavy connectors.
DuraRacks operates a dedicated engineering department, focusing on structural efficiency, structural simulation, and customized design to meet complex warehouse storage requirements.
Our 68 R&D engineers use Finite Element Analysis (FEA) software to simulate stress distribution under load patterns, seismic events, and dynamic fork-truck impacts. This optimizes rack design parameters before physical fabrication.
We build detailed 3D CAD models and Building Information Modeling (BIM) structural layouts. This ensures racking components fit with warehouse layouts, building pillars, fire sprinkler positions, and slab designs.
We design custom upright frame profiles, beam sections, load configurations, and connection plates. Our tooling workshop creates custom dies to meet unique loading requirements.
We engineer racking configurations to meet regional seismic safety standards (including AS4084, RMI specifications, and FEM codes). Uprights, baseplates, and bracing systems are configured for high-stress zones.
Our engineering team focuses on structural innovation. Last year alone, DuraRacks introduced 85 new product innovations and patented racking components, including structural locking pins, high-rigidity beam profiles, and boltless connection plates. Our engineering focuses on structural efficiency, seeking to reduce assembly times and lower overall logistics material costs.
Quality and structural integrity form the bedrock of our manufacturing philosophy. We implement rigorous testing protocols to verify structural performance and material quality.
We use non-destructive ultrasonic testing to examine high-stress weld joints. This checks for internal air pockets, micro-fissures, and weld root penetration, ensuring consistent load transfer through structural connectors.
Using calibrated hydraulic tensile testing units, we verify yield points, ultimate tensile strength, and elongation profiles on samples from every raw steel coil batch to ensure raw material consistency.
Our testing facility runs load capacity assessments on assembled bays, verifying structural deformation, residual deflection limits, and safety factors under design capacity configurations.
We place powder-coated steel panels in environmental salt spray chambers to test corrosion resistance under harsh environments, confirming performance in damp or cold-storage environments.
Our quality control process is managed by a dedicated team of 45 certified QA personnel. They implement rigorous quality control processes aligned with ISO9001 quality management, CE product safety compliance, and FEM 10.2.02 European design codes. From receipt of raw steel materials to the loading of outbound shipping containers, every step is logged and traceable.
DuraRacks operates as an integrated direct-export manufacturer, utilizing a robust raw material supply chain and logistics network to coordinate global container shipments.
Our logistics operations are supported by a robust network of over 1,200 qualified supply chain partners, including regional raw steel suppliers, chemical plants, tooling fabricators, and maritime transport brokers.
We manage container stuffing, export customs clearance, and document processing at the Port of Shanghai and Port of Nanjing, minimizing delays and maintaining project timelines.
Our primary overseas markets encompass North America, Western Europe, and Australia. We adapt our configurations to meet local structural certification codes in each region.
High-density dynamic racking configurations designed for continuous turnover operations and variable load patterns.
Multi-tier pick module structures and integrated automated storage platform connections designed to maximize overhead space.
Specialized paint formulations and structural steel selections that maintain integrity in sub-zero environments.
Racking systems built to store heavy dies, automotive tooling components, and oversized industrial steel materials.
Get in touch with DuraRacks engineering. We provide structural layouts, load capacity calculations, and custom quotes based on your warehouse specifications.
DuraRacks