High-capacity structural steel racking systems engineered to meet international safety and density compliance metrics.
Established in 2015, Shenzhen Sunli Intelligent Logistics Equipment Co., Ltd. has developed into a premier manufacturer of heavy-duty industrial racking and smart automated warehouse systems. Utilizing our cutting-edge manufacturing facility that spans 38,000 m², we blend 12+ years of domestic technical expertise with 8+ years of global supply chain logistics.
Our export portfolio produces an annual revenue value between $18 million and $25 million, ensuring global availability throughout North America, Western Europe, Southeast Asia, and the Middle East. Through rigorous structural analysis and cold-rolled steel processing, we deliver robust, safe, and dependable drive-in pallet racking systems engineered for high-density operations.
Every storage structure is fabricated utilizing premium raw materials and high-precision machinery, ensuring flawless alignment and load distribution.
To ensure structural consistency, we run specialized profile lines tailored to specific load criteria. High-strength steel profiles undergo dynamic roll-forming to achieve excellent load-bearing rigidity. Standardizing dimensions ensures ease of system modifications or extensions.
An analysis of mechanics, load transfer paths, and warehouse floor optimization for heavy duty pallet systems.
Drive-In pallet racking systems are dynamic structures designed to maximize warehouse space. Unlike standard selective pallet racks, which require open access aisles for forklifts, Drive-In configurations remove these aisles by allowing forklifts to enter the racking lanes directly. This reduces the footprint needed for travel paths and optimizes cubic space utilization.
By utilizing a Last-In, First-Out (LIFO) inventory logic, this system is suited for bulk storage of identical or highly standardized products. Standard implementations can increase storage capacity by up to 75% compared to traditional configurations.
To maintain structural integrity under high loads, Drive-In systems depend on precise alignment and heavy-duty steel profiles:
Precision and load ratings are verified in our quality control lab, utilizing modern metrology tools to inspect physical tolerances, surface adhesion, and material elasticity.
Our QC testing program covers the entire manufacturing process:
| Inspection Phase | Measurement Parameter | Compliance Target | Testing Instrument |
|---|---|---|---|
| Steel Thickness Check | Raw roll steel gauge sizing | ISO 9001 Structural Grade Standard | High-Precision Micrometer |
| Weld Bead Integrity | Fused seam penetration depth | EN 1090-2 Welded Structural Steel | Ultrasonic Crack Flaw Detector |
| Powder Coating Quality | Dry film paint thickness & adhesion | ASTM D3359 Cross-Cut Test (4B-5B rating) | Adhesion Tape & Film Gauge Meter |
| Load Bearing Verification | Deformation limit under load | FEM 10.2.07 & RMI Code compliance | Digital Display Bolt Drawing Instrument |
High-density racking solutions adapt to global challenges: rising land costs, labor shortages, and energy costs in cold storage.
Industrial logistics faces challenges from rising real estate costs and the need for space optimization. Companies in North America, Western Europe, and Asia-Pacific are transitioning from standard selective racking to high-density storage models to optimize costs.
Drive-in pallet racking is a practical option for industries requiring deep lanes to store identical stock keeping units (SKUs). Key applications include:
Safe warehouse engineering requires strict compliance with regional building and seismic design standards.
Industrial racking functions as an engineered structure. Standard designs must adapt to local seismic conditions, building layouts, and safety regulations.
Shenzhen Sunli Intelligent Logistics Equipment Co., Ltd. designs and manufactures storage systems in compliance with international engineering regulations:
Through a network of over 800 supply chain partners, we assist with initial layout development, load capacity calculations, regional shipping, and local assembly.
Upgrading traditional drive-in racking to semi-automated and fully automated logistics systems.
Modern material handling is moving toward robotic systems. While traditional drive-in racking is cost-effective, it requires forklifts to enter the rack structure, which can increase cycle times and the risk of upright damage.
Sunli's design process is engineered to transition manual warehouses into smart hubs:
By installing high-precision steel rails within the drive-in layout, operators can deploy automated radio shuttle carts. The shuttle carries pallets into the rack depths, allowing the forklift driver to work at the face of the rack. This speeds up cycle times, decreases forklift wear, and minimizes structural impacts.
Integrating Laser-Guided AGVs (Automated Guided Vehicles) and Warehouse Management Systems (WMS) creates a fully automated flow. High-precision laser sensors locate pallet lanes, allowing AGVs to retrieve products without human intervention. This setup is suited for 24/7 cold-chain operations and large-scale manufacturing distribution hubs.
Answers to engineering, safety, and system optimization questions about drive-in racking.
Typically, drive-in systems are configured up to 10 meters high and 4 to 10 pallets deep. Standard setups often limit depth to 6–8 pallets per lane to optimize forklift cycle times and minimize potential impacts in deep lanes. Structural calculations, seismic load limits, and forklift reach capacities dictate the final design boundaries.
A Drive-In racking system features one access point for loading and unloading, utilizing Last-In, First-Out (LIFO) inventory logic. In contrast, a Drive-Thru system is open on both ends, allowing access from the front and back. This layout supports First-In, First-Out (FIFO) retrieval, which is ideal for perishable inventory and products with expiration dates.
We use flared ground guide rails to align forklifts entering the lanes, heavy steel upright protectors at the entry points, and high-visibility safety barriers. In addition, rear pallet backstops and safety links help prevent improper pallet positioning and cargo displacement.
Yes, our uprights and support frames are designed to accommodate conversions. By installing specialized support rails, charging docks, and end-stops, you can upgrade a standard drive-in rack to a semi-automated Radio Shuttle system, reducing forklift travel inside the lanes.
We primarily use Q235B and Q345B steel grades. For sub-zero cold storage operations, we offer low-temperature steel options that maintain impact strength and ductile properties down to -30°C. This helps prevent brittleness and crack propagation.
Integrate automated material handling equipment, AGVs, and heavy-duty shelving into your storage facility.
SunliRack