Explore our leading, high-capacity industrial racking and steel shelving options. Engineered for global warehouse configurations, retail stockrooms, distribution hubs, and smart manufacturing facilities.
Founded in 2015, Shenzhen Sunli Intelligent Logistics Equipment Co., Ltd. has established itself as an elite global manufacturer specializing in high-load structural steel racking, mezzanine systems, and high-density warehouse storage frameworks. Operational efficiency is anchored by our world-class 38,000 m² modern manufacturing hub, bringing together advanced metallurgy, automated welding technology, and precision cold-rolled profile lines.
With more than 12 years of core industry design experience and 8 years of international export expertise, Sunli structural engineering solutions actively serve key global markets including North America, Western Europe, Southeast Asia, and the Middle East. Our logistics infrastructure solutions generate an annual export valuation range of $18 million to $25 million USD.
Through robust R&D pipeline activities, our specialist team of 28 structural design engineers constantly designs, tests, and deploys structural enhancements, launching more than 120 new products and optimized design patterns every year. To ensure complete durability in seismic zone installations, our 35 dedicated QC professionals execute rigorous physical and chemical tests, covering raw steel load capacity checks, high-frequency ultrasonic weld joint testing, and anti-corrosion dry-film coating thickness verification.
Our solutions cater directly to 3PL, e-commerce giants, and massive industrial setups. We support tailored options including:
In the modern era of logistics, warehousing is no longer just a static footprint. Global supply chains face critical space constraints, soaring commercial real estate costs, and the urgent need for rapid order fulfillment. To survive, operators require ultra-optimized, high-density, and smart vertical storage frameworks.
Global warehouse real estate has witnessed a sharp cost rise. Logistics operators are shifting from traditional horizontal storage to extensive vertical storage configurations. By deploying multi-tier structures, selective pallet racking systems, and mezzanine platforms, companies can expand their storage space by 100% to 300% without expanding their building footprint. Our heavy-duty systems are designed with high-yield strength structural profiles, ensuring total reliability even under severe weight distributions.
Modern mega-fulfillment centers require tight mechanical tolerances for automated guided vehicles (AGVs), stacker cranes, and automated shuttle systems. A minor deflection in a horizontal beam can cause automated systems to stall, leading to costly downtime. SunLi's precise manufacturing standards ensure that structural uprights and horizontal beams exhibit deflection ratios well within the tightest bounds allowed under FEM and RMI parameters, making our systems ready for modern AS/RS integration.
Cold storage facilities demand unique metallurgical properties. Sub-zero environments cause standard structural steel to become brittle. Our warehouse racking systems utilize high-tensile Q355B steel, coupled with advanced epoxy-powder coatings, which are dynamically formulated to maintain structural integrity and resist surface fracturing down to temperatures of -30°C. This level of specialization has established Sunli as a key supplier for pharmaceutical and food distribution hubs globally.
E-commerce operations manage a massive variety of SKUs, requiring flexible storage configurations. Adjustable light-duty and medium-duty steel shelving units, equipped with easily configurable shelf levels, allow rapid rearrangement as product dimensions change. ESD (electrostatic discharge) protection options prevent electrical charges from building up on storage levels, protecting delicate electronics during sorting and packing operations.
Our 38,000 m² factory integrates automated steel forming lines, high-precision laser cutters, robotic welding units, and advanced powder-coating lines to deliver superior structural consistency.
At Sunli, structural engineering is driven by safety and reliability. Each racking configuration we design undergoes comprehensive stress testing, simulated seismic loads, and structural analysis before production.
We work exclusively with certified Q235B and Q355B high-tensile steel roll coils. Our production processes adhere to rigorous international safety standards:
We utilize Finite Element Analysis (FEA) software during the engineering phase to simulate stress loads and seismic events. This ensures that every racking project we deliver offers reliable structural stability for its environment.
| Parameter | Steel Class Q235B | Steel Class Q355B |
|---|---|---|
| Yield Strength (Mpa) | ≥ 235 | ≥ 355 |
| Tensile Strength (Mpa) | 370 - 500 | 470 - 630 |
| Elongation Limit (%) | ≥ 26 | ≥ 22 |
| Typical Applications | Light & Medium Shelving | Heavy Duty & Seismic Racks |
Our dedicated quality control department operates specialized testing equipment. We monitor and verify mechanical tolerances, paint coating adhesion, and load dynamics across all stages of production.
No single racking system fits every logistics environment. We design and deliver custom industrial storage solutions tailored to specific commercial operations.
Third-party logistics providers require highly modular racking systems. Our selective pallet racking platforms feature adjustable connector configurations. This allows forklift teams to quickly reconfigure storage levels without dismantling main upright frames.
For operations utilizing high-density storage, our Double-Deep Pallet Stacking System increases bay layout density by up to 30% compared to standard configurations, maximizing storage space.
For warehouses with high ceilings, our Multi-Tier Mezzanine Storage Systems create additional floor levels for operations. Engineered to support loads up to 2,000 kg per square meter, these platforms leverage unused vertical space to create new walk-ways, picking lanes, and assembly zones.
Integrated with slide gates and conveyor drop zones, our mezzanines streamline material flow across multi-level facilities.
Static charges can damage electronic components during handling and storage. We construct storage units with built-in ESD protection, using conductive powder coatings and grounding kits.
These specialized racks prevent static build-up, protecting sensitive devices like semiconductors and logic boards during storage.
Standard flat shelves are not suited for storing tires. Our specialized foldable steel tyre racks feature curved frame configurations designed to store tires securely without causing flat spots.
Their stackable and foldable design allows warehouses to consolidate empty racks when not in use, optimizing available space.
As logistics facilities adopt automated technologies, storage racking must evolve to integrate seamlessly with these digital ecosystems. Sunli is committed to developing smart storage solutions that support automated warehousing.
Our research and development roadmap focuses on creating racking structures designed for high-density, automated environments:
Achieving dimensional tolerances within +/- 0.5mm across production lines to support high-speed crane movements and shuttle systems.
Integrating strain-gauge telemetry and sensor modules to monitor real-time load distribution, frame stress, and structural balance, helping prevent overloading issues.
Transitioning to ultra-low VOC, bio-based powder coatings to reduce environmental impact while maintaining high corrosion resistance.
Our upcoming product lines aim to integrate smart monitoring directly into structural uprights, providing warehouse operators with real-time feedback on the health and capacity of their racking systems.
This data-driven approach helps logistics teams manage safety and optimize space allocation across large-scale facilities.
Review answers to common technical, engineering, and purchase questions regarding our heavy-duty warehouse racking and storage systems.
Our engineers calculate structural capacity based on material thickness, profile design, and spacing between beam levels. We use Finite Element Analysis (FEA) to simulate load distributions and specify safety margins that comply with RMI and EN 15512 guidelines. Each system is labeled with its certified maximum capacity, ensuring operators have clear safety limits.
Q355B steel is a high-tensile carbon structural alloy with a yield strength of 355 Mpa, compared to 235 Mpa for standard Q235B. We use Q355B for high-load profiles, seismic configurations, and tall racking structures. For standard shelving and light-duty applications, Q235B provides an efficient and cost-effective solution.
For electronic storage environments, we apply a specialized electrostatic dissipative powder coating. When combined with grounding components, this finish allows static charges to flow safely to the ground rather than accumulating on the racks. This helps protect sensitive electronic components from static damage during handling.
Yes. Our automated storage and retrieval systems (AS/RS) configurations are manufactured to tighter dimensional tolerances. By minimizing structural variance, we ensure that automated shuttles, cranes, and robotic pickers can navigate the racking lanes smoothly without alignment issues.
Our standard treatment is a multi-stage electrostatic thermosetting powder coating, applied to a thickness of 60 to 90 microns. This finish provides excellent resistance to chipping, scratching, and chemical exposure. For outdoor or high-humidity applications, we offer hot-dip galvanized finishes for long-term corrosion protection.
For standard project designs, manufacturing typically takes 20 to 30 days following engineering sign-off and deposit confirmation. Larger custom orders or specialized projects may require 35 to 45 days. Shipping transit times vary based on the destination port, with North American and European routes typically taking 25 to 35 days.
Select from our full catalog of heavy-duty, selective, and specialty industrial racking configurations designed to optimize space and streamline logistics operations.
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