Heavy Duty
Export Solutions Portfolio
High-Throughput Pallet Racking & Warehouse Systems
Factory-direct industrial storage components roll-formed, precision-punched, and tested to meet international seismic and dynamic load tolerances.
Heavy Duty
Logistics Bins
AS/RS Automated
Stackable
Galvanized
Rack-Clad
Mobile Cold Store
FIFO Flow
Engineering Whitepaper Dossier
Anatomy, Structural Mechanics & Metallurgy of Single Deep Racks
Selective (single deep) pallet racking is the foundation of high-velocity logistics. As a custom OEM exporter, we engineer every upright frame and load beam against precise static and dynamic load criteria.
Omega-Profile Upright Geometry & Stress Dissipation
The structural core of our single deep upright frame is roll-formed from certified high-tensile hot-rolled steel strip (Q235B and Q355B structural grades). Through an 18-stage cold-forming continuous mill, the steel is shaped into an optimized 11-fold Omega cross-section profile. This closed-lip geometry creates multi-planar load dispersion, elevating torsional stiffness by up to 28% compared to standard open-channel uprights.
Automated CNC punch banks punch pitch configurations at precisely 50mm, 75mm, or teardrop 2-inch increments. Upright columns feature cold-riveted diagonal and horizontal bracing triangulated to suppress both sway-mode buckling and frame torsion during high-elevation forklift staging.
- Yield Strength Threshold: Certified yield stress ≥ 355 N/mm² for heavy-capacity frame tiers exceeding 24,000 kg total frame load.
- Continuous Laser Verification: Punching pitch tolerances calibrated within ±0.15mm per 1,000mm run to guarantee perfect beam lock-in.
Box-Step Beams & 3/4-Claw Structural Connection
Load beams utilize a twin-C interlocking box design or stepped cross-section continuously welded via closed-loop robotic CO2 shielded gas welding lines. The dual-thickness top flange directly addresses localized web compression and eccentric point-loading exerted by standard timber pallets, wire mesh decking, or steel skids.
Connector ends utilize heavy-gauge high-ductility pressed steel end-plates engineered with 3-claw, 4-claw, or 5-claw interlocking hook designs. Once seated into the upright slots, safety locking pins with mechanical spring locks lock the connection, completely nullifying inadvertent uplift dislodgement under high-speed forklift pallet extraction.
- Deflection Integrity Standard: Rated maximum vertical deflection restricted to ≤ L/200 under 100% rated uniformly distributed load (UDL).
- Safety Multiplier: Built with an engineering safety factor of 1.5 to 1.65 compliant with RMI MH16.1 and EN 15512:2020 limit state codes.
Engineering Specifications
Custom OEM Technical Parameters & Testing Standards
Direct comparison of structural grades, profiles, deflection thresholds, and surface finishes engineered for global tender bid documentation and local permit compliance.
| Structural Subsystem | Material Specification | Dimension / Section Modulus | Load Rating (UDL) | Compliance Standard |
|---|---|---|---|---|
| Upright Columns (Single Deep) | Q235B / Q355B Cold-Rolled Steel | 80×60, 90×70, 100×70, 120×95 mm (Thk: 1.5–3.0 mm) | Up to 28,000 kg / bay tier | EN 15512:2020 / RMI MH16.1 |
| Interlocking Box Beams | High-Tensile Strip Steel (SPHC/Q235) | 80×50 to 160×50 mm (Thk: 1.5–2.0 mm) | 800 kg to 5,000 kg / pair | Deflection Limit ≤ L/200 |
| Step Beams (for Wire Decking) | Dual-layer cold-drawn steel | 50×50 step with 20mm step drop | 500 kg to 3,000 kg / pair | ANSI MH26.2 Decking Safe |
| Surface: Nano-Powder Coating | Thermosetting Epoxy-Polyester | Film Thickness: 65 – 90 μm (cross-hatch ≤ 1 grade) | 500-Hour ASTM B117 Salt Spray | RoHS & ISO 12944-C2 |
| Surface: Hot-Dip Galvanizing | Molten Zinc Bath (450°C dipping) | Coating Thickness: ≥ 65 μm (450 g/m²) | 1,200-Hour ASTM B117 Salt Spray | EN ISO 1461 / Cold Stores |
| Baseplates & Anchoring | Structural Steel Plate Q355B | 150×120 to 220×200 mm (Thk: 4.0–12.0 mm) | Hilti/Fischer M12–M16 Wedge Anchors | Eurocode 8 Seismic Category |
Verified Manufacturing Authority
Guangzhou HEDA Shelves: 25 Years of Factory Direct OEM Leadership
Established in 2001, Guangzhou Heda Shelves Co., Ltd. is one of Southern China's premier heavy-duty warehouse racking manufacturers. We operate complete roll-forming, punching, welding, and automated surface treatment under one roof.
2001
Year Established
30,000m²
Guangzhou Production Plant
30,000t
Monthly Steel Output
120+
Global Export Markets
CE & ISO 9001 Certified
Officially certified with CE Certification No. 2435-CPR-8605159 and ISO 9001:2015 Certification No. 18624Q00169R0M. RoHS-compliant coatings protect indoor distribution centers.
Free 2D CAD & 3D Modeling
Our 300+ engineering and technical team produces structural layout configurations, warehouse volumetric simulation, and seismic calculation reports within 24 to 48 hours of brief submission.
Full OEM / ODM Customization
Private labeling, proprietary connector stamping, custom RAL epoxy color codes, and unique structural dimension profiles tailored to overseas rack distributors and EPC contractors.
Strategic Port Logistics
Located in Guangzhou with immediate access to South China international maritime hubs. Optimized container nest-packing blueprints maximize cube volume and eliminate in-transit transit friction.
Strategic Forecasting
Future Procurement & Technological Trends in Pallet Racking
The selective pallet rack market is shifting from static steel frames toward modular, robotic-ready, and decarbonized warehousing ecosystems. Discover key industry shifts driving global procurement.
1. AMR & AGV Floor Interface Compatibility
Traditional reach-truck operations are being rapidly supplemented or replaced by autonomous mobile robots (AMRs) and automated counterbalanced forklifts. Modern selective rack procurement now requires recessed baseplate anchor bolts, optical reflective target channels integrated into lower beam flanges, and laser-guided bottom run clearances to eliminate navigation interference.
2. Total Cost of Logistics & Modular Knocked-Down (KD) Design
Skyrocketing ocean freight rates have made shipping cubic efficiency a critical purchasing metric. Modern single deep rack exporters have migrated from pre-welded end-frames to high-tolerance bolt-assembled knocked-down (KD) configurations. Bolted upright frames reduce ocean container volume by 45%, cutting freight cost per pallet location significantly.
3. Decarbonized Steel & Eco-Responsible Powder Nanocoatings
Global multi-national 3PL operators demand verified carbon footprint accounting across their material handling equipment. Single deep racking production increasingly relies on electric arc furnace (EAF) recycled scrap steel coils combined with volatile organic compound (VOC)-free thermoset polyester nano-powder coatings cured at reduced thermal profiles to minimize embedded carbon.
4. Advanced Finite Element Analysis (FEA) Simulation
Rather than relying solely on empirical physical prototype crushing tests, modern engineering teams validate rack designs using non-linear finite element structural simulation software. This enables custom profile thickness down-gauging without sacrificing moment resistance, optimizing overall steel weight while ensuring absolute compliance with seismic codes.
Procurement Knowledge Base
Single Deep Pallet Racking Engineering & Procurement FAQ
Detailed answers to critical structural, logistical, and customization questions asked by international EPC contractors and supply chain directors.
What are the key technical differences between Single Deep (Selective) and Double Deep pallet racking?
Single Deep (Selective) Pallet Racking provides 100% immediate accessibility to every single stored pallet position without requiring the relocation of adjacent stock. It operates with standard counterbalanced forklifts, reach trucks, or narrow-aisle VNA equipment, supporting high inventory SKU velocity and FIFO rotation. In contrast, Double Deep racking places pallet pairs two-deep in each bay, increasing physical warehouse storage density by roughly 25%–30%, but requiring specialized pantograph reach trucks and enforcing a Last-In, First-Out (LIFO) inventory restriction per individual slot.
How does HEDA calculate allowable beam deflection, and what standard governs this?
All HEDA load beams are engineered to satisfy the strict deflection limit threshold of δ ≤ L/200 under 100% rated uniformly distributed load (UDL), in accordance with ANSI/RMI MH16.1 (Specification for the Design, Testing and Utilization of Industrial Steel Storage Racks) and European Standard EN 15512:2020. For instance, on a standard 2,700 mm clear entry beam, the maximum downward vertical deflection under full design capacity will not exceed 13.5 mm. When unloaded, the structural recovery must return to within 0.05% of datum zero.
Can your engineering team certify pallet racking layouts for high seismic zones (e.g., UBC Zone 4, Eurocode 8)?
Yes. We routinely engineer and manufacture racking systems for seismic territories across Japan, the Philippines, Indonesia, New Zealand, and the Western United States. Our structural calculations integrate local spectral acceleration parameters (Ss, S1), seismic design categories, soil site classifications, and importance factors. Structural adaptations include heavy-gauge enlarged baseplates (up to 12mm thickness), twin-anchor hole configurations, cold-formed heavier upright gauges, and specialized X-bracing spine assemblies to absorb lateral cyclic shear stresses.
What surface finish options are available for cold storage facilities and high-humidity environments?
For standard ambient distribution warehouses, components receive a 9-stage pre-treatment (pickling, phosphating, deionized water rinsing) followed by automated electrostatic epoxy-polyester powder coating (65–90 μm) cured at 180°C–200°C. For sub-zero blast freezers, cold rooms (-30°C), and coastal facilities exposed to marine salt spray, we provide hot-dip galvanization compliant with EN ISO 1461. Uprights and beams are immersed in a molten zinc bath at 450°C, producing a metallurgical zinc-iron alloy coating (≥ 65 μm) with superior abrasion resistance against pallet drag damage.
What minimum dimensional parameters are required to receive a complete 2D/3D layout proposal?
To generate an optimized CAD drawing and structural load calculation report, please provide:
1. Warehouse architectural drawing indicating building columns, fire exits, docks, and overhead clearance (clear height below trusses/sprinklers).
2. Pallet dimensions including width, depth, and overall height (including the pallet base itself).
3. Maximum gross load weight per pallet (nominal and design ultimate).
4. Material handling equipment (forklift) model, mast collapsed height, maximum lift height, and minimum right-angle stacking aisle width (AST).
5. Environmental requirements (operating temperature, humidity, seismic zone coordinates).
How does knocked-down (KD) packaging impact export container stuffing and ocean freight costs?
As a dedicated exporter, we ship single deep pallet rack upright frames in knocked-down (unbolted) condition alongside bundled load beams. Upright posts are tightly nested using heavy timber dunnage and high-tensile steel straps with corner edge protectors. This increases shipping density significantly: a single 40ft High Cube container can hold up to 24–26 metric tons of knocked-down racking components, whereas pre-welded frames consume excessive volumetric cubic space, transporting significant amounts of empty air. Installation crews assemble frames on-site using supplied grade 8.8 galvanized structural bolts and self-locking flange nuts.
Plan Your Warehouse Storage Layout with HEDA Engineers
Whether you are outfitting a 2,000 m² local logistics buffer or an 80,000 m² regional distribution center, our factory-direct engineering team delivers fully certified, customized pallet racking configurations built to your precise load and operational requirements.
24-Hour Layout Turnaround
CE & ISO 9001 Certified Factory
10,000+ Completed Installations Worldwide