Heavy-Duty Longspan & Industrial Storage Assemblies
Direct from Guangzhou Heda Shelves Co., Ltd. (30,000 m² Manufacturing Facility, 30,000 Tonnes Monthly Capacity). Every bay is engineered with high-yield cold-rolled steel and strict deflection limits conforming to EN 15512 and FEM 10.2.02 standards.
Prefabricated Steel Structure Warehouse Building 1000m2 Industrial Storage Hall
Heavy Duty Steel Stacking Racks Customizable Pallet Stack Racks
Heavy Duty Selective Steel Storage Racks & Warehouse Stacking Bays
Boltless Clip Type Heavy Duty Forklift Compatible Mezzanine Racking
Customized Heavy-Duty Folding Steel Warehouse Shelves & Stack Racks
5-Layer Heavy Duty Gravity-Fed Carton Flow Rack for High-Speed Picking
CE Certified Adjustable Heavy-Duty Cantilever Rack for Pipes & Timber
China Factory Direct Industrial Shelving & Selective Pallet Racking
Guangzhou Heda Shelves: 25 Years of Global Storage Engineering
Founded in 2001, Guangzhou Heda Shelves Co., Ltd. operates as one of China’s premier heavy-duty racking and intelligent warehousing infrastructure manufacturers. Our production plants combine precision automated roll-forming, robotic continuous welding, and high-efficiency pre-treatment systems to ship certified storage frameworks across 120+ sovereign nations.
Fully Certified Compliance
Our longspan structures carry valid CE Certificate No. 2435-CPR-8605159 and ISO 9001:2015 Quality Management certification (No. 18624Q00169R0M). Every batch is metallurgically tested for tensile yield, ductility, and strict compliance with European structural design standard EN 15512.
Complimentary 3D & CAD Design
Supply chain architects do not pay for preliminary engineering. Our 300+ technical engineering team prepares custom DWG/BIM layout schemes, vertical aisle clearances, deflection matrices, and high-resolution 3D walkthrough models within 24 to 48 hours from initial site drawing receipt.
Certified Q235B/Q355B Steel
We source prime cold-rolled coils from Tier-1 state steel mills. Precision continuous multi-stage roll-forming ensures upright posts and step beams exhibit zero micro-fracturing along bend radiuses, guaranteeing structural integrity under full rated live and dead loads.
Global Seaworthy Dispatch
Exporting to over 120 countries requires specialized packaging. Upright frames, box-step beams, and steel decking panels are packaged with protective bubble wraps, anti-friction wood spacers, and heavy-duty steel strapping to prevent marine moisture and transit shock during container shipment.
Structural Mechanics & Load Capacities of Modern Longspan Racking
Longspan shelving bridges the functional engineering gap between manual carton-picking light shelves and heavy pallet rack frameworks. Designed primarily for heavy un-palletized inventory, automotive spares, and e-commerce picking modules, our systems are optimized for maximum volume utilization.
In contemporary industrial facility architecture, Longspan Racking (also classified as wide-span shelving) represents the pivotal workhorse for manually handled, medium-to-heavy stock keeping units (SKUs). Manufactured primarily with upright columns cold-rolled into distinctive open omega or closed box-profile configurations, our systems incorporate multi-point interlocking beam claws that fit securely into CNC-punched teardrop or diamond perforations on a standard 50 mm or 75 mm vertical pitch. This geometric design creates a rigid, sway-resistant modular frame that distributes point loading uniformly into structural concrete slab anchors without requiring permanent floor welding.
The structural beam design of Heda longspan profiles utilizes precision-engineered step beams and Z-beams. This allows drop-in flush fitment of versatile shelf levels: heavy-gauge galvanized steel panel trays, wire mesh grids for enhanced overhead fire sprinkler penetration conforming to NFPA 13 rules, or high-density timber/melamine particleboards. The load capacity per horizontal level ranges from 300 kg to 1,200 kg under uniformly distributed load (UDL) conditions, accommodating diverse warehouse operational densities.
| System Configuration | Typical Beam Length | Shelf Depth Range | UDL Capacity per Level | Decking Material Compatibility | Safety Deflection Ratio |
|---|---|---|---|---|---|
| Light-Duty Longspan | 1200 mm – 1800 mm | 400 mm – 600 mm | 200 – 400 kg | Pre-galvanized Steel Panels / MDF | L / 200 Max Under Static UDL |
| Standard Medium Longspan | 1500 mm – 2300 mm | 600 mm – 800 mm | 400 – 800 kg | Steel Trays / Powder Coated Steel | L / 250 Conforming to EN 15512 |
| Heavy Industrial Longspan | 1800 mm – 2700 mm | 800 mm – 1200 mm | 800 – 1200 kg | Wire Mesh Grid / Reinforced Steel | L / 300 Optimized for Automation |
| Multi-Tier Mezzanine Base | 1800 mm – 2500 mm | 600 mm – 1000 mm | 500 – 1000 kg/level + Floor | Heavy Steel Grating / Steel Deck | Rigid Sway-Braced Construction |
Anti-Corrosion Surface Finishing Technology: Durability in non-climate-controlled storage warehouses hinges upon rigorous pre-treatment. Heda Shelves applies a complete 10-stage automated pre-treatment protocol comprising hot alkali degreasing, ultrasonic water rinsing, acid rust pickling, micro-crystalline zinc phosphating, and deionized passivating rinses. The electrostatically applied thermo-hardened epoxy-polyester powder coating (cured at 180°C–200°C) produces an impact-resistant finish with an average dry film thickness of 60–90 microns, delivering superior resistance against abrasions, industrial humidity, and corrosive chemical vapors.
10-Step Quality-Controlled Manufacturing Protocol
From raw hot-rolled carbon steel coils to final export seaworthy bundling, each phase of production in our Guangzhou factory is subjected to continuous in-line dimensional and metallurgical inspections.
Raw Steel Inbound Testing
Spectrometric chemical analysis and mechanical tensile testing verifying carbon and manganese content matching Q235B and Q355B standards.
Precision CNC Slitting
High-speed coil slitting with automated blade spacing guaranteeing micro-tolerance strip width without burrs or wave edges.
Automated Perforation Punching
Continuous hydraulic stamping of teardrop, butterfly, or diamond pitch holes with zero cumulative pitch drift across 12-meter lengths.
Cold Bending & Roll Forming
Progressive 18-to-24-stand roller dies shaping structural column geometries with internal rib stiffeners to resist torsional buckling.
Beam Step Roll Profiling
Continuous twin-seam roll-forming of high-strength interlocking step and box beam channels engineered for seamless shelf drop-in.
Precision Laser Cutting & Polishing
Robotic fiber-laser notch trimming and automatic mechanical edge deburring preventing micro-burrs and guaranteeing clean assembly joints.
Robotic Connector Welding
Multi-axis automated GMAW/MIG welding fusing heavy 3-claw or 4-claw beam end connectors with continuous deep weld penetration.
Pickling & Phosphating
Multi-tank immersion sequence eliminating scale, grease, and mill oxides while depositing a uniform corrosion-inhibiting phosphate layer.
Electrostatic Powder Coating
Automated Swiss Gema powder spray booths applying lead-free, RoHS-compliant thermoset epoxy powders cured in continuous bake ovens.
QC Metrology & Seaworthy Packing
Coating adhesion cross-hatch testing, optical straightness checks, barcode labeling, and heavy-gauge steel strapped container cradles.
Future Procurement & Technological Trends in Longspan Racking
As global logistics modernizes toward automation, ESG compliance, and flexible vertical fulfillment centers, longspan procurement strategies are transforming rapidly.
1. Transition to High-Yield Thin-Wall Alloys
Driven by rising ocean freight and raw material volatility, procurement leaders are prioritizing high-yield Q355B cold-formed profiles over heavy mild steel. By integrating sophisticated finite element analysis (FEA) and continuous stiffening longitudinal ribs, structural deadweight is reduced by 14% to 18% without sacrificing UDL ratings, yielding significant reductions in freight cost per storage bay.
2. Hybrid AMR & AGV-Enabled Manual Racking
Pure automated warehouses present high CAPEX barriers. The market is witnessing exponential adoption of "Hybrid Longspan Modules" where bottom levels are optimized with open ground clearance for autonomous mobile robots (AMRs) and automated sorting tuggers, while vertical levels (tiers 2 through 5) maintain high-density manual carton picking accessed via rack-supported walkways.
3. Strict Seismic Resilience & Eurocode 8
Global institutional investors and insurance syndicates require longspan racking designs to account for seismic base-shear calculations and ductility factors according to EN 16681 and Eurocode 8. Factory-direct engineering packages now routinely mandate anchored heavy-gauge footplates, back-to-back run spacers, and vertical spine X-bracing to prevent catastrophic progressive collapse under seismic shear.
4. Circular Economy & Low-VOC Green Powder
Corporate ESG mandates in North America and the European Union have transformed powder-coating specifications. Procurement contracts explicitly require TGIC-free polyester finishes with zero volatile organic compound (VOC) emissions, fully compliant with RoHS and REACH standards, backed by third-party environmental product declarations (EPD).
5. Digital Twin & BIM Parametric Modeling
General contractors and 3PL procurement teams increasingly reject static PDF blueprints. Standard RFQs require native Autodesk Revit (.RVT) and IFC BIM parametric families containing embedded load limits, beam elevation steps, and sprinkler clash-detection geometry to integrate smoothly into automated building management systems.
6. Vertical Multi-Tier Modular Expandability
Due to urban industrial real estate scarcity, warehouse tenants demand systems that evolve dynamically. Modern longspan uprights are engineered with splice-joint capacity, permitting standard 2.5-meter ground shelving bays to be vertically extended into 2-tier or 3-tier catwalk mezzanines as business inventory throughput expands over a 5-year operational lifecycle.
Frequently Asked Technical Questions by Global Buyers
Essential engineering and commercial considerations for supply chain directors, warehouse project engineers, and international procurement managers.