Boltless Series
Heavy Duty Boltless Steel Warehouse Storage Shelves
- Capacity: 300kg – 1,000kg per tier
- Upright pitch: 50mm adjustable
- Assembly: Interlocking rivet/lug connection
Export Product Portfolio
High-Density Industrial Storage & Longspan Systems
Direct from Guangzhou Heda Shelves Co., Ltd.—our engineered product line combines boltless rapid-assembly architecture with heavy-load yield strength, certified for warehouses, fulfilment centers, and cold chains worldwide.
Structural Systems
Steel Structure Mezzanine Floor Rack Platform
- Floor Loading: 300kg – 1,200kg/m²
- Decking: Galvanized steel grating / B-deck
- Clear Height: 2.2m – 4.5m per tier
Dynamic Storage
High Density Push Back Warehouse Pallet Racks
- Configuration: 2 to 6 pallets deep (LIFO)
- Cart System: Telescopic nested low-friction
- Incline Angle: 2.5° – 3.5° gravitational slip
FIFO Flow
Aluminum FIFO Gravity Flow Lane Rail System
- Roller Material: Extruded AL + nylon wheels
- Operation: Strict FIFO carton live storage
- Compatibility: Lean manufacturing cell racks
Heavy Pallet Flow
5-Layer Heavy Duty Gravity Pallet Flow Storage Rack
- Braking: Centrifugal speed-limiting rollers
- Lane Depth: Up to 20 pallets continuous
- Application: High-turnover cold storage / FMCG
Multi-Tier Pick
Multi-Tier Storage Mezzanine Platform Rack
- Levels: 2-4 tiers vertical space expansion
- Stairways & Chutes: Integrated CAD routing
- Steel Standard: Q235B / Q355B heavy section
Heavy Duty Beam
Heavy Duty Steel Pallet Storage Shelves (500kg-3000kg)
- Beam Profile: Double-C box closed section
- Finish: Thermoset polyester electrostatic powder
- Connector: 3/4-prong cold-stamped claws
Wide Span Hybrid
Adjustable Commercial Wide-Span Longspan Racking
- Span Widths: 1,200mm up to 2,700mm
- Decking Options: Steel panel, wire mesh, chipboard
- Safety Locks: Spring auto-locking pins
Industry Whitepaper • Section 01
Executive Overview: Structural Engineering of Modern Longspan Racking
In modern supply chain management and intralogistics distribution design, Longspan Racking (also classified as Wide-Span Shelving) bridges the structural gap between light-duty manual shelving (<200kg per level) and heavy-duty selective pallet racking (>1,500kg per level). As an internationally recognized OEM/ODM longspan racking manufacturer and exporter, Guangzhou Heda Shelves Co., Ltd. engineers cold-formed structural steel storage units that optimize internal warehouse cubing, elevate pick-face ergonomics, and satisfy international engineering codes including FEM 10.2.02 (European Federation of Materials Handling), EN 15512:2020, and the American ANSI MH16.1 (RMI) specification.
Unlike lightweight commercial shelving that relies on stamped angle posts and single-point sheet bolts, heavy-duty longspan racking leverages cold roll-formed omega (C-channel) upright columns interlocking with stepped or boxed horizontal beams. This boltless hook-and-slot design ensures high torsional rigidity, lateral moment-resisting stiffness, and flexible reconfiguration on 50mm or 75mm elevation increments. For mid-tier and high-density fulfillment centers managing automotive aftermarket parts, apparel e-commerce, pharmaceutical reserves, and fast-moving packaged consumables, precision-manufactured wide-span shelving eliminates the dead space overhead without necessitating expensive specialized reach trucks.
25+
Years Engineering Expertise
30,000T
Monthly Manufacturing Tonnage
120+
Export Destination Markets
30,000m²
Advanced Factory Footprint
Structural Metallurgy: Q235B vs. Q355B Mechanical Integrity
The backbone of any load-bearing longspan structure lies in its cold-formed tensile steel specifications. HEDA Shelves utilizes premium high-ductility, hot-rolled steel strip, slit and cold-rolled into specialized upright profiles. Our production lines deploy automated roll-forming machines with continuous punch-tooling dies to produce uniform column sections without localized micro-cracking at the bend radii.
| Steel Grade Standard | Yield Strength ($R_e$, MPa) | Tensile Strength ($R_m$, MPa) | Elongation ($A$, %) | Recommended Racking Application |
|---|---|---|---|---|
| Q235B (GB/T 700) / SS400 | ≥ 235 | 370 – 500 | ≥ 26% | Standard medium-duty longspan beams, shelves, and base plates (ambient dry stores). |
| Q355B (GB/T 1591) / S355JR | ≥ 355 | 470 – 630 | ≥ 22% | High-bay multi-tier mezzanine columns, seismic zone bracings, and 1,000kg/tier spans. |
| Pre-Galvanized DX51D+Z | ≥ 260 | 270 – 500 | ≥ 22% | Perforated steel decking panels for high-humidity coastal and pharmaceutical cleanrooms. |
Market Intelligence • Section 02
Future Procurement Trends in Industrial Storage Systems (2025–2035)
Industrial procurement directors, supply chain consultants, and warehouse engineering managers face an evolving distribution landscape driven by localized omni-channel e-commerce, regional reshoring of manufacturing, and the steep escalation of industrial warehousing land costs. Sourcing strategies for longspan racking systems are shifting rapidly from catalog-based commoditized purchases to digitally calculated, tailor-engineered architectural assets.
1. Modular Mezzanine Integration
Procurement trends demonstrate a 42% rise in rack-supported mezzanine floors over standalone single-floor racking. Facility managers leverage multi-tier longspan frameworks to triple picking surface areas within existing building envelopes, sidestepping capital outlay for greenfield civil warehouse expansion.
2. Hybrid AMR & AGV Clearances
With Autonomous Mobile Robots (AMRs) handling floor transit, modern longspan tiers are engineered with elevated bottom-level beam clearances (600mm to 900mm) and wider span configurations to enable automated under-chassis docking without sacrificing upper-tier manual hand-picking faces.
3. Container-Cubed Modular Exporting
Global ocean freight volatility mandates optimized packaging engineering. B2B buyers now select suppliers who design knocked-down upright frame kits, nested shelf panels, and bundled box beams engineered mathematically to achieve 98% volumetric fill rates in standard 40-foot High Cube (40HC) shipping containers.
4. Climate-Adaptive Surface Protection
Expanding supply chains across high-humidity coastal ports (e.g., Chattogram, Nhava Sheva, Colombo, Karachi) demand enhanced chemical pretreatment. Traditional solvent spray paint is obsolete; procurement requires automated continuous 9-stage pickling, zinc phosphating, and nano-ceramic bonding prior to electro-powder coating.
Engineering Mechanics • Section 03
Technological & Material Evolution of Longspan Structural Systems
Traditional industrial shelving suffered from localized post-buckling under eccentric live loading and progressive beam connector failure caused by dynamic forklift or order-picker vibrations. At HEDA Shelves, our R&D engineering center utilizes Finite Element Analysis (FEA) to simulate complex multi-axial bending moments, combined axial compression, and thermal-stress deformations under cold-storage conditions down to -30°C.
1. Advanced Cold-Roll Forming Geometry
Rather than simple L-angles or symmetrical C-sections, HEDA engineers deploy a multi-ribbed upright cross-section featuring 8 to 12 distinct longitudinal stiffening return bends. These cold-formed internal flanges dramatically increase the cross-sectional moment of inertia ($I_x$ and $I_y$) and raise the critical buckling stress, preventing torsional flexural buckling without thickening the base coil gauge unnecessarily.
2. Hook-In Mechanical Interlock & Safety Connectors
The beam-to-column connector is precision laser-cut or die-stamped with a 3-prong or 4-prong tapered claw geometry. As vertical weight is applied across the shelf, the tapered connector wedging action draws the beam closer into the upright column face. This self-tightening structural friction joint dramatically dampens longitudinal sway. Each connector is fitted with a spring-steel automatic safety lock pin capable of resisting vertical dislodgement forces exceeding 5,000 N, strictly complying with EN 15512 safety regulations.
3. 10-Stage Precision Manufacturing Workflow
Quality control at HEDA Shelves is managed end-to-end within our 30,000 m² factory complex in Guangzhou, China. Every export order flows through a monitored 10-stage quality-assured production pipeline:
Stage 01
Raw Coil Spectrometry
Stage 02
CNC Strip Slitting
Stage 03
Continuous CNC Punching
Stage 04
Precision Cold Forming
Stage 05
Multi-Roll Sectioning
Stage 06
Automated Deburring
Stage 07
Robotic CO2 Welding
Stage 08
Acid Pickling & Phosphating
Stage 09
Powder Coating (60-80μm)
Stage 10
Bundle Packing & Ocean Load
Manufacturing Authority • Section 04
Guangzhou Heda Shelves Co., Ltd.: Global OEM/ODM Infrastructure
Founded in 2001, Guangzhou Heda Shelves Co., Ltd. has established itself as an authoritative global manufacturer in heavy-duty racking and engineered industrial mezzanine systems. Operating with a 30,000 square meter standardized production base, an engineering roster of over 300 experienced technicians, and monthly export volume reaching 30,000 metric tons, we provide end-to-end bespoke OEM/ODM manufacturing for multinational distributors, systems integrators, and industrial procurement agents across 120+ countries.
Verifiable International Accreditations
Our structural racking systems carry verified CE Certification (No. 2435-CPR-8605159), strict ISO 9001:2015 Quality Management System Certification (No. 18624Q00169R0M) valid through 2027, and full RoHS Environmental Compliance. Audit certificates are fully trackable and available for government and private enterprise tenders.
Free Engineering CAD Layouts & 3D Modeling
Within 24 hours of receiving warehouse architectural drawings (AutoCAD DWG or PDF), our civil and mechanical racking engineers deliver complete spatial capacity designs, aisle turn radius simulations, dead-weight deflection analyses ($L/200$), and 3D visual renderings without preliminary consultation fees.
Bespoke OEM/ODM Private Labeling
We supply worldwide brand owners with custom-engineered roll-forming dies, proprietary connector punch configurations, laser-engraved corporate branding, tailored RAL electrostatic powder paint finishes (such as standard industrial RAL 5015 Sky Blue and RAL 2004 Pure Orange), and custom export packaging barcoding.
Risk Mitigation • Section 05
Industrial Procurement FAQ: Technical, Engineering & Logistics
To assist procurement directors and structural engineers in de-risking commercial wide-span racking tenders, our engineering team has compiled authoritative answers addressing real-world load calculation, seismic resistance, surface treatments, and containerization.
What is the standard permissible beam deflection ratio for longspan shelves under uniform load?
Under international FEM 10.2.02 and EN 15512 specifications, the maximum allowable vertical elastic deflection under a design uniformly distributed load (UDL) is $\delta \le L / 200$ (where $L$ is the clear span distance between inner faces of the upright columns). For example, on a 2,000mm beam level, maximum mid-span deflection must not exceed 10.0mm at 100% rated capacity. Structural safety factors are engineered with a minimum reserve ratio of 1.5 to 1.65 against permanent plastic yield deformation.
How does HEDA prevent corrosion during ocean shipping and in humid tropical climates?
Every steel component undergoes an automatic 9-stage surface treatment protocol: alkaline chemical degreasing, twin industrial water rinses, hot sulfuric/hydrochloric acid rust pickling, iron/zinc phosphating to create an insoluble crystalline protective micro-layer, and deionized passivation. Components are then sealed via automated thermosetting electrostatic polyester powder coat cured at 180°C–200°C. Coating thickness is maintained at 60μm – 80μm, delivering >500 hours of continuous ASTM B117 salt-spray chamber resistance without coating peeling. Hot-dip galvanization is optionally available for sub-zero freezer installations.
What engineering information is required to generate an accurate layout and structural quotation?
To provide an engineered proposal within 24 hours, our design office requires: (1) Architectural warehouse CAD drawing or marked dimensioned sketch showing internal clear heights, structural column grids, and fire sprinkler clearance lines; (2) Floor slab specifications including concrete compression grade (e.g., C25/30) and slab thickness; (3) Unit cargo parameters including unit dimensions (W × D × H) and maximum weight per carton or storage tote; (4) Required pick levels per bay; and (5) The project city for seismic zone categorization.
How do boltless longspan racking shelves compare with heavy pallet racks and light angle shelving?
Boltless longspan fills the critical commercial tier. Slotted angle shelving is restricted to light manual loads (<150kg/level) and narrow spans (<1,200mm), warping under heavy bulk density. Standard pallet racking excels at multi-ton unitized wooden pallets (>1,500kg/level) handled by lift trucks, but wastes dramatic cubic space when loaded manually with cartons due to massive beam profiles and wide 3.2m operating aisles. Longspan allows wide manual spans (up to 2,700mm) supporting 300kg – 1,000kg per level with narrow pedestrian picking aisles (900mm – 1,200mm), maximizing manual picking productivity by over 40%.
What export packaging standards are used to protect components during cross-border multimodal transit?
To eliminate shipping damage across ocean voyages, HEDA executes a rigorous industrial bundling plan: Upright column frames are bundled with protective multi-layer bubble wrap and heavy corrugated buffer corners; horizontal box and step beams are grouped in structural steel cradles secured by composite non-stretch strapping and timber blocking; shelf panels are strapped onto solid-wood ISPM-15 heat-treated fumigated pallets wrapped in waterproof polyethylene stretch film. Every package is labeled with high-visibility color-coded maritime shipping marks and weight manifests.
Accelerate Your Storage Project with Direct Factory Engineering
Eliminate intermediary distributor margins. Connect directly with Guangzhou Heda Shelves Co., Ltd.'s structural design engineers to receive full CAD project layout drawings, structural finite-element calculations, and competitive OEM/ODM manufacturing estimates within 24 hours.