Modern fulfillment operations require flexible, high-capacity non-palletized storage. Discover the structural calculations, material specifications, and load dynamics engineered into Random Racks systems.
A Medium Duty Longspan Shelving Rack bridges the operational gap between light-duty riveted shelving and heavy-duty selective pallet racking. Designed specifically for hand-loaded merchandise, medium-to-heavy spare parts, archival bins, and bulky e-commerce goods, longspan shelving offers extended clear-entry bay widths without requiring intermediate front uprights.
At Random Racks Storage Equipment Co., Ltd., every longspan racking system is manufactured using cold-rolled high-tensile structural steel (Q235B and Q355B grades). By utilizing cold-formed profile geometries engineered to comply with international standards—such as AS4084-2023 (Australian Standard for Steel Storage Racking), EN 15512, and RMI specifications—our shelving ensures exceptional torsional rigidity and structural safety factors exceeding 1.55.
Our longspan frame assemblies consist of cold-rolled upright profiles featuring a standard 50mm or 75mm pitch adjustment. Beam connectors feature 3-hook or 4-hook heavy-gauge safety claws that engage flush with the upright slots, eliminating beam dislodgement risks during manual order picking.
Select from our engineered longspan racking series optimized for different weight thresholds, picking frequencies, and facility layouts.
200KG - 350KG / Level Ideal for e-commerce order picking, automotive spare parts, and retail stockrooms. Features drop-in steel shelves with tool-free height adjustment on a 50mm pitch.
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Multi-Tier System Utilize vertical warehouse clearance by building 2 to 3 tiers of longspan shelving connected by integrated steel staircases, walkways, and safety handrails.
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FIFO Pick Flow Integrates roller tracks within standard longspan frames. Perfect for fast-moving SKU picking line feed, achieving strict First-In, First-Out (FIFO) stock rotation.
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500KG - 800KG / Level Reinforced structural step-beams combined with cross-support bars engineered for heavy tooling, dies, liquids, and high-density industrial storage loads.
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Get CatalogHow global supply chain dynamics, automation integration, and ESG compliance are transforming industrial shelving selection for 2025 and beyond.
The rapid growth of micro-fulfillment centers and e-commerce logistics centers is driving demand for longspan racks designed to interface with picking AMRs and Automated Guided Vehicles (AGVs). Modern longspan shelving must feature tighter engineering tolerances, flush shelf deck surfaces, and integrated barcode/QR location indexing slots to allow robotic picking arms and vision sensors to access bin locations without obstruction.
Global procurement directives in North America and Western Europe increasingly prioritize environmental compliance across supply chains. Random Racks Storage Equipment Co., Ltd. leads the industry by implementing non-toxic zirconium pre-treatment wash systems combined with thermosetting, solvent-free electrostatic powder coatings. This delivers superior corrosion protection (over 500 hours salt spray resistance) while meeting zero-VOC emission benchmarks.
Global buyers are moving away from uncertified generic shelving to fully documented structures engineered according to regional seismic codes (such as AS4084 in Australasia and FEM 10.2.06 / EN 15512 in Europe). Procurement teams now demand complete finite element analysis (FEA) modeling, physical destruct testing certificates, and verified mill test certificates for cold-rolled steel coils prior to issuing purchase orders.
With warehouse rental costs escalating globally, facility managers require shelving systems that can be rapidly relocated, expanded, or converted into multi-tier mezzanines. Completely boltless teardrop and keyhole connector designs allow 60% faster field assembly compared to traditional bolted angles, dramatically reducing installation labor costs on site.
Founded in 2004, Random Racks Storage Equipment Co., Ltd. has grown into a world-class manufacturer of industrial storage racking and logistics systems. Operating out of our modern production facility in Nanjing, China, we combine automated continuous roll-forming lines, robotic welding stations, and automated powder coating technology to deliver high-precision longspan shelving systems.
Unlike trading entities, we maintain end-to-end quality oversight—from raw material coil selection to automated punching, roll-forming, chemical cleaning, powder curing, and export packaging. Our engineering team designs custom solutions tailored precisely to your floor plan dimensions, building clear heights, floor slab load capacities, and operational workflows.
In-house racking manufacturing leadership since 2004.
Structural integrity verified by third-party testing labs.
Engineering drawings and bill of materials provided at zero cost.
Tailored shelf depths, beam lengths, colors, and branding.
Streamlined logistics packing delivering to 90+ countries.
Understand the technical trade-offs between longspan shelving and alternative storage configurations to determine the optimal system for your operation.
| System Category | Typical Load Capacity | Handling Method | Optimal SKU / Item Profile | Cost Per Storage Level |
|---|---|---|---|---|
| Medium Duty Longspan Rack | 200kg – 800kg / shelf level | 100% Manual Hand Loading / Picking | Medium-sized boxes, loose parts, archives, e-commerce goods | Low – Highly Cost Effective |
| Selective Pallet Racking | 1,000kg – 4,000kg / level | Forklift Truck Operated | Full palletized unit loads, uniform bulk goods | Moderate |
| Upright Mezzanine Longspan | 300kg – 500kg / m² floor space | Multi-tier Manual Access + Freight Lift | High-density small-to-medium parts picking in high-bay spaces | Medium – High Space Utilization |
| Heavy Duty Mold Rack | 800kg – 2,000kg / drawer level | Overhead Crane / Hoist / Forklift | Injection molds, heavy engine blocks, industrial dies | High – Special Purpose |
| Cantilever Rack System | 500kg – 3,000kg / arm | Forklift / Crane / Manual | Long stock: pipes, timber, steel tubes, aluminum extrusions | Moderate |
Need assistance calculating beam deflection or structural bay sizing? Our engineering team will review your item list and compute precise load profiles.
Our standardized export workflow guarantees engineered safety, transparent quality control, and on-time project execution.
Share your floor plan, clear ceiling height, shelf load requirements, and item dimensions.
Our racking engineers produce optimized bay layouts, load calculations, and a complete Bill of Materials (BOM).
Automated roll-forming, robotic welding, and electrostatic powder coating under strict ISO9001 supervision.
Components are bundle-wrapped with corner protectors and steel strapping designed for safe ocean transport.
Complete assembly drawings, video installation guides, and direct technical advisory for your installation team.
Clear answers to technical, procurement, and logistical questions frequently submitted by global buyers and warehouse engineers.
A Medium Duty Longspan Shelving Rack typically supports load capacities ranging between 200kg and 800kg per beam level, using structural upright frames and heavy-gauge step beams similar in geometry to selective pallet racking. Light-duty shelving (under 150kg/level) typically utilizes angle posts and lightweight clip connectors, whereas heavy-duty pallet racking (1,000kg+ per level) is designed specifically for forklift handling. Longspan shelving is engineered for extended bay spans (1,200mm up to 2,700mm) while maintaining 100% hand-loading accessibility.
Steel Shelf Panels: Ideal for industrial environments, offering high durability, easy cleaning, zero moisture absorption, and fire resistance.
Particle Board / Chipboard: Economical solution for general dry storage, retail stockrooms, and archive facilities.
Wire Mesh Decking: Essential when local fire codes require overhead sprinkler penetration through shelving levels, or when storing items that generate dust accumulation.
Yes. Our Medium Duty Longspan Shelving Racks are engineered in compliance with Australian Standard AS4084-2023 (Steel Storage Racking) as well as European FEM 10.2.06 guidelines. We strictly design for structural stability under both dead loads and live hand-loading conditions, maintaining maximum deflection below L/200. Mill test certificates for structural steel (Q235B/Q355B) and third-party load test reports are provided upon request.
To produce an engineered 2D/3D CAD drawing and exact quotation, our team requires: (1) Warehouse building plan showing column grids and door locations, (2) Clear height beneath joists/sprinklers, (3) Dimensions of goods to be stored (Width x Depth x Height), (4) Target weight per shelf level, and (5) Preferred aisle width for manual picking trolleys or order pickers.
Yes. If initial structural engineering accounts for future vertical expansion, our heavy-duty longspan uprights can serve as the vertical structural columns supporting upper-level catwalks, stairs, and flooring panels. We recommend informing our engineers during initial design so frame gauges and baseplate anchoring can be sized to support cumulative multi-tier loads.
Standard order manufacturing lead times typically range from 15 to 25 days following CAD drawing approval. All components are packaged for international ocean freight: upright frames are stacked with protective interlayers, beams are bundled with plastic wrap and heavy steel strapping, and shelf panels are crated on wooden pallets with edge guards to prevent transit damage.
Partner directly with China's trusted racking manufacturer. Contact Random Racks Storage Equipment Co., Ltd. for custom technical layouts, load engineering, and competitive factory pricing.
Connect with our technical team immediately to discuss your project requirements or request our complete product brochure.