Top Trusted Longspan Shelving Factory & Suppliers

While selective pallet racking is engineered strictly for forklift handling of unitized wooden or plastic pallets (typically handling 1,000 kg to over 4,000 kg per level), Longspan Shelving is purpose-built for medium-to-heavy manual loading or carton picking. Longspan utilizes intermediate step beams with dropped-in solid steel panels, wire mesh decks, or timber shelves.

The upright profile for longspan is typically 55 × 47 mm (compared to 80-120 mm on pallet racks), offering an economical footprint while still carrying 300 kg to 1,000 kg per shelf level with zero wasted cubic volume.

Uniformly Distributed Load (UDL) assumes that the weight of the stored cartons or components is spread evenly across the entire surface of the shelf beam pair, rather than concentrated at a single point.

Under international standards (such as EN 15512 and FEM 10.2.02), beam deflection under safe working load must not exceed 1/200th of the clear beam span (Deflection ≤ L/200). For a 2,000 mm beam, the vertical mid-span deflection under maximum rated load must remain under 10 mm. HEDA Shelves engineers utilize FEA stress verification and physical hydraulic jack press testing to ensure every production batch meets or exceeds this criterion.

Yes. Heavy-duty longspan uprights can be extended vertically to support multi-tier rack-supported mezzanine floors. In this design, the lower uprights carry both the shelf storage levels and the overhead catwalk floor joists, staircases, and handrail perimeter systems.

This allows operations to double or triple picking floor space within a single building footprint without erecting costly freestanding structural steel columns. It is widely implemented across e-commerce fulfillment hubs, fashion apparel retail warehouses, and automotive parts depots.

Selection depends on warehouse environment, safety regulations, and inventory characteristics:

Pre-galvanized or Powder-Coated Steel Panels: Best for high cleanliness, durability, liquid chemical resistance, and non-flammability. Easily wiped down and hygienic.

Wire Mesh Decking: Ideal for warehouses equipped with in-rack overhead sprinkler fire suppression systems, as open mesh allows water flow. Also prevents dust accumulation and permits light penetration.

High-Density Plywood or Chipboard: Cost-effective solution for dry, climate-controlled warehousing of standard boxed dry goods and spare parts.

Warehouses across Southeast Asia, the Middle East, and coastal regions face severe humidity and salt-laden air. HEDA Shelves addresses this through an automated pre-treatment immersion wash:

Components undergo acid pickling to strip mill scale, followed by iron-phosphate passivation that seals the steel surface on a molecular level. After drying, components receive an electrostatic powder coating of thermosetting epoxy-polyester resin, cured at 200°C. For extreme cold-storage or outdoor applications, full hot-dip galvanizing (HDG) can be specified.

To design an optimized storage layout, please provide:

1. Architectural warehouse drawings (DWG/CAD file or dimensioned PDF sketch) indicating building length, width, clear ceiling height, column grid coordinates, and door locations.
2. Stored item dimensions (Length × Width × Height) and maximum unit weight per carton or tote.
3. Desired number of shelf tiers per bay and target SKU capacity.
4. Warehouse seismic zone or specific building code requirements.