Top China Heavy Pallet Racking Factory & Supplier

For high-bay storage racks bearing 3,000 to 5,000 kg per beam level with frame heights exceeding 8 meters, the concrete slab must function as an engineered structural foundation. The minimum recommended specification is a reinforced slab thickness of 200mm to 250mm with a compressive strength of at least fc ≥ 25–30 MPa (C25/30 or 4,000 PSI).

Floor flatness must meet DIN 18202 Table 3 Group 3 or ASTM E1155 F-min 50 to 75 for standard counterbalanced forklifts, and even tighter tolerances for VNA (Very Narrow Aisle) turrets. Upright footings exert high point loads (often 80 to 180 kN per column footplate). HEDA Shelves engineers custom baseplate dimensions (e.g., 180x150x8mm or 220x200x10mm) to distribute loads safely and prevent concrete punch-shear failure.

Under EN 15512 and RMI standards, storage rack corner uprights adjacent to aisle intersections must be shielded to withstand an accidental collision force of at least 400 Nm in any direction at a height not less than 400mm.

We address this with a three-layer defense system: First, independent wrap-around structural steel column protectors anchored directly into the slab floor rather than into the upright itself. Second, heavy-duty floor-mounted tubular end-of-row aisle guards that protect vulnerable turnaround corners. Third, dual high-visibility safety locking pins engineered with a minimum shear failure capacity of 10 kN to prevent accidental beam dislodgement caused by upward forklift mast snagging.

Seismic design requires dynamic finite element modeling based on localized spectral ground acceleration parameters (e.g., Ss and S1 under IBC/ASCE 7, or Zone 3/4 under South American building codes).

Our seismic engineering upgrades include: (1) Increasing upright gauge thicknesses from 2.0mm to 2.5mm or 3.0mm; (2) Upgrading standard steel grades to certified Q355B to ensure plastic hinge ductility without brittle fracture; (3) Incorporating heavy welded structural spine bracing and top-tie portals across double-entry runs; and (4) Installing enlarged seismic baseplates pre-drilled for multiple high-embedment anchor studs (such as M16x140mm chemical or mechanical expansion anchors).

At sub-zero temperatures, structural carbon steel is susceptible to low-temperature embrittlement, where impact toughness drops and ductile metals become vulnerable to brittle cracking.

For industrial freezer operations, HEDA Shelves utilizes cold-rolled steel tested for Charpy V-notch impact energy at -20°C and -40°C. In high-condensation freezer-thaw cycles, we offer continuous Hot-Dip Galvanization (HDG) per ISO 1461, producing an 85-micron zinc-iron metallurgical bond that prevents internal tube oxidation and rust creeping over decades of refrigerated warehouse operation.

Thanks to our 30,000 metric ton monthly production capacity, a standard project order of 5 to 15 full containers (40ft HQ) completes production in 14 to 21 business days following approval of structural fabrication drawings.

To protect the powder-coated finish and maximize container space, beams are nested back-to-back in bundle packs strapped with protective plastic corner guards. Uprights are bundled on structural steel skids with custom wooden dunnage blocks that allow fast unloading via forklift extensions at the destination container yard, consistently achieving 95-98% container space utilization.