OEM/ODM Pallet Rack Systems Factory & Supplier

In modern industrial storage, knock-down bolted upright frames have overwhelmingly replaced fully shop-welded frames for international export. Bolted frames consist of separate cold-rolled omega-section columns joined by high-tensile Grade 8.8 bolts through dynamic diagonal and horizontal C-channel bracing. This offers two decisive advantages:

• Container Packing Efficiency: Upright components are flat-packed in high-density bundles, increasing container weight utilization to the 26-ton limit and reducing shipping cost per bay by over 400% compared to shipping rigid welded frames.
• Local Maintenance & Repairability: In the event of forklift damage, individual column sections or lower bracing diagonals can be safely unbolted and replaced without having to scrap the entire frame or perform hazardous hot-work welding inside an operational warehouse.

Under both FEM 10.2.02 and RMI MH16.1 specifications, beam deflection under maximum design Uniformly Distributed Load (UDL) must satisfy the elastic deflection criterion:

δ ≤ L / 200 for conventional selective pallet racking served by manual counterbalance or reach trucks (where L is the clear span distance between upright columns; for example, a 2,700 mm beam has a maximum permissible deflection of 13.5 mm).

However, when racks interface with automated crane guidance (AS/RS) or turret trucks in Very Narrow Aisle (VNA) configurations, the allowable deflection threshold is tightened to δ ≤ L / 300 or L / 400 to prevent sensor misalignment and excessive mast sway during pallet extraction.

Yes. Guangzhou Heda Shelves Co., Ltd. regularly designs and fabricates heavy pallet rack systems engineered for seismic zones throughout the Pacific Ring of Fire, including Chile (NCh 433 / NCh 2369), Peru (Norma E.030), Colombia (NSR-10), and the western United States (IBC / ASCE 7). Our structural engineers incorporate the site-specific Spectral Acceleration coefficients (Ss, S1), seismic importance factors, and soil classification into dynamic finite element calculations.

Structural upgrades for seismic zones include enlarged footplates (minimum 12 mm to 20 mm plate thickness), multi-anchor expansion or epoxy chemical anchoring, upgraded back-to-back cross bracing (K-bracing and X-bracing along spine rows), and heavy-duty 4-prong and 5-prong beam connector claws with oversized locking pins to resist horizontal shear dislodgement.

For standard cold storage operating at steady sub-zero temperatures (-18°C to -25°C) with low relative humidity, our 9-stage electrostatic polyester powder coating with zinc-phosphating pretreatment provides excellent adhesion and service life, provided the atmosphere remains below freezing without cyclic condensation.

However, for dock-adjacent cold anterooms, blast freezers with frequent defrost condensation, or marine cold stores (e.g., seafood and meat processing), we strongly specify Hot-Dip Galvanizing (HDG) in compliance with ISO 1461 / ASTM A123. The resulting zinc-iron alloy coating provides a minimum thickness of 65–85 μm, delivering cathodic sacrificial protection that prevents rust even if the steel profile experiences superficial mechanical abrasion from pallet skids.

We source prime, hot-rolled and cold-rolled structural steel coils exclusively from premier domestic mills (such as Baosteel, Shougang, and Ansteel). Primary grades include:

• Q235B (equivalent to ASTM A36 / EN S235JR): Yield strength ≥ 235 MPa, Tensile strength 370–500 MPa. Utilized for horizontal beams, bracing members, shelf decks, and light-to-medium load profiles.
• Q355B (equivalent to ASTM A572 Grade 50 / EN S355JR): Yield strength ≥ 355 MPa, Tensile strength 470–630 MPa. Specified for heavy-gauge high-bay upright columns, heavy cantilever arms, and structural mezzanine beams.

Every export shipment is accompanied by standard EN 10204 Type 3.1 Mill Test Certificates (MTC) verifying chemical composition (carbon, manganese, phosphorus, sulfur) and mechanical tensile, yield, and elongation performance.

With an operational monthly capacity exceeding 30,000 metric tons, our standard production lead time for full-container-load (FCL) orders is typically 2 to 4 weeks following CAD technical drawing and color sign-off.

Our logistical team prepares computerized 3D container stuffing simulations for each order. Upright frames are disassembled into nested column stacks, and box beams are banded in tight wooden-dunnage cradles wrapped in anti-chafing geotextile membranes. This ensures that every 40-foot High Cube (40' HQ) container reaches its maximum allowable gross weight limit (26,000 to 28,000 kg depending on target port limits) or volumetric capacity, substantially lowering your landed freight cost per pallet location.

Yes. We offer turnkey OEM/ODM services for racking distributors, material handling dealers, and system integrators worldwide. Custom branding options include laser-cut logos on column frame protectors, custom powder-coat RAL matching for your corporate identity, customized product labels, and neutral export packaging. Furthermore, we fabricate complete specialized accessories: wire mesh decking, drop-in pallet support bars, pallet flow lanes, column wrap protectors, heavy-duty tubular aisle crash barriers, and steel guide rails for VNA wire/roller guidance.