Sheet metal storage presents a constant trade-off between accessibility and floor space. Stacking sheets on floor stands consumes valuable square footage and risks edge damage; placing them in standard pallet racks often requires special lifting attachments. Herochu, established as a Sheet Metal Racks & Storage Systems Manufacturer, eliminates this compromise through purpose-built designs that combine vertical density with ergonomic retrieval. With a 16,000㎡ factory, 300 employees, and 16 years of export experience, the company produces racks that integrate seamlessly into both manual and automated warehouses. This article details Herochu’s systematic approach to sheet metal racking – from material science and structural engineering to surface finishing and global certification.
Why Sheet Metal Demands Dedicated Storage Systems
Unlike uniform boxes or palletized goods, sheet metal arrives in varying dimensions (1m×2m to 2.5m×6m), thicknesses (0.5mm to 25mm), and surface finishes (galvanized, stainless, painted). Standard selective racks with wooden decks allow thin sheets to bend between beam supports, creating permanent deformation. Additionally, stacked sheets develop edge burrs that scratch adjacent surfaces when slid out. A specialized Sheet Metal Racks & Storage Systems Manufacturer must address three core requirements: full planar support, tilt prevention, and damage-free extraction. Herochu’s product line meets each through engineered features described below.
Herochu’s Sheet Metal Rack Configurations
The company offers four primary rack types optimized for flat stock:
- Laser-Cut Metal Shelving – Uprights are roll-formed from 2.5mm thick steel with laser-cut oblong holes at 50mm centers. Shelf beams snap into these holes using a keyhole-and-tab system, allowing height adjustment without tools. The shelf decks are fabricated from 1.5mm corrugated sheet with formed edges, providing stiffness that prevents deflection even under 2-tonne loads. For thin sheets (≤1mm), optional hardboard liners distribute point loads.
- Drawer-Type Metal Shelving – Each drawer rides on heavy-duty telescopic slides with a 100% extension ratio. Drawer beds are constructed from 3mm plate with a 20mm upturned front lip, preventing sheets from sliding off during opening. A mechanical interlock permits only one drawer open per column, preventing tip-over. Drawer capacities range from 500kg to 2000kg, with widths up to 2400mm to accommodate standard 4×8 ft sheets.
- Cantilever Sheet Racks – Designed for long sheets (up to 8m), these racks feature inclined arms that tilt sheets back 5 degrees, using gravity to keep stacks flush against the backstop. Arm tips have replaceable nylon pads that resist abrasion. A typical bay holds 12 arms, each supporting 300kg, for a total of 3.6 tonnes per side.
- Heavy-Duty Metal and Pipe Shelving – A multi-purpose system where the bottom two levels are solid steel decks for sheet pallets, and the upper levels become tubular cradles. This hybrid is popular in metal service centers that handle both flat and long products.
End-to-End Quality Control: From Coil to Customer
Herochu operates a closed-loop quality system covering every production stage. Raw steel coils – sourced from approved mills such as Baosteel or Shougang – undergo spectrometer verification of carbon content and yield strength before cutting. During roll forming, laser sensors continuously monitor profile dimensions, rejecting any upright with more than 1mm deviation over 3 meters. Welding stations use robotic arms programmed with specific wire feed speeds and travel angles for each joint type. Post-weld, all load-bearing welds receive ultrasonic testing; any indication of porosity or incomplete fusion triggers a full batch review.
After fabrication, each sheet metal rack enters the electrostatic spray line. The five-stage pretreatment (alkaline wash, rinse, acid wash, rinse, phosphate conversion) ensures adhesion. Epoxy-polyester powder is applied at 70–90 kV, then cured at 180°C for 20 minutes. The resulting coating achieves 500+ hours of salt spray resistance per ASTM B117 – critical for sheet metal racks storing galvanized coils, where dissimilar metal contact can accelerate corrosion.
Load Testing as a Non-Negotiable Step
Before any rack ships, Herochu performs a dynamic load test at 125% of the rated capacity. For a sheet rack rated at 2000 kg per shelf, the test applies 2500 kg using calibrated steel billets arranged to simulate actual sheet distribution. Deflection is measured at mid-span: acceptable limits are L/300 for beams and L/200 for shelf decks. Tubing storage components undergo a rolling resistance test where loaded arms are forced to deflect laterally; retention fingers must prevent tube displacement at forces up to 10% of the load weight. Test data is logged into a database accessible to customers via batch number, providing traceability for safety audits.
Automated Sheet Metal Warehouses
For high-volume operations, Herochu designs automatic loading and unloading metal material warehouses. These systems use a stacker crane with a vacuum suction head array capable of lifting single sheets from a stack without marring the surface. The crane traverses aisles between storage columns, each column holding up to 30 sheets separated by foam-lined dividers. An integrated WMS tracks each sheet’s grade, thickness, and location. One automotive stamping plant using this system reduced sheet retrieval time by 70% and eliminated floor storage altogether. The automated racks share the same structural profiles as Herochu’s static racks, simplifying spare parts inventory.
Certifications and International Market Access
Herochu operates under ISO9001:2015, with annual surveillance audits. All sheet metal racks and storage systems comply with GB/T 27924-2011 (Chinese industrial storage equipment standard) and JB/T 11270-2012. For EU exports, CE certification to EN 15512 (rack design) and EN 15635 (safe application) is available. Herochu can also arrange UKCA, EAC, or AS4084 certification based on customer requirements. These credentials are particularly important for multinational manufacturers that require their storage vendors to meet regional safety laws. As a Sheet Metal Racks & Storage Systems Manufacturer, Herochu regularly provides certification packages to support customer insurance and workplace safety inspections.
OEM and ODM Engineering Support
Herochu’s technical team includes structural engineers, mechanical designers, and automation specialists – all with an average of eight years of industry experience. For OEM clients, Herochu can produce racks to third-party drawings, including proprietary hole patterns or brand embossing. For ODM projects, the team designs entirely new systems based on customer application data: sheet sizes, weight per stack, retrieval frequency, and forklift turning radius. Recent ODM examples include a cantilever rack with integrated weighing scales for inventory counting and a drawer rack with pneumatic-assisted opening for heavy sheets. Minimum order quantities for custom designs are flexible, thanks to Herochu’s modular tooling system that allows rapid changeovers.
Conclusion
Choosing the right Sheet Metal Racks & Storage Systems Manufacturer directly impacts material damage rates, retrieval speed, and warehouse safety. Herochu combines 16 years of hands-on experience, a 300-person workforce, and a 16,000㎡ factory equipped with automated production lines to deliver racks that outperform generic solutions. From laser-cut shelving and drawer systems to fully automated warehouses, every product undergoes rigorous load testing and corrosion-resistant coating. For global customers needing CE, ISO, or AS certified equipment, Herochu provides complete documentation and support. When flat stock storage becomes a bottleneck, Herochu’s engineered racks offer a systematic, scalable solution.
