The Herochu heavy-duty drawer system with customizable sizes is a vertical, multi-tier storage solution engineered for the classified storage of sheet metal, steel plates, aluminum panels, and flat stock materials in industrial environments. The system’s defining characteristics are its heavy load-bearing capacity—each drawer supports 2,000 to 5,000 kg—and its dimensional configurability, with drawer count, drawer dimensions, tier spacing, and overall rack height all adaptable to the specific material profile and spatial constraints of each customer’s facility.

This drawer system addresses the fundamental challenge of industrial flat stock storage: storing large, heavy sheet materials in a manner that maximizes vertical space utilization, protects material surfaces from damage, enables rapid single-operator retrieval of any individual sheet, and adapts to the diverse material dimensions and storage volumes encountered across different industrial operations.

Modular Design and Customizable Configuration

Configurable Tier Count

The Herochu heavy-duty drawer system is available in configurations ranging from 3 to 15 tiers. This range accommodates diverse operational requirements: a small fabrication shop storing a limited variety of sheet stock may require only 3 to 4 tiers, while a large steel distribution center managing extensive inventory across multiple material grades and thicknesses may require 10 to 15 tiers to achieve adequate storage volume and classification granularity. The tier count is specified at order configuration, and the rack structure is engineered to support the cumulative load of all fully loaded tiers.

Customizable Drawer Dimensions

Drawer dimensions are configurable to match the specific sheet products stored in each facility. The system accommodates standard sheet sizes including 4×8 foot (approximately 1200×2400 mm) and 5×10 foot (approximately 1500×3000 mm) products, as well as larger industrial plate dimensions up to 6000×2000 mm. Five standard model configurations define the dimensional range:

Beyond these standard configurations, drawer dimensions, clear space between tiers (default 120 mm), and tier count are all customizable. This configurability ensures that each rack installation is matched to the customer’s specific material dimensions rather than forcing the customer to adapt material handling processes to a fixed-dimension storage unit.

Optional Mobile Configuration

For operations requiring flexibility in storage positioning, optional casters can be specified, converting the stationary rack into a mobile sheet storage rack configuration. This option supports facilities where storage layout is reconfigured periodically, where sheet material must be transported between workstations, or where temporary storage positioning is required for specific production runs.

Heavy-Duty Load-Bearing Structure

Q235B High-Strength Steel Main Frame

The main frame is constructed from Q235B high-strength structural steel, specified for its 235 MPa minimum yield strength. The dual-beam design employs two parallel support beams per tier level, distributing vertical load forces across a wider structural footprint than single-beam alternatives. This load distribution reduces beam deflection under maximum rated load and prevents the progressive frame distortion that degrades drawer slide alignment and compromises operational smoothness over time in lighter-duty racks.

Frame members are thickened relative to standard industrial shelving, providing the cross-sectional stiffness necessary to support 5,000 kg per tier without lateral sway or torsional flex. All structural welds are continuous—no stitch welding—to eliminate stress concentration points that can initiate fatigue cracking under cyclic loading conditions.

Reinforced Cold-Rolled Steel Drawer Construction

Each drawer is constructed from reinforced cold-rolled steel. Cold-rolled steel offers superior dimensional accuracy and surface finish compared to hot-rolled alternatives—a critical specification for drawer components that must interface with precision ball bearing slide rails. The drawer frame is boxed and gusseted at stress-bearing corners, and the drawer base is engineered to support the full per-tier load without sagging or deformation under long-term heavy pressure.

The thickened Q235 steel drawer frame maintains dimensional stability under sustained loads of 2,000 to 5,000 kg across long storage cycles. No sagging, no rail binding, no structural fatigue.

Hot-Dip Galvanized Surface Treatment

Surface treatment options include hot-dip galvanizing, which provides a zinc coating that resists rust and corrosion in factory environments where humidity, metal dust, and cutting fluid mists are present. Galvanized finishes maintain structural protection even when the surface is scratched or abraded—a significant advantage over painted surfaces where scratches expose bare steel to oxidation. This treatment ensures long service life in demanding industrial environments.

Full-Extension Drawer Mechanism

100 Percent Pull-Out Design

Each drawer achieves 100 percent full extension through industrial-grade ball bearing slide rails. Full extension means that when a drawer is fully pulled out, the entire drawer length is accessible from the rack face. No portion of the stored sheet material remains recessed within the rack depth. This specification eliminates the need for operators to reach into the rack, tilt sheets, or partially unload drawers to access rear-positioned material.

Mechanical Assistance Operation

Drawers are extended and retracted through a mechanical assistance discharge method. A hand-cranked gear mechanism provides mechanical advantage, translating modest rotational input at the crank handle into the linear force required to move a drawer carrying several tons of sheet material. This design eliminates dependence on electric power, hydraulic systems, or pneumatic supply—the rack operates entirely on mechanical principles, reducing maintenance requirements and eliminating failure modes associated with powered storage systems.

Smooth Sliding and Safety Lock

Industrial-grade ball bearing slide rails guarantee smooth pull-out and push-in with minimal operator effort, even at maximum drawer load. A safety lock mechanism prevents accidental drawer sliding during loading and unloading operations. Once a drawer reaches full extension, the lock engages automatically, holding the drawer in position against vibration, minor impacts, or floor-level shifts. The operator must deliberately release the lock before retracting the drawer.

Space Optimization and Storage Density

Vertical Layered Storage Strategy

The Herochu heavy-duty drawer system replaces horizontal sheet storage sprawl with vertical layered storage. The standard 6-tier configuration stores six layers of sheet material within the floor footprint of a single storage bay. Aisle requirements are reduced to the drawer extension depth—no forklift maneuvering width is required between storage rows.

This configuration improves warehouse storage density by 30 to 70 percent compared to conventional sheet storage methods. The system stores up to 60 percent more sheet metal in the same floor area versus traditional cantilever racks, a density gain that translates directly into deferred or eliminated capital expenditure on warehouse expansion.

Compatibility with Existing Lifting Equipment

The drawer system is designed for integration with existing material handling infrastructure. Overhead cranes, jib cranes, forklifts with sheet manipulator attachments, vacuum lifting devices, and magnetic lifters all interface directly with the fully extended drawers. The drawer face position aligns with standard crane hook travel heights, and full extension ensures that crane engagement occurs outside the rack envelope, eliminating collision risk between lifting equipment and rack structure.

Classified Storage and Retrieval Efficiency

Multi-layer drawer separation enables systematic classification of stored sheet material by material type (carbon steel, stainless steel, aluminum, alloy plate), by thickness range, by sheet specification, or by project and customer lot. Label slots on each drawer front provide immediate visual identification—operators can determine drawer contents without extending the drawer.

Retrieval time is reduced by up to 70 percent compared to conventional sheet storage. Crank the target drawer, engage the lifting device, extract the selected sheet, retract the drawer. One person can perform the entire retrieval sequence without assistance.

Application Environments

• Metal fabrication shops: Raw sheet storage feeding cutting, bending, and welding operations
• Laser cutting workshops: Direct sheet loading from storage to cutting bed
• Sheet metal warehouses: High-density classified storage for steel distribution
• Steel distributors and service centers: Inventory management by grade, thickness, and customer lot
• Aluminum and stainless steel plate storage: Material segregation preventing cross-contamination and surface damage
• Factory material handling: Integration with existing crane and forklift infrastructure for material flow

Engineering Standards and Quality Compliance

The Herochu heavy-duty drawer system with customizable sizes meets CE and ISO quality standards for industrial storage equipment. Each rack is configured to customer specifications—tier count, drawer dimensions, clear space, surface treatment, and optional mobility features tailored to the operational environment. Structural calculations validate frame performance at maximum rated capacity, ensuring that the rack performs as specified under sustained industrial loading conditions.

This is a storage system built for configurability and sustained heavy-duty operation: Q235B steel structure, cold-rolled drawer construction, full-extension ball bearing slides, mechanical crank operation, customizable dimensions, and load ratings verified against real-world material handling requirements. The Herochu heavy-duty drawer system adapts to the facility, not the other way around.