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Nanjing Ciho Racks Co., Ltd. is a premier structural engineering manufacturer and global supplier specializing in high-density warehouse storage systems and heavy-duty industrial racking solutions. With decades of technical expertise and a state-of-the-art manufacturing campus in China, we deliver custom-engineered logistics storage architectures designed for maximum volumetric efficiency, rigorous structural safety, and long-term durability.
Our comprehensive portfolio spans advanced systems including selective pallet racks, Double Deep Pallet Racking, Drive-in / Drive-thru systems, cantilever structures, multi-tier mezzanine floors, structural steel platforms, dynamic gravity flow racks, and highly integrated automated storage/retrieval system (AS/RS) components. We actively serve Fortune 500 logistics providers, automated distribution hubs, e-commerce fulfillment centers, cold-chain operations, and heavy industrial manufacturing facilities worldwide.
Engineered to comply with stringent international standards (such as EN, FEM, RMI, and AS4084), Ciho Racks employs robust raw materials, high-precision automated rolling mills, robotic structural welding, and eco-friendly electro-static powder coating systems to guarantee flawless quality in every upright frame, beam, and connector pin exported globally.
"Our Engineering Mission: To redefine vertical space optimization and maximize global supply chain throughput by fabricating highly secure, customized, and seismically compliant material handling systems."
Double Deep Pallet Racking is a low-investment, high-density storage layout that strikes the ideal balance between 100% selective systems and deep-density systems (like Drive-in or Push-back). By placing two rows of selective pallet racks back-to-back, Double Deep configurations store pallets four deep between operating aisles. This reduces the aisle-to-rack ratio dramatically, recovering up to 30% to 35% of floor area otherwise lost to forklift aisles, and boosting total storage capacity by up to 50% under the same footprint.
Operating under the First-In, Last-Out (FILO) inventory protocol, this configuration is optimally paired with specialized deep-reach trucks or forklifts equipped with pantograph extenders. It is an exceptionally productive engineering system for operations carrying high volumes of homogeneous stock with moderate turnover rates, where immediate single-pallet selectivity is not a primary operational bottleneck.
| System Attribute | Selective Pallet Racking | Double Deep Pallet Racking | Drive-In Racking |
|---|---|---|---|
| Storage Density | Low-Moderate (Baseline) | High (Up to 50% higher than Selective) | Very High (Up to 75% higher than Selective) |
| Selectivity | 100% Immediate Access | 50% Immediate Access (FILO per 2 bays) | Lowest Selectivity (FILO per lane) |
| Aisle Width Requirements | 3.0m - 3.5m (Standard Forklift) | 3.2m - 3.8m (Deep Reach Forklift) | 3.0m - 3.5m (Truck enters system) |
| Cost-per-Pallet Location | Low (Basic components) | Low-Medium (Requires guide rails/special truck) | Medium-High (Heavy structural bracing) |
| Best Applications | High SKU variety, fast-moving items | Medium SKU variety, batch production, cold storage | Low SKU variety, high volume per SKU, slow-moving |
Our state-of-the-art facility utilizes high-grade raw steel and computerized automation to ensure exceptional structural load integrity.
At Nanjing Ciho Racks Co., Ltd., we recognize that no two warehouses operate identically. Environmental variance, floor flatness, pallet weight distributions, and forklift dynamics necessitate a deeply engineered approach. Our dedicated team of mechanical designers and structural engineers collaborates with global system integrators to customize and manufacture solutions tailored to unique spatial limitations.
From specific upright profiles (ranging from 80mm to 140mm width options) to customized structural steel load beams, we compute static and dynamic loads using finite element analysis (FEA) to withstand specialized material handling requirements.
Double Deep operations rely heavily on forklift precision. We fabricate custom ground-mounted guide rails and entry guides that protect racking structures from impact, allowing operators to enter bays swiftly and safely.
We work with prime Q235B and Q355 structural carbon steel. For extreme conditions like sub-zero cold storage or chemical processing facilities, we offer hot-dip galvanized (HDG) coating or specialized chemical-resistant powder finishes.
Our OEM/ODM process begins with architectural CAD mapping of the facility. We analyze parameters such as concrete slab thickness, seismic zone acceleration factors, average pallet heights, and maximum reach forklift capacities. By applying calculations matching standard RMI, FEM 10.2.02, and AS4084 guidelines, we develop structural simulations that optimize beam safety factors while keeping material weight cost-effective.
Global supply chain volatility has made manufacturing agility and geographic sourcing key strategic parameters. Sourcing your warehouse components from Nanjing Ciho Racks Co., Ltd. provides distinct structural advantages:
No outsourced processes. Total governance over raw steel formulation, welding parameters, and surface pre-treatment cycles.
Industrial structural steel storage rack configurations are highly regulated globally. Failure to comply with regional codes can lead to localized system damage, structural failures, or expensive regulatory penalties. Nanjing Ciho Racks designs and engineers all custom Double Deep Racking solutions with strict adherence to target market regulatory frameworks:
Our steel columns, base plates, and load beams are physically verified and computed to meet the Rack Manufacturers Institute (RMI) standards. We integrate seismic base plates and dynamic anchoring calculations tailored to regional seismic designations across the USA and Canada.
We comply fully with European Norm (EN) standards governing adjustable pallet racking structures. Our production steps guarantee exact dimensional tolerances, welding standards under ISO 3834-2, and structural safety margins aligned with FEM safety codes.
We offer customized structural configurations specifically verified under the AS4084 steel storage racking standard, ensuring structural integrity under local warehouse operating requirements and compliance audits.
To assist our international partners, we deliver exhaustive assembly drawings, technical load charts, 3D structural simulations, and detailed video installation guidelines. For complex logistics centers, we coordinate with regional installation teams and general contractors to ensure the structural assembly aligns perfectly with the engineering blueprints.
As the logistics industry transitions towards Automation and Industry 4.0, structural racking is no longer a static steel asset. At Nanjing Ciho Racks, we are driving innovation by adapting Double Deep systems to interface seamlessly with modern smart technologies:
Get answers to technical queries, design decisions, and pricing considerations for double-deep storage solutions.
Double Deep systems require a specialized deep-reach truck or a standard forklift equipped with dual-pantograph (reach extenders) or telescopic forks. Because the truck must reach two pallets deep into the racking frame, the forklift operator relies on integrated camera systems, height selectors, and physical guide rails in the racking bays to ensure secure pallet placement at higher elevations.
Double Deep Racking works on a First-In, Last-Out (FILO) logic for each pair of bays. Since the rear pallet cannot be retrieved until the front pallet is removed, direct selectivity is reduced to 50%. This structure is ideal for medium-density storage of similar products or batches with longer shelf-lives, where high-speed immediate access to every pallet is not required.
While capacities are highly customizable, standard configurations from Ciho Racks support between 800 kg and 1,500 kg per pallet position. Our design team engineers the horizontal beams and vertical frame dimensions based on target pallet weight, beam length, and local seismic criteria to ensure a standard 1.5 safety factor.
Yes. Standard selective racking can often be converted to Double Deep by adding special row spacers, reinforcing upright frames, and upgrading to heavier load beams. This conversion also requires updating your material handling equipment to reach-extension trucks.
Because visibility decreases at the second pallet position, we recommend installing rear pallet safety stops (back stops), floor-mounted guiding rails for the forklifts, heavy-duty upright column guards, and mesh safety screens. These features prevent accidental over-travel and protect structural columns from potential forklift impacts.
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Ciho Racks