Cold Storage Racking – The Optimal Storage Solution for Frozen Warehouses

What Is Cold Storage Racking and Why Do You Need a Specialised Type?

In recent years, Vietnam’s cold chain industry has grown dramatically, at an average rate of 12–15% per year. According to data from VASEP – the Vietnam Association of Seafood Exporters and Producers, demand for cold storage for food, pharmaceuticals and specialty consumer goods surged after the pandemic, putting enormous pressure on domestic cold storage infrastructure.

When ordinary racking is used in cold storage, serious problems appear within the first few months:

• ⚠ Brittle fracture of the steel: Ordinary steel loses much of its ductility below -10°C, with a risk of sudden collapse without warning.
• ⚠ Peeling paint and rust: Moisture, cold and condensation quickly make ordinary paint peel, allowing corrosion to spread.
• ⚠ Bolts loosening through expansion and contraction: Constant temperature changes make metal expand and contract unevenly, so ordinary bolts gradually loosen and destabilise the structure.
• ⚠ Danger to workers: Substandard racking in cold storage is a direct hazard to forklift operators and loading staff.

❄ Long Quyen industrial cold storage racking – withstands -25°C to -40°C, 100-micron moisture-resistant powder coating

The 4 Most Common Types of Cold Storage Racking in 2026

No single type of cold storage racking is best for every situation. Each system has its own pros and cons, suited to different warehouse sizes, goods and operating requirements.

1. Selective Racking for Cold Storage – Flexible and Easy to Operate

Selective racking is a system that gives direct access to every pallet location without moving other goods. In cold storage, it is the ideal choice when you need to:

• ✓Manage many different products (fresh food, processed food, frozen herbs…)
• ✓Apply FIFO (First In – First Out) to manage product shelf life
• ✓Cold storage of 500 m² or more, 6–10 m high
• ✓High inbound/outbound frequency requiring fast handling

2. Drive-In Racking for Cold Storage – Maximising Space

Drive-in racking is a deep-lane storage system that lets forklifts drive right into the racking to place and retrieve pallets. It is the most space-efficient solution in cold storage. Drive-in is popular in frozen warehouses because cold storage space is very expensive due to insulation and refrigeration costs – so making the most of every square metre is the top priority.

🚛 Drive-in racking in a frozen food warehouse – forklifts drive directly into the lanes, using 80–85% of the floor area

3. Radio Shuttle Racking – Automating Cold Storage

Radio shuttle racking combines deep-lane storage with automation technology. Instead of forklifts driving into narrow lanes (dangerous on slippery cold storage floors), you use a remote-controlled self-propelled shuttle to move and place pallets.

4. Double-Deep Racking – The Balanced Solution

Double-deep racking is a variant of selective racking designed to hold 2 pallets in depth instead of 1. It is the ideal middle ground for medium-sized cold storage, where you want higher density than selective racking while keeping flexible stock management.

Technical Standards Cold Storage Racking Must Meet

This is the most important part, and the one many cold storage racking buyers overlook. Under international standards ISO 15629 – Steel static storage systems, cold storage racking must meet the following strict technical requirements:

Steel Material – The Foundation of Everything

Cold storage racking must be manufactured from cold-rolled steel to JIS G3141 (Japan) or ASTM A1008 (USA). Both standards require low carbon content (<0.15%) to ensure toughness at sub-zero temperatures and prevent sudden brittle fracture.

• ⚙Minimum steel thickness: 1.5 mm for upright frames, 1.2 mm for beams
• ⚙Yield strength: Minimum 235 MPa, 355 MPa recommended for heavy loads
• ⚙Impact toughness: At least 27 J at -20°C according to the Charpy V-notch test
• ⚙Carbon content: <0.15% to ensure toughness in deep sub-zero environments

Protective Coating – The Barrier Against Corrosion

This determines the racking’s service life in cold storage. Sub-zero temperatures combined with high humidity when the doors open create ideal conditions for rapid corrosion if the coating is substandard.

🔬 7-step surface treatment for cold storage racking: cleaning → rust removal → phosphating → drying → primer → topcoat → inspection

• 🎨Coating thickness: 60–100 microns in total, including 15–20 microns of primer + 40–60 microns of topcoat
• 🎨Salt spray test: Must pass at least 500 hours to ASTM B117 without any sign of rust
• 🎨Surface phosphating: Mandatory before painting, creating a chemical bond between steel and paint to prevent peeling in damp conditions
• 🎨Powder coating: Electrostatic powder coating gives far better adhesion and uniformity than conventional water-based paint

Bolts and Accessories – No Compromises

All bolts, connectors and fittings must be made of 304 or 316 stainless steel. This is where many low-cost racking manufacturers cut corners – ordinary galvanised bolts rust very quickly in damp cold storage.

• 🔩Standard cold storage (-25°C to -35°C): 304 stainless steel is sufficient
• 🔩Ultra-low-temperature storage (-35°C to -40°C): 316 stainless steel is mandatory (contains molybdenum for better corrosion resistance)
• 🔩Bolt grade: Minimum grade 8.8 according to ISO 898-1
• 🔩Safety pin connections: Must have a safety locking mechanism to stop beams from dislodging in a forklift impact

Detailed Comparison of Cold Storage Racking Types 2026

The table below gives a comprehensive comparison of the 4 common types of cold storage racking to help you choose:

5 Steps to Choosing the Right Cold Storage Racking for Your Business

According to the warehouse racking selection guide from Long Quyen, choosing cold storage racking should follow these 5 steps to avoid costly mistakes:

5 Common Mistakes When Choosing Cold Storage Racking

Cold Storage Racking Reference Price List 2026

Cold Storage Racking Applications by Industry