Metal Structures for Cold Shops and Shock Freezing Chambers

Cold shops or shock freezing chambers impose special requirements on metal structures. Let’s break down which frames, platforms, and barriers work in sub-zero conditions and what to consider when designing and manufacturing them.

Functions of Metal Structures in Cold Shops and Shock Freezing Chambers

Cold shops, shock freezing chambers, and refrigerated warehouses impose different requirements on metal structures than standard production areas. Here, not only load-bearing capacity and ease of operation are important, but also metal behavior at low temperatures, condensate, sanitary requirements, and integration with refrigeration panels and equipment.

Metal solutions in such zones solve several key tasks:

placement and maintenance of equipment (shock freezing tunnels, spiral freezers, conveyors, air coolers);
organization of multi-level space — platforms, mezzanines, service walkways above lines and evaporators;
ensuring personnel safety — guards, handrails, stairs, anti-slip decking;
separation of raw material and finished product flows — barrier guards, guides, process partitions;
protection of sandwich panels and cold room doors from impact loads (trolleys, stackers, reach trucks).

For Tashkent and Uzbekistan as a whole, an additional factor is the temperature difference between the hot outside air and the sub-zero temperatures in the chambers, which increases the requirements for material selection and manufacturing technology.

Types of Metal Solutions: Frames, Platforms, Guards

Frames and Load-Bearing Structures

Frames in cold zones are used for:

supporting refrigeration panels and door portals;
placing air coolers and air ducts;
supporting conveyor lines and spiral freezers;
suspended systems (piping, cable trays, overhead rails).

Possible solutions:

fully stainless steel — for zones with direct contact with food products and frequent washing;
carbon steel with powder coating — for technical zones without direct product contact, but with condensate and low temperatures;
combined — load-bearing frame made of carbon steel, product-contact elements and wash zones made of stainless steel.

Platforms and Service Walkways

Platforms and walkways provide access to air coolers, valves, compressor and auxiliary equipment located above or inside the chambers.

Typical elements:

load-bearing frame made of metal profiles;
decking (chequered plate, grating, perforated stainless steel sheet);
stairs and flights;
guards and handrails at heights that meet safety requirements;
embedded parts for fastening to floors, walls, or slabs.

Guards, Barriers, and Protective Structures

For cold warehouses and shock freezing chambers, the following are critical:

guards along the perimeter of platforms and pits;
impact barriers against stackers and trolleys along walls and panels;
local safety cages around moving equipment (conveyors, lifts);
pallet guides in the racking and gate areas.

These structures can be made of stainless or painted steel, depending on proximity to the product and the washing regime.

Materials: Stainless Steel, Galvanized Steel, and Combined Solutions

Material selection directly affects service life, hygiene, and cost.

Stainless Steel

Used in zones with:

direct or possible contact with the product;
regular washing with chemicals;
high humidity and condensate.

Advantages:

corrosion resistance under low temperatures and high humidity;
smooth surface, convenient for sanitary treatment;
geometric stability during “freeze–defrost” cycles.

Galvanized and Coated Carbon Steel

Used in:

technical rooms (machine rooms, spaces above chambers);
zones without product contact and without aggressive chemicals during washing.

Possible solutions:

hot-dip galvanizing for enhanced protection;
powder coating with surface preparation.

Combined Approach

Often, the optimal balance of budget and performance is achieved by combining:

load-bearing frame — carbon steel with anti-corrosion protection;
decking, handrails, elements in wash zones — stainless steel;
replaceable protective pads on barriers and bumpers — polymers.

This solution helps keep costs down without losing performance characteristics.

Key Technical Requirements for Structures in Cold Environments

Operation at Low Temperatures

Metal behaves differently at −18…−35 °C:

brittleness of certain steel grades increases;
risk of cracks in welds grows if consumables and modes are selected incorrectly;
the effect of thermal deformation intensifies.

Therefore, manufacturing uses:

proper laser cutting and metal bending modes;
proven welding technologies for stainless steel and low-temperature conditions;
expansion gaps and connection details.

Hygiene and Sanitation

Structures in cold shops must ensure:

no “pockets” and cavities where moisture and product residues can accumulate;
minimal number of hard-to-reach areas for washing;
smooth transitions, radii, closed ends.

To achieve this, the following are used:

precise laser cutting for accurate geometry;
argon arc welding of stainless steel with subsequent weld finishing;
well-thought-out design of fastening nodes.

Integration with Refrigeration Panels and Engineering Systems

Frames and platforms must take into account:

location of refrigeration panels and joints;
mounting points for air coolers and refrigerant lines;
passages and service zones for personnel;
potential thermal bridges and condensate formation points.

At the calculation stage based on the specification, it is important to incorporate all these aspects immediately to avoid rework during installation.

Production Cycle: From Specification-Based Calculation to Installation

1. Collection of Initial Data and Calculation Based on the Specification

The first step is the technical specification. Based on it, the following are performed:

preliminary strength and layout calculation;
material selection (stainless / painted steel / combined option);
estimation of metal volume and labor intensity.

The result is a commercial offer with indicative manufacturing and delivery times.

2. Design and Detailing

At this stage, the following are carried out:

3D models of frames, platforms, guards;
detailing for laser cutting and metal bending;
fastening nodes to existing structures and floors;
embedded parts for equipment and utilities.

Competent detailing reduces the risk of errors during installation and speeds up assembly.

3. Manufacturing of Metal Structures

The production cycle includes:

laser cutting of sheet and profile;
metal bending to obtain profiles, brackets, stiffeners;
welding of nodes and frames;
if necessary — powder coating or other anti-corrosion treatment.

For stainless steel, welding modes and weld quality are controlled separately.

4. Delivery and Installation

Installation time depends on:

readiness of the site (floors, panels, utilities);
accessibility of zones (work in an operating shop or on new construction);
volume of metal structures and work at height.

At the specification stage, it makes sense to indicate immediately whether turnkey installation is required or only delivery of finished structures.

What Affects Cost: Main Factors

Below is a generalized table of factors that determine the final price of metal structures for cold shops and shock freezing chambers.

Factor	How it affects cost	Comment
Material (stainless / coated steel)	One of the key price drivers	Stainless is more expensive but justified in wash and product-contact zones
Volume of metal and weight of structures	Direct impact on material consumption and labor	Large frames and platforms require more metal and reinforced nodes
Geometry complexity	Increases design and manufacturing time	Non-standard shapes, large number of nodes and joints
Type of coating and treatment	Adds operations and materials	Powder coating, galvanizing, grinding and polishing of stainless steel
Hygiene and washing requirements	Affect design and weld treatment	Closed ends, radii, no cavities, additional finishing
Loads and structure height	Determine profile sections and type of fastenings	Platforms for heavy equipment and tall frames are more expensive than light guards
Installation conditions	Affect crew composition and timing	Work in an operating shop, night shifts, tight conditions increase installation cost
Project deadlines	Urgency can increase price	Accelerated production and installation require resource reallocation
Need for author supervision	Adds engineering hours	Site visits, approvals, supervision of installation

This is why it is impossible to quote a correct price without a detailed specification — a calculation for a specific site is required.

Design Features of Frames for Shock Freezing Chambers

Shock freezing chambers differ from standard cold rooms by lower temperatures and high air velocities.

When designing frames, the following are considered:

dynamic loads from fans and moving equipment parts;
vibrations and their impact on fastenings and welds;
aerodynamics — so that structures do not interfere with air distribution;
thermal engineering nodes — minimizing thermal bridges through the metal frame;
possibility of maintenance and dismantling of individual elements without stopping the entire line.

Often, the frame for a shock chamber is made split: load-bearing elements are located outside the cold zone, and only necessary parts with thermal breaks are brought inside.

Platforms, Stairs, and Guards in Cold Zones: Operational Nuances

Decking and Anti-Slip Solutions

In low temperatures and condensate conditions, the risk of slipping increases. Therefore:

chequered plates or grating are used;
drainage of meltwater and condensate is designed;
smooth, polished surfaces in walkways are avoided.

Guards and Handrails

Guards must withstand:

mechanical impacts (trolleys, containers);
thermal deformations;
possible impacts from ice and frozen products.

Stainless steel is chosen for wash zones; painted steel is possible for technical platforms.

Stairs and Service Access

When designing, it is important to ensure:

a comfortable angle of inclination and stair width;
safe intermediate landings at height;
sufficient width for carrying tools and equipment components.

All these parameters are fixed in the specification and taken into account in the calculation.

Typical Mistakes When Ordering Metal Structures for Cold Shops

Lack of a clear specification

Loads, operating modes, and equipment layout are not specified. As a result — rework, additional approvals, and longer lead times.
Incorrect material selection

Attempting to save money by using painted steel where stainless is required. After 1–2 seasons, corrosion and sanitation issues appear.
Ignoring thermal deformations

Frames are rigidly fixed to panels and other structures without compensation. This leads to cracks, panel deformation, and loss of tightness.
Geometry that is difficult to wash

Many hard-to-reach areas, open cavities and ends. In cold shops, this quickly becomes a sanitary risk.
Underestimating loads from equipment and transport

Barriers and guards are not designed for real impacts from stackers and trolleys. The result is damaged panels and repeated repairs.
Lack of coordination with engineering systems

Refrigerant lines, cable routes, and drainage are not considered at the design stage. During installation, structures have to be modified on site.
Tight deadlines without regard to the technological cycle

Trying to “speed up at any cost” without adjusting supply and installation schedules leads to clashes on site and downtime.

These mistakes can be avoided with a detailed specification and early involvement of the metal structure manufacturer in project discussions.

How to Prepare a Specification for Calculation and Shorten Lead Times

To obtain an accurate calculation and realistic deadlines, the technical specification should include:

purpose of the zone (shock freezing, refrigerated warehouse, cold shop);
temperature regime (operating temperature range);
equipment layout schemes or room plan;
required structures: frames, platforms, stairs, guards, barriers;
loads (equipment weight, expected transport loads);
preferred material (stainless / combined solution / painted steel);
special hygiene and washing requirements;
installation conditions (operating shop or new site, height, accessibility);
desired manufacturing and installation deadlines.

The more complete the initial data, the higher the accuracy of the calculation and the lower the risk of adjustments during the project.

FAQ on Metal Solutions for Cold Shops and Freezing

1. Is it mandatory to make all structures from stainless steel?
No. It is important to separate zones: where there is product contact and regular washing, stainless steel is advisable. In technical and service zones, combined solutions with painted steel are possible.

2. Can standard platforms and frames be used without adapting them to the site?
For cold shops and shock freezing chambers, solutions tailored to specific layouts and equipment are usually required. Universal platforms rarely account for actual loads and the specifics of refrigeration panels.

3. How to account for future changes in equipment layout?
At the specification stage, you can include a load reserve and provide universal fastening nodes. This will allow reconfiguring part of the structures without complete dismantling.

4. How critical is weld quality in cold zones?
Under low temperatures and vibrations, weld quality is especially important. Poor welds crack faster and, in wash zones, become sources of corrosion and contamination.

5. Is it possible to install metal structures in an already operating cold warehouse?
Yes, but this affects timing and work organization. Phased installation, coordination with warehouse operating modes, and additional safety measures are required.

6. How to plan project timelines?
Timelines depend on metal volume, structure complexity, and production workload. At the calculation stage based on the specification, an indicative schedule is usually drawn up: design, manufacturing, delivery, installation.

7. What if there are no finished drawings, only an idea and a room plan?
You can start with a basic specification and layout. Based on this data, preliminary design and calculation are performed, then details and nodes are refined.

8. Is it possible to combine new metal structures with existing ones?
In most cases, yes, but an inspection of existing structures and verification of their load-bearing capacity are required. This data is desirable to include in the specification.

When It Makes Sense to Send a Specification for Calculation

If you are planning:

to launch a new cold shop or shock freezing chamber;
to upgrade an existing refrigerated warehouse;
to install new equipment requiring frames, platforms, and guards;
to reinforce panel protection and organize safe walkways,

the most rational step is to prepare a technical specification and submit it for calculation.

Submit a request for calculation

For a prompt calculation of metal structures for cold shops and shock freezing chambers, specify:

city and site (Tashkent, region, type of facility);
purpose of the zone (shock freezing, refrigerated warehouse, cold shop);
temperature regime and operating schedule (shifts, seasonality);
list of required structures (frames, platforms, stairs, guards, barriers);
expected loads (equipment weight, transport, pallets);
preferred material (stainless / combined solution / painted steel);
availability of plans and schemes (plans in any format, site photos);
installation requirements (deadlines, work in an operating shop, height and access restrictions);
desired commissioning date.

Based on this data, it is possible to prepare a justified cost and time estimate and offer several material and technology options for your tasks.