How thick sheet metal is used in large industrial tanks
The plate thickness in larger industrial tanks is influenced by several factors, such as the volume of the tank, possible pressure conditions, choice of material and the environment in which the tank is used in the process industry.
For stainless steel storage tanks and pressure vessels, stainless steel 304 or acid-proof 316/316L is often used. Plate thicknesses can vary from around 3 mm up to 25 mm or more, depending on the tank size, construction and application.
Processöverskott offers tanks in different dimensions and designs, where plate thickness and construction vary depending on model and previous use. This makes it possible to find tanks that are adapted for different types of processes in, for example, food, chemistry and other process industries.
Function and structure
Larger industrial tanks are designed to withstand mechanical stress and pressure. The plate thickness affects both strength and service life.
- Tank body main plate
- Bottom and lid
- Welds and reinforcements
- Internal equipment and piping
- Surface treatment and passivation
Materials and construction
Stainless steel 304 and 316
Stainless steel 304 is often used in atmospheric tanks where the corrosion impact is moderate, while acid-resistant 316/316L is used in environments with higher corrosion resistance requirements, for example in contact with chlorides or certain chemicals in the process industry.
Plate thickness and construction are usually adapted according to the size of the tank, the application and possible pressure conditions. For larger tanks, plate thicknesses can vary from around 3 mm up to 25 mm or more.
Common characteristics of materials and construction may include:
- Molybdenum content in acid-proof 316/316L, which can contribute to increased resistance to corrosion
- Low carbon content in 316L, which is used to facilitate welding and reduce the risk of impact in welding zones
- Surface treatments such as grinding or polishing, which may occur depending on cleaning requirements and application
Process Surplus offers 304 stainless steel and 316/316L acid-proof tanks in various sizes and designs, with materials and construction varying depending on model and previous use
Pressurized and atmospheric solutions
Pressurized tanks generally require thicker plate to withstand internal pressures. Atmospheric tanks can use thinner plate, but reinforcements are needed for large volumes. The dimensioning is based on PED, CE and other regulations for pressure vessels.
Applications in industry
- Food industry – storage of acids, sugar solutions and CIP systems
- Chemical industry – corrosive chemicals, acids and bases
- Pharmaceutical production – sterile solutions with high hygiene standards
- Water treatment – large volumes with varying chemical composition
Technical options and equipment
- Reinforcements and ribs for large diameters
- Inspection gaps and sampling points
- Agitators and internal process equipment
- Surface polishing and passivation
- Resilient bottoms or protection against thermal expansion
Volumes and capacity
Plate thickness in tanks is influenced by several factors, such as diameter, height, area of use and possible pressure conditions. Even for larger tanks, the plate thickness can vary depending on the design of the tank and the type of process it is intended for.
For tanks up to around 250 000 liters, plate thicknesses can in some cases be in the range of 10-25 mm, while smaller storage tanks are often found with plates around 3-8 mm. However, variations are common depending on construction, choice of material and previous use.
Benefits of correct plate thickness
- Can contribute to stable operation under different pressure and load conditions
- Can reduce the risk of deformation over time, depending on use
- May have an impact on cleaning and resistance to corrosion
- Can be part of the basis for assessment in relation to standards such as PED, CE and ATEX
New and used tanks in stock
Process surplus offers new and used tanks in different sizes and designs for both atmospheric and pressurized applications in the process industry. Plate thickness and dimensioning vary depending on construction, application and previous use.
The range includes tanks with a rolling supply, allowing options to be found to suit different industrial needs. Some tanks may be available for relatively quick delivery.
Choosing the right solution
When selecting the plate thickness, the tank size, pressure conditions, material and operating environment should be considered. Correct sizing ensures long service life and safety in industrial processes.
Executive summary
The plate thickness of larger industrial tanks is an important factor in the strength of the tank and its use in the process industry. The choice of material, such as stainless steel 304 or acid-proof 316/316L, together with the construction and any reinforcements, influence the properties of the tank.
Plate thickness and design vary depending on the application, load and the environment the tank is intended for, for example in food, chemical, pharmaceutical or water treatment.
Process Surplus offers new and used tanks in various sizes and designs, where the construction and choice of materials differ depending on the model and previous use.
Frequently asked questions about plate thickness in industrial tanks
How thick is the plate used in larger industrial tanks?
The plate thickness in industrial tanks varies depending on the tank size, construction and application in the process industry. Smaller atmospheric tanks can have plates from around 3 mm, while larger tanks and pressurized applications can in some cases have plate thicknesses up to 25 mm or more.
The choice is influenced by factors such as volume, possible pressure conditions, choice of material (stainless steel 304 or acid-proof 316/316L) and the environment in which the tank is used. Variations are common, especially for used tanks where performance depends on previous use and construction.
Process Surplus offers new and used tanks in various sizes and designs, providing the opportunity to find options for several types of industrial needs.
Does the tank pressure affect the plate thickness?
Yes, pressurized tanks require thicker plate than atmospheric tanks. The higher the internal pressure, the greater the plate thickness and reinforcements needed to ensure structural integrity and safe operation.
What material is often used for thick plates?
Stainless steel 304 and acid-proof 316/316L are often used in tanks with larger plate thicknesses in the process industry. The choice of material depends on the application, the properties of the liquid and the corrosion resistance requirements.
Acid-resistant 316/316L is used in environments where tanks are exposed to more demanding media, such as contact with chlorides or certain chemicals. Stainless 304 is often used in more moderate impact applications.
The choice of material can therefore vary depending on the process, industry and previous use, for example in food, chemicals and pharmaceuticals.
How does plate thickness affect hygiene and corrosion resistance?
The right sheet thickness combined with passivation and surface polishing improves corrosion resistance and hygiene. Thin sheet can be deformed more easily and is at risk of micro-infringement, while thick sheet provides stability and longevity.
Can used tanks have the same plate thickness as new ones?
Process surplus offers used tanks where the condition and design can be checked in connection with the sale, for example regarding plate thickness, welds and possible corrosion.
Assessing the construction and condition of the tank can give an idea of its usability in different types of processes. Properties and service life vary depending on previous use, maintenance and operating conditions.