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When businesses in the UK need to transport bulk liquids, gases, or powders safely and efficiently, ISO tank containers – also known as tanktainers – are often the go-to solution. Built to strict International Organization for Standardization (ISO) regulations, these containers are trusted by industries worldwide, from food and beverage producers to the chemical, oil, and gas sectors.

At S Jones Containers, we supply and advise on ISO tank solutions for companies across Birmingham, the West Midlands, and the UK. This guide explains what ISO tanks are, the different types available, and why they are essential for safe, compliant transport.

What Is an ISO Tank Container?

An ISO tank container is a stainless-steel cylindrical vessel built within a standard 20ft shipping frame. The tank is insulated and often protected with layers such as glass wool and Glass Reinforced Plastic (GRP), ensuring the safe transport of sensitive or hazardous cargo.

ISO tanks are used for carrying:

  • Food-grade liquids such as juices, wine, edible oils, and dairy
  • Fuel and petroleum products
  • Industrial solvents and chemicals
  • Compressed gases including LPG, ammonia, and CO₂
  • Powders and grains for the agricultural sector

What makes ISO tanks different from standard containers is that they are manufactured, tested, and certified to international ISO standards. This guarantees safety, compliance, and efficiency in global transport chains.

Types of ISO Tank Containers

The type of ISO tank you need depends on the product being carried. The main categories include:

  • Food-grade ISO tanks – designed exclusively for consumable products
  • Reefer ISO tanks – refrigerated tanks for perishable liquids
  • Gas ISO tanks – engineered for compressed and liquefied gases
  • Silo / storehouse ISO tanks – used for powders, grains, or dry bulk goods

ISO Tank Codes and Their Applications

ISO tanks are further classified by “T-codes,” which define the pressure, lining, and specification required for different products:

  • T1 ISO tank – for light liquids
  • T4 ISO tank – suitable for edible and non-edible oils
  • T11 ISO tank – for non-hazardous chemicals
  • T14 ISO tank – for hazardous chemical transport
  • T50 ISO tank – designed for LPG and ammonia gas
  • T75 ISO tank – for liquefied gases such as nitrogen or oxygen
  • Rubber-lined ISO tanks – resistant to corrosive acid-based chemicals

By choosing the correct tank code, businesses can ensure full regulatory compliance and avoid costly transport risks.

ISO Tank Container Specifications

To qualify as an ISO container, the tank must meet strict standards covering size, durability, and safety.

  • Frame dimensions: 20ft long x 8ft wide x 8ft 6in high
  • Capacity: typically between 17,500 – 26,000 litres
  • Filling limits: must be at least 80% full to reduce surge, but no more than 95% full to allow for thermal expansion
  • Pressure testing: each tank must pass minimum test pressures set by its T-code

Every ISO tank is also issued with a Container Safety Certificate (CSC), confirming it is suitable for international use.

Safety Features of ISO Tanks

Because ISO tanks often carry hazardous or volatile cargo, they are fitted with robust safety features, including:

  • Pressure relief valves – prevent over-pressurisation
  • Manholes and spill boxes – allow safe inspection and maintenance
  • Vapour valves – balance internal and external pressure
  • Burst discs – emergency release if pressure exceeds safe limits
  • Mounted thermometers – for external shell temperature monitoring

Regular inspections (every 2–5 years depending on cargo type) are mandatory to keep tanks in compliance.

Why UK Businesses Choose ISO Tank Containers

ISO tank containers are the preferred choice for bulk transport across the UK because they offer:

  • Reliability: certified to international safety and durability standards
  • Versatility: can carry hazardous, non-hazardous, food-grade, or chemical products
  • Cost-efficiency: reduce risk of leaks, cargo loss, or contamination
  • Durability: stainless-steel construction with protective linings extends lifespan

From manufacturers exporting edible oils to chemical companies moving corrosives, ISO tanks ensure secure and efficient logistics.

ISO Tank Containers in the UK – Sales and Hire

At S Jones Containers, we work with businesses nationwide to supply, convert, and maintain ISO tanks. Based in the West Midlands, we are ideally positioned to support companies across Birmingham, Wolverhampton, Derby, and beyond.

We provide:

  • ISO tank containers for sale UK – purchase new or used units for long-term operations
  • ISO tank hire West Midlands – flexible rental options for projects and seasonal demand
  • ISO chemical transport solutions Birmingham – tailored advice for hazardous cargo

With over 40 years of experience in shipping container conversions, we are trusted by UK businesses for practical, compliant, and cost-effective solutions.

Get Expert Advice on ISO Tank Containers

If your business is considering ISO tank containers for transporting liquids, gases, or chemicals, our experts can help. We’ll advise you on the right tank type, specification, and compliance requirements for your industry.

Contact us today to:

  • Request a quote for ISO tank sales or hire
  • Speak directly with our container specialists
  • Get advice on certification, safety, and maintenance

Call us on 01922 741751 or complete our quick online enquiry form to get started.

Final Thoughts

ISO tank containers are a critical part of safe and compliant logistics for many UK industries. With their robust construction, versatile applications, and adherence to strict ISO standards, they provide a reliable solution for bulk transport of liquids, gases, and powders.

By working with a trusted UK supplier like S Jones Containers, you gain more than just equipment – you access decades of experience, expert advice, and a partner committed to keeping your operations running smoothly.


S Jones Containers Ltd

Anglian Road,
Aldridge, Walsall,
West Midlands,
WS9 8ET

Company Reg Number: 3747019
VAT Number: 729700231

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