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When you need to transport hazardous chemicals, acids, or food-grade alcohol, a plastic bag (Flexi Tank) or a simple drum won't cut it. You need the fortress of liquid logistics: the 20ft Tank Container.
Listed in the TraceContainer.com system as "20 Tank", this unit—commonly called an ISO Tank is a stainless steel pressure vessel mounted inside a standard 20ft steel frame. It is built to withstand extreme pressure, corrosion, and rough handling.
This guide explores why the ISO Tank is the safest and most efficient way to ship bulk liquids globally.
20ft Tank Container
What is a 20ft Tank Container?
What is a 20ft Tank Container?
An ISO Tank consists of a cylindrical vessel (usually made of 316L Stainless Steel) held within a 20ft ISO frame.
Intermodal: Because it has the exact same frame dimensions as a standard 20ft dry box, it can be stacked on ships, trucks, and trains alongside regular containers.
Re-usable: Unlike Flexibags, ISO tanks are designed for repeated use. They are washed and certified clean between shipments.
What Can You Ship in a 20 Tank?
What Can You Ship in a 20 Tank?
The ISO Tank is the most versatile liquid carrier in the world.
Hazardous Chemicals (HazMat): Acids, corrosives, flammables, and solvents. (These cannot go in Flexi Tanks).
Food Grade Liquids: Wines, juices, milk, and potable spirits (transported in dedicated "Food Grade Only" tanks).
Gases: Specialized tanks can carry pressurized gases.
ISO Tank vs. Drums vs. Flexi Tanks
ISO Tank vs. Drums vs. Flexi Tanks
Why choose a "20 Tank Container" over 80 drums packed in a dry van?
Volume Efficiency: A 20ft ISO Tank carries 43% more product than a 20ft container filled with drums. You aren't shipping "air" between the barrels.
Safety: ISO tanks are much stronger and less prone to leaks than drums or flexibags.
Features: Tanks can be equipped with steam heating or electric heating systems to keep viscous products (like palm oil or syrup) warm so they can be pumped out easily at the destination.
20ft Tank Specifications
20ft Tank Specifications
While capacities vary, the external frame dimensions are standard.
Tech Tip: You will often hear terms like "T11" or "T14". These are UN Portable Tank codes that define the pressure rating and shell thickness. The T11 is the most common tank for non-hazardous and mild hazardous liquids.
Safety & Maintenance
Safety & Maintenance
Because these tanks often carry dangerous goods, they are subject to strict regulations.
Manhole & Valves: Loading usually happens through a top manhole, and discharge is done via a bottom valve or top airline.
Testing: ISO Tanks must undergo statutory testing (leak tests) every 2.5 years and 5 years to remain in service.
Track Your ISO Tank
Track Your ISO Tank
Whether you are moving Sulphuric Acid or Chardonnay, liquid supply chains require precision. Monitor your ISO Tank fleet in real-time with TraceContainer.com.
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