T50 v T75 ISO Tanks – Which One is Right for You?

Quick Read

• T50 tanks carry pressurised liquefied gases like LPG and ammonia at ambient temperatures.
• T75 tanks carry cryogenic liquefied gases like liquid nitrogen and LNG at extremely low temperatures.
• The decision starts with one question: Does your cargo need pressure or cold?

Introduction

In the global movement of liquefied gases, choosing the right ISO tank isn’t just a technicality — it’s the first step in keeping cargo safe, efficient, and compliant.
Two tank types dominate this space: the T50 and the T75.

The T50 ISO tank is the go-to for pressurised gases at ambient temperatures, while the T75 ISO tank is purpose-built for cryogenic cargo — gases kept so cold they can only remain in liquid form at extreme sub-zero temperatures.

Getting this choice wrong can lead to safety hazards, product loss, and costly delays. Getting it right? That’s the foundation of a smooth, incident-free shipment.

1. What Are T50 ISO Tanks?

T50 tanks are designed for pressurised liquefied gases that do not require refrigeration but need containment under high pressure.

Key Features:

• Pressure rating: 16–25 bar
• Temperature range: Ambient
• Insulation: Minimal or none
• Typical capacity: 24,000–27,000 litres
• Cargo examples: LPG, anhydrous ammonia, butadiene, propylene

Advantages:

• Efficient for gases stable at ambient temperatures under pressure
• Lower operational costs compared to refrigerated tanks
• Widely used in industrial, fuel, and manufacturing supply chains

2. What Are T75 ISO Tanks?

T75 tanks are designed for cryogenic liquefied gases.

Cryogenic means substances stored and transported at extremely low temperatures, often below -150°C, so they remain in liquid form. Examples include liquid nitrogen, LNG, and liquid oxygen.

Key Features:

• Pressure rating: Up to 10 bar
• Temperature range: As low as -196°C (depending on cargo)
• Insulation: Multi-layer vacuum insulation to limit heat transfer
• Typical capacity: 20,000–22,000 litres
• Cargo examples: Liquid nitrogen, oxygen, argon, LNG, carbon dioxide

Advantages:

• Maintains ultra-low temperatures over long distances
• Preserves cargo purity and stability
• Critical for sectors like healthcare, food processing, and energy

3. T50 v T75 – Side-by-Side

Feature	T50 ISO Tank	T75 ISO Tank
Cargo Type	Pressurised liquefied gases	Cryogenic liquefied gases
Pressure Rating	16–25 bar	Up to 10 bar
Temperature	Ambient	Cryogenic (-196°C range)
Insulation	Minimal / none	Advanced vacuum insulation
Typical Capacity	24,000–27,000 litres	20,000–22,000 litres
Examples	LPG, ammonia, propylene	Liquid nitrogen, oxygen, LNG

4. The Moment of Truth – Picking Your Tank

Choosing between a T50 and a T75 isn’t about flipping a coin — it’s about matching the laws of physics to the demands of your cargo.

Picture two very different journeys:

• A shipment of LPG headed across the country — it sits comfortably at ambient temperatures but must be held under high pressure. This is a T50 mission: robust and reliable without refrigeration.
• A load of LNG bound for an overseas terminal — without deep-freeze conditions, it would evaporate before the ship left port. This is a T75 job: engineered for extreme cold with precision insulation.

The choice becomes clear the moment you ask:

Does my cargo need pressure, or does it need cold?

Get that answer right, and everything else — transit time, infrastructure, regulations — falls neatly into place.

Conclusion

When it comes to T50 v T75, the deciding factor is simple:

• Pressurised cargo → T50
• Cryogenic cargo → T75

Every other consideration — from route length to handling facilities — builds on that one decision. The right match keeps your cargo safe, your operations efficient, and your shipments on schedule.