Container Dimensions
20ft Specialised Containers
20ft Specialised (Tank, Flexitank, Half-Height)
Container Projects supplies high-quality specialised units to industrial and commercial sectors nationwide. Whether you require long-term bulk liquid storage through container sales or project-specific equipment through container hire, we ensure efficient supply and transport. For detailed figures on any unit, you can request a container quote today. We manage the logistics for 20ft specialised equipment to ensure your site requirements are met with precision and safety.
Choose the right specialised container
Specialised containers are designed for cargo that cannot be accommodated in standard dry units. Container Projects assists in selecting units based on payload, volume, and substance type. A CSC plate is a safety approval plate required for international shipping. Tare is the weight of an empty container. Payload is the maximum weight of cargo the container can carry. One-trip units are manufactured in Asia and used once for cargo transport to the UK, typically arriving in excellent condition.
| Container Type | External Length (mm) | External Width (mm) | External Height (mm) | Typical Tare (kg) |
|---|---|---|---|---|
| ISO Tank | 6058 | 2438 | 2591 | 3600 |
| Half-Height | 6058 | 2438 | 1280 | 3380 |
| Flexitank Base | 6058 | 2438 | 2591 | 2250 |
20ft ISO Tank Containers
A tank container features a stainless steel pressure vessel held within an ISO frame. Container Projects provides these for bulk liquid transport, including chemicals and food-grade substances. The frame allows for standard stacking and transport by rail or sea. We ensure all tanks are certified and inspected to meet stringent safety standards.
Flexitank Solutions
A flexitank container is a standard 20ft dry unit fitted with a large, flexible bag for the transport of non-hazardous liquids. This setup turns a 20ft general-purpose box into a liquid carrier. This is a cost-effective alternative to ISO tanks for items such as vegetable oils and juices. The bag is typically single-use, eliminating the need for return-cleaning logistics.
20ft Half-Height Containers
The half-height unit is designed for high-density cargo such as minerals, scrap metal, or industrial pipes. These units have a low centre of gravity and often feature a removable tarpaulin or steel lid. They are frequently used on offshore rigs or construction sites where heavy loads are craned into the unit from above. Many half-height units are built to DNV 2.7-1 specifications for offshore use.

Hire or buy specialised units
Container Projects advises on the best route for equipment acquisition. Hire is suitable for short-term contracts or one-off shipments. Buying provides long-term value for permanent storage or fixed logistics routes. We offer both one-trip and used stock. Used units are graded as wind- and watertight, ensuring no weather ingress and protecting your cargo. IICL stands for the International Institute of Container Lessors, which defines high-quality repair standards for used containers.
Delivery access, siting, and placement
Safe delivery of specialised equipment depends on site preparation and access for our container haulage vehicles. Container Projects uses hiab trucks to position units exactly where they are needed.
- Width and Height: The delivery vehicle requires a minimum width of 10ft and height clearance of 15ft.
- Ground Surface: Units must be placed on firm level ground. Concrete, tarmac, or compacted gravel are acceptable. Soft or uneven ground can cause the unit to sink or twist.
- Obstructions: Check the area for overhead power cables, low branches, and underground services that may not support the weight of the truck.
Security, compliance, and aftercare
Container Projects ensures all units are secure and compliant. Standard flexitank units are fitted with a lockbox to protect the padlock. ISO tanks require regular testing and validation of their pressure systems. We provide aftercare support to help you maintain your equipment, including advice on cleaning and gasket replacement. Our experts at About Us can guide you through the specific safety requirements for transporting hazardous cargo.
How Container Projects handles supply and delivery
- Identify the specific liquid or cargo requirements for your project.
- Select the appropriate unit from our container dimensions guide.
- Receive a detailed quote based on the unit type and delivery postcode.
- Verify site access and ground stability for a hiab vehicle.
- The unit is delivered, positioned, and handed over by a professional operator.
Frequently asked questions
What is the capacity of a 20ft flexitank?
A standard flexitank can typically hold between 16,000 and 24,000 litres of non-hazardous liquid. For more technical data, view our container types page.
Do half-height containers come with lids?
Yes, they are usually supplied with a removable tarpaulin or a hardened steel roof for security. Please specify your preference when you contact us for a quote.
Are ISO tanks suitable for food-grade products?
Yes, we supply stainless steel tanks specifically cleaned and certified for food-grade liquids to prevent contamination during transport.
Contact Info
Container Projects LTD
298 Sandycombe Road,
Kew, Richmond,
Surrey
TW9 3NG
Tel: +44 (0) 208 948 5955
Fax: +44 (0) 208 948 3618
Our Services
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Office Hours
Monday : 9:00-17:30
Tuesday : 9:00-17:30
Wednesday : 9:00-17:30
Thursday : 9:00-17:30
Friday : 9:00-17:30
Saturday : Closed
Sunday : Closed
