Industrial & logistics · Reference
A T11 20 ft ISO tank sits in an ISO 668 frame — 6,058 × 2,438 × 2,591 mm (20 × 8 × 8.5 ft) — holds 21,000–26,000 L, weighs 3,500–4,500 kg empty, with a 36,000 kg max gross.
An ISO tank container is quoted by its external frame (Length × Width × Height); the cylindrical vessel and its litre capacity sit inside the standard 20 ft envelope so it stacks like any box container.
| Specification | T11 20 ft ISO tank |
|---|---|
| External length | 6,058 mm / 20 ft (ISO 668 1CC frame) |
| External width | 2,438 mm / 8 ft |
| External height | 2,591 mm / 8 ft 6 in |
| Nominal capacity | 21,000–26,000 L (5,500–6,900 US gal) |
| Tare weight | 3,500–4,500 kg (7,700–9,900 lb) |
| Max gross weight | 36,000 kg (79,370 lb) |
| Min. test pressure | 4 bar (58 psi) |
Source: Tankspan — T11 Tank Container Guide (Tank Types & Specifications)
| Datasheet field | Value |
|---|---|
| Nominal capacity | 25,000 L (6,600 US gal) |
| External L × W × H | 6,058 × 2,438 × 2,591 mm (20 × 8 × 8.5 ft) |
| Tare weight | 3,680 kg (8,113 lb) |
| Max gross weight | 34,000 kg (74,960 lb) |
| Payload | 30,320 kg (66,840 lb) |
| Working / test / relief pressure | 4.0 / 6.0 / 4.4 bar |
| Shell material | Stainless steel ASTM A240 316 / 316L |
| Field | 26,000 L T11 |
|---|---|
| Nominal capacity | 26,000 L (6,870 US gal) |
| External L × W × H | 6,058 × 2,438 × 2,591 mm (20 × 8 × 8.5 ft) |
| Tare weight | 3,940 kg (8,686 lb) |
| Max gross weight | 36,000 kg (79,370 lb) |
| Payload | ≈ 32,060 kg (70,680 lb) |
| Test pressure | 6 bar (87 psi) |
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The frame matches a standard 20 ft container — 6,058 mm long, 2,438 mm wide and 2,591 mm high (20 × 8 × 8.5 ft) — as set by ISO 668 and ISO 1496-3, with a cylindrical tank inside.
Nominal capacity is typically 21,000–26,000 litres (about 5,500–6,900 US gallons); 24,000–26,000 L is the most common size for chemical and food-grade liquids.
Tare is roughly 3,500–4,500 kg and maximum gross weight is 36,000 kg (79,370 lb); older frames were rated to 30,480 kg. Liquid payload is the difference — about 26,000–32,000 kg.
T11 is a UN portable-tank code for tanks over 1.75 m in section rated to a 4 bar minimum test pressure, approved for a wide range of non-hazardous and many hazardous liquids.
Both share the 20 ft ISO frame, but a T14 carries a thicker shell and higher pressure rating for more aggressive or higher-pressure chemicals; T50 codes cover liquefied gases.
Every figure on this page is traced to a named source, linked under each table. Standard sizes come from published standards and established industry references; where a size is a typical range or varies by manufacturer, we say so. Sizes vary by region, model and revision — treat these as the standard reference, and confirm the exact spec of the item you are selling.
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