Container House Marking Illustration

The markings on container houses are mainly reflected through container numbers, size and type codes, weight and volume markings, and special markings. Here is a detailed explanation:

I. Container Number Markings Each container has a unique 11-digit standard container number (ISO6346 standard), consisting of three parts:

1. Owner Code: The first three letters represent the owner or operator of the container and must be registered with the International Container Bureau.
2. Equipment Registration Code: The fourth digit or letter indicates the type of container (e.g., U for a standard container, J for a detachable container, Z for a trailer container); the last six digits are a unique serial number, padded with zeros if necessary.
3. Check Digit: The last digit is calculated through a weighted operation of the first 10 digits and is used to verify the accuracy of the container number. For example, in the container number 'TEXU1234567', 'TEX' is the owner code, 'U' indicates a standard container, '123456' is the serial number, and '7' is the check digit.

II. Size and Type Codes The size and type of containers are indicated by codes, such as '45G1' representing a 40-foot high cube container (40HQ). Common sizes include:

• 20-foot Standard Container: Approximately 5.898×2.352×2.390 meters in internal dimensions, with a volume of about 33 cubic meters.
• 40-foot Standard Container: Approximately 12.024×2.352×2.390 meters in internal dimensions, with a volume of about 67 cubic meters.
• 40-foot High Cube Container: Height increased to 2.896 meters, with a volume of about 76 cubic meters.
• Open-Top Container: The top can be opened, suitable for oversized cargo; Flat-Rack Container: No corner fittings at the bottom, suitable for overweight cargo.

III. Weight and Volume Markings Key weight and volume information are marked on the surface of containers:

• MAX.WT (Gross Weight): The sum of the container's weight and the maximum cargo weight, in kilograms (KG) and pounds (LB), serving as the basis for bridge crane load and road weight limits.
• TARE WT (Tare Weight): The weight of the empty container, reflecting the weight of the container itself.
• PAYLOAD (Maximum Cargo Weight): The maximum weight of cargo that can be loaded, i.e., the gross weight minus the tare weight.
• CU.CAP (Maximum Internal Volume): The usable internal space of the container, in cubic meters (CU.M.) and cubic feet (CU.FT.).

IV. Special Markings

1. Overheight Marking: Containers exceeding a height of 2.6 meters must be marked with a yellow background and black numbers to remind operators of height restrictions.
2. Country/Region Code: For example, 'CN' represents China and 'US' represents the United States, used to distinguish the origin of containers.
3. Leasing Company Marking: For example, 'TEX' is the abbreviation for Textainer Group, a container leasing company in the United States.