--- title: "Container ISO Codes" description: "Shipping Containers of Manchester offers a range of shipping and storage containers within the Greater Manchester area." url: "https://shippingcontainersofmanchester.co.uk/blogs/container-iso-codes" date: "2026-04-27T13:26:24+00:00" language: "en-GB" --- ![Open Top Container](https://shippingcontainersofmanchester.co.uk/images/opentopcontainer.jpg) # Understanding Container ISO Codes At [Shipping Containers of Manchester](https://shippingcontainersofmanchester.co.uk/), we supply [ISO-certified containers](https://shippingcontainersofmanchester.co.uk/containers) that meet the strict international standards required for safe and compliant transport worldwide. Knowing how ISO codes work ensures businesses and individuals make informed choices when buying or hiring containers. ## What is a Container ISO Code? An ISO code is a unique identifier assigned under **ISO 6346**, the international standard for container identification. These codes establish a universal system that enables ports, customs, and shipping companies to track and manage containers consistently across global supply chains. ## Why are ISO Container Codes Important? - **Global Uniformity:** ISO codes provide a common language for logistics operators worldwide. - **Efficiency:** They simplify tracking, storage allocation, and container movements. - **Safety:** Codes specify container size and weight limits, preventing overloading and unsafe use. - **Compliance:** ISO markings ensure your unit meets international shipping regulations, avoiding costly fines or shipment delays. ## How are ISO Container Codes Structured? Each ISO container code contains four key elements: - **Owner Code:** Three letters showing the company that owns the container. - **Equipment Category Identifier:** Usually “U” for freight containers. - **Serial Number:** A unique six-digit code identifying the container. - **Check Digit:** A number used to validate the full code and prevent errors. Example: **MSCU 123456 7** “MSC” identifies the owner, “U” confirms it’s a freight container, “123456” is the serial number, and “7” is the check digit. ## Common ISO Codes for Container Types - **Dry Storage Containers:** 22G1 / 22G0 general cargo units. - **High Cube Containers:** 45G1 offering extra height for bulky goods. - **Reefer Containers:** 45R1 refrigerated units for food, pharmaceuticals, and perishables. - **Open Top Containers:** 22U1 suited for oversized cargo and machinery. - **Tank Containers:** 22T1 are designed for the transport of liquids and gases. ## Where to Find the ISO Code on a Container ISO codes are clearly displayed on the outside of the container, typically on the doors and side panels. This enables quicker and more reliable inspection, tracking, and customs processing. ## Why It Matters When You Buy or Hire from Us Every container supplied by Shipping Containers of Manchester complies with ISO 6346 standards. Whether you choose a [20ft storage container](https://shippingcontainersofmanchester.co.uk/containers/20ft-storage-container), a [40ft high cube](https://shippingcontainersofmanchester.co.uk/containers/40ft-storage-container), or a customised [specialist conversion](https://shippingcontainersofmanchester.co.uk/services), your unit will always be certified, safe, and ready for both domestic use and international shipping. Using ISO-certified containers ensures compliance, minimises unnecessary risks, and guarantees the secure transportation of your goods. Need expert advice on **container ISO codes** or want to hire a compliant container in Greater Manchester? Call [0330 0130 636](tel:03300130636) or request a [fast online quote](https://shippingcontainersofmanchester.co.uk/container-quote) today. ## Frequently Asked Questions on Container ISO Codes ### What does ISO stand for in shipping containers? ISO stands for International Organisation for Standardisation, which sets global standards, including ISO 6346 for container identification. ### Are all containers ISO certified? Not always. Containers used for international shipping must be ISO certified, while some domestic storage containers may not carry ISO markings. ### Why is the check digit significant? The check digit validates the container number and prevents errors in booking, customs, and tracking systems. ### Can I use a non-ISO container for export? No. Export shipments require ISO-compliant containers. Non-ISO units are fine for static storage or domestic use only. ### Where do I find the ISO code on my container? It’s usually painted or plated on the container’s exterior doors and sides for easy identification during shipping and inspection. ## Schema ```json { "@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [ { "@type": "ListItem", "position": 1, "name": "Home", "item": "https://shippingcontainersofmanchester.co.uk" }, { "@type": "ListItem", "position": 2, "name": "Blog", "item": "https://shippingcontainersofmanchester.co.uk/blogs" }, { "@type": "ListItem", "position": 3, "name": "Container ISO Codes", "item": "https://shippingcontainersofmanchester.co.uk/blogs/container-iso-codes" } ] } ``` ```json { "@context": "https://schema.org", "@type": "Article", "mainEntityOfPage": { "@type": "WebPage", "@id": "https://shippingcontainersofmanchester.co.uk/blogs/container-iso-codes" }, "headline": "Container ISO Codes", "image": { "@type": "ImageObject", "url": "https://shippingcontainersofmanchester.co.uk/images/opentopcontainer.jpg" }, "publisher": { "@type": "Organization", "name": "Shipping Containers of Manchester", "logo": { "@type": "ImageObject", "url": "https://shippingcontainersofmanchester.co.uk/images/mcr-logox64.png" } }, "author": { "@type": "Person", "name": "Shipping Container of Manchester", "url": "https://shippingcontainersofmanchester.co.uk/blogs/container-iso-codes" }, "datePublished": "2025-04-29T10:19:31+00:00", "dateCreated": "2025-04-29T10:19:31+00:00", "dateModified": "2025-10-01T14:43:31+00:00" } ``` ```json { "@context": "https://schema.org", "@type": "FAQPage", "mainEntity": [ { "@type": "Question", "name": "What does ISO stand for in shipping containers?", "acceptedAnswer": { "@type": "Answer", "text": "ISO stands for International Organisation for Standardisation, which sets global standards, including ISO 6346 for container identification." } }, { "@type": "Question", "name": "Are all containers ISO certified?", "acceptedAnswer": { "@type": "Answer", "text": "Not always. Containers used for international shipping must be ISO certified, while some domestic storage containers may not carry ISO markings." } }, { "@type": "Question", "name": "Why is the check digit significant?", "acceptedAnswer": { "@type": "Answer", "text": "The check digit validates the container number and prevents errors in booking, customs, and tracking systems." } }, { "@type": "Question", "name": "Can I use a non-ISO container for export?", "acceptedAnswer": { "@type": "Answer", "text": "No. Export shipments require ISO-compliant containers. 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