---
title: "How To Ship Steel Coils"
description: "Looking to ship steel coils overseas? Our comprehensive guide details preparation, permits, and transportation. Request a free quote today."
url: "https://shippinginternational.co.uk/how-to-ship/steel-coils"
date: "2026-05-02T05:29:28+00:00"
language: "en-GB"
---

![Steel Coils](https://shippinginternational.co.uk/images/si/Shipping-Steel-coils1.webp)

 # Shipping Steel Coils Internationally

  ## The Technical Challenges of Steel Coil Logistics

Steel coils are among the most demanding cargo types in global trade. These high-density cylinders provide the raw material for the UK automotive, construction, and white-goods industries. However, their physical properties create significant risks during transport. A single coil can weigh over 25 tonnes, concentrating immense pressure on a small area of a container floor. If it moves even slightly during a sea voyage, the resulting kinetic energy can breach the container walls or destabilise the vessel. At Shipping International, we use 25 years of experience to manage these risks, ensuring your industrial cargo moves safely through the global supply chain.

Transporting steel is not a standard freight task. It requires a deep understanding of physics, container engineering, and international safety standards. Whether you ship cold-rolled steel for precision manufacturing or heavy structural coils for infrastructure, you need a lashing plan that exceeds minimum requirements. We focus on preventing the "rolling pin effect" through bespoke timber cradles and high-tension securing systems.

  ## The Rolling Pin Effect: Managing Safety Risks

The cylindrical shape of a steel coil creates a natural tendency to roll. In a maritime environment, where ships face pitch, roll, and heave, an unsecured coil becomes a destructive force. This is the rolling pin effect. If a lashing strap fails or a timber block splits, the coil can gain momentum, generating enough force to punch through the corrugated steel of a container. This does more than damage the cargo; it puts the ship’s crew and the vessel's integrity at risk.

To control this risk, we use multiple layers of restraint. Friction is the first line of defence. We place heavy-duty rubber friction mats beneath the timber bedding to increase the resistance between the load and the container floor. The second layer is physical blocking. We build custom timber cradles that fit the specific radius of each coil. The final layer is the lashing system, which ties the coil directly to the container’s reinforced anchor points.

  ## Pre-Shipment Preparation and Specifications

Accuracy in the initial cargo description is vital for a safe booking. We need the exact specifications of each coil before we select the container and equipment. This includes the outer diameter, the inner eye diameter, the width, and the total weight. You must also specify the steel grade, as some surfaces require protection against moisture and physical scratching.

### Verified Gross Mass (VGM) Requirements

Under international law, every shipper must provide a **Verified Gross Mass** (VGM). This is the total weight of the packed container, including the steel coil, the timber cradles, and the container’s tare weight. Inaccurate weight data is a leading cause of maritime accidents. We ensure all weights are verified using calibrated equipment to meet the standards set by the [International Maritime Organisation](https://www.imo.org/) (IMO). You can check the UK’s specific rules on the [Maritime and Coastguard Agency](https://www.gov.uk/guidance/verification-of-the-gross-mass-of-packed-containers-vgm) website.

### HS Codes and Duty Classification

Correct classification ensures you pay the right amount of import duty and VAT. Steel products are subject to complex trade rules, including anti-dumping duties and quotas. Most steel coils fall under Chapter 72 of the [UK Trade Tariff](https://www.gov.uk/trade-tariff). For example, flat-rolled products of iron or non-alloy steel often start with the code 7208. We help you navigate these codes to ensure your [customs clearance](https://shippinginternational.co.uk/services/customs-clearance/) process is efficient and legally compliant.

  ## Container Selection and Floor Loading Limits

You cannot load a heavy steel coil into a standard 40ft container. The floor of a 40ft container is designed to support evenly distributed cargo, and a 25-tonne coil would likely crush the cross-members. Instead, we exclusively use **20ft heavy-duty containers**, often rated for 30 tonnes. These units have a shorter span between the main floor joists, providing the structural strength needed for concentrated loads.

### Bedding and Weight Distribution

A steel coil must never rest directly on the container floor. This would create a point-load that exceeds the floor's PSI (pounds per square inch) rating. We use longitudinal timber beams, known as bedding, to spread the weight across as many floor cross-members as possible. This distribution protects the container from structural failure. We only use ISPM15 heat-treated timber for these structures to ensure they meet global biosecurity standards and pass inspection at ports such as London Gateway and Felixstowe.

  ## Coil Orientation and Lashing Strategies

The way we position the coil depends on its dimensions and the handling equipment available at the destination. We devise a custom lashing plan for every shipment.

### Eye to Sky (Vertical Orientation)

In this position, the coil rests on its flat end, with the "eye" pointing upward. This is a very stable orientation, as it removes the risk of rolling. However, it requires the coil to be secured onto a heavy-duty pallet or a custom-built timber base. We use "choke" lashings that wrap around the coil's eye and tie back to the container floor, preventing the unit from sliding during transit.

### Eye to Wall (Horizontal Orientation)

This is the most common method for larger coils. The eye points towards the side walls of the container. While this makes the coil easier to lift with a forklift "C-hook," it creates a high rolling risk. We use transverse timber blocking to create a "well" for the coil to sit in. We then apply multi-point lashing, using high-tensile steel wire or polyester strapping to lock the coil to the container’s lashing rings.

### The Fuse Principle in Lashing

We adhere to the **fuse principle**. This ensures that the combined breaking strength of the lashing straps is lower than the strength of the container's anchor points. If the straps were stronger than the rings, a sudden jolt could rip the anchor points out of the container frame. By balancing the system, we ensure the container remains structurally intact even under extreme stress. Our standard is to provide a total restraint capacity of at least twice the weight of the coil.

![Shipping steel coils](https://shippinginternational.co.uk/images/si/Shipping-Steel-coils.webp)

  ## Customs Clearance and Documentation

Post-Brexit trade has made [customs clearance](https://shippinginternational.co.uk/services/customs-clearance/) for steel more complex. UK businesses must now manage EORI numbers and precise declarations for all movements to and from the EU. We handle the entire documentary chain to prevent port delays.

### Essential Document Set

- **Commercial Invoice:** Detailing the weight, value, and steel grade.
- **Packing List:** Confirming the number of coils and the type of packing used.
- **Certificate of Origin:** Vital for claiming preferential duty rates or meeting quota requirements.
- **Bill of Lading:** The legal contract of carriage and title document for your [sea freight](https://shippinginternational.co.uk/services/sea-freight/) shipment.
- **Mill Test Certificate:** A technical document from the manufacturer proving the chemical and physical properties of the steel.

We use the **Customs Declaration Service** (CDS) to lodge entries. For US-bound shipments, we also manage the mandatory ISF filings required by U.S. Customs and Border Protection. Accurate documentation is the best way to avoid the high costs of port storage and inspections.

  ## Risk Management and Marine Insurance

The industrial nature of steel does not mean it is invulnerable. Cold-rolled and galvanised steel coils are highly sensitive to moisture. Even a small amount of condensation inside the container can cause "white rust" or surface oxidation, which may render the steel useless for automotive or aesthetic applications. We use desiccants and moisture-proof liners to protect the cargo during its journey across different climate zones.

### Institute Cargo Clauses (A)

Standard carrier liability is limited by weight and rarely covers the full value of a steel shipment. If a 20-tonne coil is damaged, the carrier’s payout might only be a few hundred pounds. We strongly recommend **All Risks** marine insurance under Institute Cargo Clauses (A). This covers the full replacement value, including loss, damage, and **General Average**. General Average is a maritime law where all cargo owners must share the cost of saving a ship from a disaster. Insurance handles these massive claims, protecting your business from financial shock.

  ## Inland Transport and Final Mile Delivery

The journey does not end at the port. Moving a 25-tonne container through the UK road network requires specialised [road freight](https://shippinginternational.co.uk/services/road-freight/) equipment. Standard trailers may not have the axle strength or lashing points to safely move heavy steel.

We use a fleet of reinforced skeletal trailers and "coil carriers" equipped with a central well. This well allows the coil to sit lower, reducing the centre of gravity and providing a physical stop against movement. Our drivers are trained in heavy-lift logistics and understand the specific requirements for securing steel loads on UK motorways. We coordinate the collection and delivery to ensure the container moves directly to the factory floor, avoiding expensive stays at the terminal.

  ## Frequently Asked Questions

#### Can I ship steel coils in a 40ft container?

We do not recommend this for heavy coils. Most 40ft containers have a floor strength designed for a spread of weight, not a concentrated 20-tonne load. A 20ft heavy-duty container is much safer and is the industry standard for steel logistics. If you must use a 40ft unit, it requires a significant amount of extra timber bedding to spread the load, which increases your costs.

#### What is a Mill Test Certificate, and do I need one?

A Mill Test Certificate (MTC) is a document provided by the steel mill that proves the material meets specific industrial standards. While not always mandatory, most commercial buyers require it for quality assurance. It also helps customs officers verify the steel grade for duty purposes.

#### How much does it cost to ship a steel coil to the USA?

Costs depend on current ocean freight rates, fuel surcharges, and the coil's weight. Because steel is heavy, you will often reach the container's weight limit before you fill the space. We provide transparent quotes that include the base freight, lashing materials, and US [customs clearance](https://shippinginternational.co.uk/services/customs-clearance/). Contact our team for a bespoke price.

#### What are the rules for timber used in lashing?

All timber used for bedding, cradles, and blocking must be **ISPM15-**compliant. This means it has been heat-treated to kill pests. The timber must carry the official IPPC stamp. If the timber is not compliant, the destination country may refuse entry or order the cargo to be destroyed or returned to the UK at your expense.

#### Does the weight of the coil affect the transit time?

Weight does not affect the ship's speed, but it does affect the loading process. Heavy-lift containers require specific slots on the vessel, usually at the bottom of the stack, to keep the ship stable. This may mean your container takes slightly longer to load or unload during port operations.

#### What happens if my steel coil arrives with rust?

If you discover rust upon delivery, you must note it on the Proof of Delivery (POD) and take high-resolution photos immediately. Contact us within 24 hours so we can start the claims process with the insurance provider. Protecting your cargo with desiccants and VCI (Vapour Corrosion Inhibitor) liners during packing is the best way to prevent this issue.

  ### Ready to Optimise Your Global Logistics?

Get expert advice and a transparent, no-obligation quote for your next shipment. Contact the Shipping International team today to discover a more reliable way to ship.

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