By Luis Lopez, AI transportation consultant, CEO of Go Hub.io Holdings Corp and subsidiaries, and host of the Freight Guru Podcast
Steel coils look simple: a roll of metal on a trailer. In practice they are among the most demanding loads in trucking. They are dense, they can shift with tremendous force if not secured correctly, and the finished surface can be ruined by a little moisture or a careless strap. Whether you are a shipper, a broker, or a carrier new to metals, these are the ten things to understand before a coil leaves the mill or warehouse.
1. Coil orientation changes everything
Coils are loaded in different orientations, and the orientation determines how they must be supported and secured. The common terms are:
- Eye-to-sky: the hole in the center of the coil (the “eye”) faces up, and the coil sits flat on its side.
- Eye-to-side: the eye faces the sides of the trailer, so the coil can roll forward or backward if not restrained.
- Eye-to-rear (or eye-to-front): the eye faces the back or front of the trailer, so the coil wants to roll side to side.
The shipper usually decides orientation based on the product and how the receiver will unload it. The carrier needs to know in advance, because it affects what equipment and securement gear the driver brings.
2. Racks, cradles, and blocking
A round coil on a flat deck has very little contact area and a natural tendency to roll. That is why coils are typically placed in coil racks or cradles, or supported with chocks and timbers that keep them from moving. Some coils ship on skids prepared by the mill. Confirm with the shipper whether coils will be skidded, how they will be presented, and whether the driver should bring racks, timbers, or other blocking material.
3. Flatbed, coil-well, or covered
Most coils move on open-deck equipment. Standard flatbeds are common, and for many metal shippers they are the default. Some carriers run trailers with a recessed well or coil bed built into the deck, designed to cradle coils and lower their center of gravity. Other shipments call for covered equipment, such as a flatbed with a rolling tarp system or a van-style trailer, when the product must stay dry and the receiver can unload it that way.
The right choice depends on coil size and orientation, the loading and unloading method at each end, and how sensitive the product is to weather. For an overview of open-deck options, see our guide to flatbed freight.
4. Securement rules exist and are specific
Federal cargo securement rules are in 49 CFR Part 393, and they include specific provisions for metal coils based on orientation and how the coil is loaded. Drivers and carriers hauling coils need to know and follow those rules exactly, along with any additional requirements from the shipper. Shippers and brokers should not try to dictate the number of chains or straps; they should confirm that the carrier is experienced with coils and understands the regulations.
5. Moisture and rust are constant risks
Many coil products, especially cold-rolled, coated, or finished steel, are sensitive to moisture. Rain, road spray, and condensation can cause rust or staining that makes the product unusable for its intended purpose. That is why many metal shippers require tarps, and some specify the type of tarp and how it must be applied. Ask the shipper directly whether tarps are required, and make sure the tarp requirement is written on the rate confirmation so there is no confusion at pickup. Our article on water damage freight claims explains why this detail matters later.
6. Edge protection
Chains and straps pressing on a coil can damage its edges, and coil edges can cut straps. Edge protectors, corner guards, and protective sleeves help on both counts. The shipper may supply protection or require the carrier to bring it. Damaged edges can lead to rejected product, so treat edge protection as part of the load, not an optional extra.
7. Weight concentration
A coil puts a great deal of weight on a small footprint. That has two consequences. First, the trailer deck and frame must be rated and in good condition for concentrated loads. Second, the coil’s position on the trailer affects how weight is distributed between the axles, which matters for legal axle weights and for how the truck handles. Experienced coil haulers know where to place coils for their equipment. If you are booking the load, share accurate weights and dimensions so the carrier can plan placement before arriving. Before tendering, review our questions to ask before booking a flatbed load.
8. Mill pickup appointments
Steel mills and service centers often run tight loading schedules. Trucks may need a specific appointment, safety equipment for the driver, site orientation, and the right paperwork to get through the gate. Missing a window can push a pickup to the next day. Brokers should share the facility’s requirements with the carrier well before dispatch, including personal protective equipment, load securement expectations, and whether the driver is allowed or expected to assist with loading.
9. Documentation and exceptions
Before the driver leaves, the bill of lading should accurately describe the coils, including count, identifiers such as heat or coil numbers if the shipper uses them, and weights. Any visible damage, rust, or wet packaging should be noted on the bill of lading at pickup. At delivery, the receiver should inspect and note any exceptions before signing. Photos at both ends help everyone. Our guide to photo evidence for freight claims covers what to capture.
10. Common types of coil damage
Knowing what damage looks like helps everyone inspect better:
- Edge damage: dents, nicks, or crushed edges, often from securement or handling.
- Telescoping: the inner wraps shift outward from the rest of the coil, so it looks like an extended telescope. This can happen from sudden stops or improper securement.
- Rust and staining: from moisture exposure during transit or storage.
- Surface scratches and marks: from contact with chains, debris, or poorly prepared dunnage.
- Crushed or flattened coils: from point loading or improper blocking.
Any of these can lead to a claim, and they are much easier to address when documented clearly at the time of delivery.
Plan the details before the truck arrives
Steel coil freight rewards preparation. Confirm orientation, equipment, tarp and edge protection requirements, appointment rules, and weights before dispatch. Use carriers with real coil experience, and document condition at every hand-off. Those habits prevent most problems before they reach the road.
For more conversations on freight and AI, subscribe to the Freight Guru Podcast.
About the author: Luis Lopez is a Miami-based AI transportation consultant and logistics entrepreneur, the CEO of Go Hub.io Holdings Corp and subsidiaries, and host of the Freight Guru Podcast.
