Ironwork, especially steel roll coil, is usually transported to the customers over land or by sea. For fast and safe transportation of steel roll coil without damaging it, it is necessary that steel roll coil is surely fixed. These days, apitong, which is fully imported from abroad, is being used to fix the steel roll coil. However, because of apitong harshness, it often damages the coil that would be hard to fix. Recovering damaged coil is almost impossible, and we have to look for a new type of dunnage, which would be able to substitute apitong. This paper discusses various types of reinforcement, as well as rectangular and trapezoid dunnages. We will consider how rolling occurs and what happens when the carrier starts and stops moving. Thus, it will be possible to design a dunnage, which would not damage ironwork and had better recovery and softness than the existing apitong.