Oil paintings can be dismantled and rolled for transportation, but be sure not to roll them thinly, otherwise the color layer of the oil painting will be cracked thinly in the future. Rolled transportation is suitable for situations where you are flying to your destination by yourself. Oil paintings that are not too large can be carried on the plane with you, which is the least risky way.
It is still very risky to transport oil paintings through postal services. International shipping is all done in containers, and it is impossible to guarantee that the items will not be squeezed and collided. Using paper tubes will probably only bring you psychological comfort. Of course, sometimes it depends on your luck.
The standard rule for international art transportation is to transport the painting intact with the frame. If there is an outer frame, use an outer frame. A wooden box of appropriate size must be specially made to contain the painting. The inside of the box is set on the side. The protrusions ensure that the painting is in a fixed position and cannot be shaken. The front and back do not touch the wall of the box. The painting should be covered with a layer of mica paper first, then wrapped with air-cushion film and foam paper, placed in the box to fix it, and then covered with foam The plastic fills the pores and then seals the box. Once the box is sealed, it can be transported. The principle of transportation is to transport art by land rather than by air. There are professional companies in Europe for land transportation of art. They provide large freight trucks with constant temperature and humidity inside the box, which can minimize the risk of art being transported during transportation. Due to damage caused by changes in temperature and humidity during the journey, land transportation is currently limited to Eurasia. Of course, the shipping costs for this kind of company are unimaginably expensive.
If it is a valuable work of art, but not so valuable that it needs to be transported by land, you can pack it for shipping and mail it. However, if you have an acquaintance who flies to and from the country, you can It is best to ask someone to take it to your destination. Asking someone to take it can reduce some of the risks of mailing.