Thin-walled steel pipe in our time is a rather important element in all kinds of metal structures and parts. It possesses such remarkable qualities as high ductility, strength, weldability, dimensional accuracy and good surface quality, which helped it to find application in the manufacture of complex metal structures. Steel thin-walled pipes are used to create lightweight structures that do not provide for a large load. Thin-walled pipes are welded and seamless. If in the manufacture of the construction the main requirement is high ductility, it is best to use an electric welded pipe. If high strength is required, then it will be more reliable to use a seamless pipe. In turn, seamless thin-walled pipes are divided into cold-formed and hot-formed. In cold-deformed pipes, the characteristics are higher than in the case of hot-deformed ones. They do not lose their qualities for a very long time. But hot deformed are cheaper. In the manufacture of thin-walled pipes, steel is used, including stainless steel. Quite often, to obtain improved strength indicators, combinations of steel of different grades are used. The use of thin-walled pipes Today, thin-walled pipes have become very popular both in industry and in everyday life. Due to the fact that they are very strong and reliable, they are very often used in the space and aviation industries. And when laying water and gas pipelines having low pressure, thin-walled pipes are indispensable. With the same diameter as standard steel pipes, thin-walled pipes have a much lower weight, they are more compact, and their resistance to environmental influences is the same.