Special-shaped pipes are generally distinguished according to the broken section, and can be divided into seamless steel pipe special-shaped pipes, aluminum alloy special-shaped pipes, and plastic special-shaped pipes according to the material. The following mainly introduces the special-shaped steel pipe. Stainless steel special-shaped steel pipe is a general term for steel pipes with other cross-sectional shapes other than round pipes, including welded special-shaped pipes and seamless special-shaped pipes. Because of the material, the stainless steel special-shaped pipe is generally more than 304 material, and the material of 200 and 201 has strong hardness, which makes it more difficult to form.
