According to the purpose: decorative tube, industrial tube, food hygiene tube, nuclear power tube, etc.; according to the external type: round tube, square tube, shaped tube, capillary, etc.; according to the composition: austenite, ferrite, double Phase steel, super double equal.
According to different fields, the materials required are not the same. For example, if you can use 201 places like decorative, there is no need to use 316L, the price difference is very large, and the nuclear power, chemical, food and other industries that require stricter conditions, Corrosion resistance and pressure resistance are required. If the composition is not suitable, it will be dangerous.