Yeah 316 stainless steel tube stainless steel mirror square tube Dongguan City Star Metal Materials Co., stainless steel tube, called a square tube, which is the side looks like a pipe. After treatment process is rolled strip made. Generally the strip after unpacking, smooth, curl, tube welding to form, and then rolled into the square tube by a tube and then cut into the desired length. Typically 50 per pack. Stainless steel tube is a hollow steel bar, so called because the square is a square-section tube. A large number of pipelines for transporting fluids such as oil, natural gas, water, gas, steam, etc. In addition, engaged in bending, torsional strength, lighter, so it is widely used in the manufacture of mechanical parts and engineering structures. Stainless steel tube categories: square tube of seamless and welded steel pipe (pipe joints) two categories. By the cross-sectional shape can be divided into square and rectangular tubes, round steel is widely used, but there are some semi-circular, hexagonal, equilateral triangle, octagon shaped steel tubing. 1. Analysis of the performance index of the pipe - is the metal material plastic plastic under load, the plastic deformation (permanent deformation) without damage ability. 2. Square tube performance index analysis - Hardness Hardness is a measure of the degree of hardness of metallic materials pointer. Hardness determination of the current production method is the most commonly used method is the indentation hardness, it is a geometric shape indenter under a load of material is pressed into the metal surface to be tested, according to the measured values ??of hardness are pressed into the extent. There Brinell hardness (HB), Rockwell hardness (HRA, HRB, HRC) and Vickers hardness (HV) and other methods commonly used method. Square tube size: 5 * 5 ~ 150 * 150 mm Thickness: 0.4 ~ 6.0 mm