Which is good, stainless steel or titanium tubes?
Stainless steel pipe is a hollow long steel strip, is widely used for channels of transporting fluids such as oil, gas, water, gas, steam, etc. In addition, as the same of bending, torsional strength, its weight is lighter, so it is widely used for manufacturing mechanical parts and engineering structures. Also used for producing all kinds of conventional weapons, the barrel, shells and so on.
 Classification: steel pipes has two categories, such as seamless steel pipe and welded steel pipe (pipe joints). By cross-section shape can be divided into round tube and shaped tubes, round steel is widely used, but there are some square, rectangular, semi-circular, hexagon, equilateral triangle, octagon and other special-shaped pipe.
For the steel pipe to withstand fluid pressure should be carried out to test the pressure of hydraulic capacity and quality. It is qualified if under the pressure of provisions it is not leak or wet or expansion. According to the requirements of the standard demand, some steel also need side test, curling test , flaring test, flattening tests, etc.
Commercially pure titanium: titanium impurities in industrial pure titanium is more than chemical pure titanium , so it has higher strength and hardness, the mechanical properties and chemical properties of it are similar to stainless steel, strength of it is better than titanium alloy, the antioxidant property of it is superior than austenitic stainless steel, but the heat resistance is poorer. TA1, TA2, TA3 increased impurity content in turn, mechanical strength and hardness were enhanced in turn, but the plastic toughness were descending.
β-type Ti: β-type titanium alloy could be strengthened by heat treatment, it has high alloy strength, weldability, pressure processing, but the performance is not stable and the melting process is complicated.