The most commonly used stainless steel are the following: Model 301 - scalability for molding products. It can also be rapidly hardened by mechanical processing. Good weldability. Abrasion resistance and fatigue strength than 304 stainless steel. 302 Model 304 with corrosion resistance, due to relatively high carbon intensity and therefore better. Model 303 - by adding a small amount of sulfur and phosphorus to more than 304 cutting. Model 304- general model; that is 18/8 stainless steel. GB grades 0Cr18Ni9. Model 309 - 304 - better temperature resistance. Model 316 - After 304, the second most widely used of steel, mainly used in the food industry and surgical equipment, add molybdenum to obtain a special corrosion-resistant structure. Than the 304 because it has better resistance to chloride corrosion and thus as "marine steel" to use. SS316 is often used to fuel recovery. 18/10 grade stainless steel is usually in line with the application level Model 321 in addition to the added titanium elements to reduce the risk of material other than the corrosion of the weld performance similar to 304. Laser welding machine is a kind of the focused laser beam as an energy source, focused onto the workpiece to be welded to the metal, since the laser having an optical refraction properties, focus, etc., so that the laser welding is very suitable for micro parts and poor accessibility of the site welding. Laser welding also has a low heat input, low distortion, from electromagnetic influence, simple operation, stable, good weld results. High welding efficiency, simple operation, can be automated welding, suitable for welding of stainless steel materials, the plane straight, circular and arbitrary trajectories. After the appearance of fine welding, the weld is not black, the product is not deformed, combined with higher merit!