1, 316 stainless steel due to the addition of Mo elements, so that its corrosion resistance, and high-temperature strength has been greatly improved, high temperature resistance can reach 1200-1300 degrees, can be used in harsh conditions. 316 stainless steel pipe is a hollow long round steel, mainly widely used in petroleum, chemical, medical, food, light industry, machinery, instrumentation and other industrial pipelines and mechanical structural components. Instrumentation and other industrial transportation pipeline and mechanical structure parts.
2, 346 stainless steel because of strong corrosion resistance, often used in the production of medical equipment or industrial equipment. 346 type is mostly used in the production of high-temperature corrosion-resistant products. Belong to the high quality material. 346 stainless steel said niobium stabilized austenitic stainless steel, niobium added to improve the resistance to intergranular corrosion, corrosion resistance in acid, alkali, salt and other corrosive media with the 321 stainless steel, weldability is good, can be used as corrosion-resistant materials and can be used as a heat-resistant steel.