317 stainless steel is mainly used in the manufacture of ships, chemical products and other chemical equipment requiring high corrosion resistance.

317L stainless steel is widely used in: oil and gas industry equipment;offshore platforms, heat exchangers, underwater equipment, fire fighting equipment;chemical processing industry, utensils and piping industry;desalination, high pressure RO equipment and subsea pipelines;energy industry such as power plant desulfurization and denitration FGD system, industrial washing system, absorption tower;mechanical parts (high strength, corrosion resistance, wear resistance parts)

317LMN stainless steel is designed for harsh operating environments such as flue gas desulfurization systems

201 stainless steel is austenitic stainless steel, 201 stainless steel With"acid"and "alkali resistance"and"high density", "no bubbles", "no pinhole polishing"etc.201 and 202 is used for to make "watch case", "watch band bottom with best quality"etc.It’s mostly used for make " tubes", This is the main usage of 201 grade.Also,used for building decoration.

309S austenitic stainless steel is mainly used in high temperature environment. Its high chromium content and nickel content ensure good corrosion resistance and oxidation resistance. Compared with austenite 304 alloy, it has a slightly higher strength at room temperature.

About 304L grade:304L is a versatile stainless steel, which is widely used in the manufacture of equipment and components requiring good comprehensive properties (corrosion resistance and formability).

About 304 grade:304 is a versatile stainless steel, which is widely used in the manufacture of equipment and components requiring good comprehensive properties (corrosion resistance and formability).