SS321 SS310S 304 Seamless Stainless Steel Pipe SS309S Cold Rolled

SS321 SS310S Stainless Steel 304 Seamless Pipe SS309S

Commonly used grades of cold-rolled stainless steel pipes include:

Austenitic Steel (Mainstream):

304 (0Cr18Ni9): General purpose, used in general corrosive environments and food contact.

304L (00Cr19Ni10): Ultra-low carbon, excellent resistance to intergranular corrosion, used in heavily corrosive environments where post-weld annealing is not possible.

316 (0Cr17Ni12Mo2): Added molybdenum, improved resistance to pitting corrosion and seawater.

316L (00Cr17Ni14Mo2): Ultra-low carbon version of 316, with the best overall corrosion resistance.

321 (1Cr18Ni9Ti): Added titanium, improving resistance to intergranular corrosion and high temperature resistance.

Duplex Steel:

2205 (S32205): Combines the advantages of austenitic and ferritic steels, high strength, excellent resistance to chloride stress corrosion, used in harsh environments (such as seawater and chemical industries). Special high-performance steels:

904L, 254SMO: High molybdenum content, used for highly corrosive media (such as sulfuric acid and phosphoric acid).