Comprehensive classification of steel products
1 Ordinary steel: a. Carbon structural steel: (a) Q195; (b) Q215 (A, B); (c) Q235 (A, B, C); (d) Q255 (A, B); (e ) Q275. b. Low alloy structural steel. c. Ordinary structural steel for specific purposes.
High-quality steel (including high-grade high-quality steel) a. Structural steel: (a) high-quality carbon structural steel; (b) alloy structural steel; (c) spring steel; (d) easy-cut steel; (e) bearing steel; (f) )High-quality structural steel for specific purposes. b. Tool steel: (a) carbon tool steel; (b) alloy tool steel; (c) high-speed tool steel.
Special performance steel: (a) Stainless acid-resistant steel; (b) Heat-resistant steel; (c) Electric heating alloy steel; (d) Electrical steel; (e) High manganese wear-resistant steel.
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