U20852

Standards

• GB/T 699:2015Quality carbon structure steels
  • Chemical composition
  • Mechanical properties
  • Physical properties
• GB/T 699:1999Quality carbon structure steels
  • Chemical composition
  • Mechanical properties
• GB/T 1222:2007Spring steels
  • Chemical composition
  • Mechanical properties
• GB/T 3279:2009Hot-rolled spring steel sheets and plates
  • Chemical composition
  • Mechanical properties