1. Carbon structural steel
Q195 Q195F, Q195b, Q195 Q215 Q215AF, Q215Ab, Q215A, Q215BF, Q215Bb, Q215B

Q235 Q235AF, Q235Ab, Q235A, Q235BF, Q235Bb, Q235B, Q235C, Q235D

2.Low alloy high strength structural steel General low alloy high strength

Q295 Q295A, Q295B
Q345 Q345A, Q345B, Q345C, Q345D, Q345E
Q390 Q390A, Q390B, Q390C, Q390D, Q390E
Q420 Q420A, Q420B, Q420C, Q420D, Q420E
Q460 Q460C, Q460D, Q460E

3.High-quality carbon structural steels
08F, 10F, 15F, 08, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 75, 80

85, 15Mn, 20Mn, 25Mn 31, 30Mn, 35Mn, 40Mn, 45Mn, 50Mn, 60Mn, 65Mn, 70Mn

4. Free-cutting structural steel
Y12, Y12Pb, Y15, Y15Pb, Y20, Y30, Y35, Y40Mn, Y45Ca

5. Alloy structural steel
20Mn2, 30Mn2, 35Mn2, 40Mn2, 45Mn2, 50Mn2, 20MnV, 27MnSi, 35MnSi, 42MnSi

20SiMn 2Mo, 25SiMn2MoV, 37SiMn2MoV, 40B, 45B, 50B, 40MnB, 45MnB, 20MnMoB

15MnVB, 20MnV B, 40MnVB, 20MnTiB, 25MnTiBRE, 15Cr, 15CrA, 20Cr, 30Cr, 35Cr

40Cr, 45Cr, 50Cr, 38CrSi, 12CrMo, 15CrMo, 20CrMo, 30CrMo, 30CrMoA, 35CrMo,

42CrMo, 12CrMoV, 35CrMo V, 12Cr1MoV, 25Cr2MoVA, 25Cr2Mo1VA, 38CrMoAl,

40CrV 50CrVA, 15CrMn, 20CrMn, 40CrMn, 20CrMnSi, 25CrMnSi, 30CrMnSi, 30CrMnSiA

35CrMnSiA, 20CrMnMo, 40CrMnMo, 20CrMnTi, 40CrMnTi, 20CrNi, 40CrNi, 45CrNi, 50CrNi

12CrNi2, 12CrNi3, 20CrNi3, 30CrNi3, 37CrNi3, 12Cr2Ni4, 20Cr2Ni4, 77CrNiMo, 40CrNiMoA

18CrNiMnMoA, 45CrNi MoVA, 18Cr2Ni4WA, 25Cr2Ni4WA

6. Spring steel high-quality carbon spring steel
65, 70, 85

7. Alloy spring steel
65Mn, 55Si2Mn, 55Si2MnB, 55SiMnVB, 60Si2Mn, 60Si2MnA, 60 Su2CrA, 60Si2CrVA

55CrMnA, 60CrMnA, 60CrMnMoA, 50CrVA, 60CrMnBA, 30W4Cr2VA

8. Chromium bearing steel
GCr6, GCr9, GCr9SiMn, GCr15, GCr15SiMn, a total of 5 grades

9.The chrome-free bearing steel
GSiMnV, GSiMnVXt, GSiMnMoV, GSiMnMoVXt, GMnMoV, and GMnMoVXt.

10. Carburized bearing steel

G20CrMo, G20CrNiMo, G20CrNi2Mo, G20Cr2Ni4, G10CrNi3Mo, G20Cr2Mn2Mo, etc.