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carbon steel bar
Round bar steel diameter 18-60mm,material 20#,45#,55#,40CrUP,40CrUC,40Mn2,20CrMnTi,42CrMo
Rolling tube blank diameter 50-130mm.material 20#,45#,10#,35#,37Mn5,Q345,20Mn2/30Mn2,45Mn2,27SiMn
Casting round tube blank diameter160-230mm,material 20#,45#,25Mn,Q345B,20Mn2/30Mn2,45Mn2,27SiMn,33Mn2V/36Mn2V,
Bearing steel diameter18-60mm,material GCr15,Flat spring steel material 60Si2Mn,55CrMnA,50CrVA
| Grade | Diameter(mm) | Standard | C | Si | Mn | P | S | Ni | Cu | Cr |
| 10 | 18-60 | GB/T | 0.07-0.13 | 0.17-0.37 | 0.35-0.65 | ≤0.035 | ≤0.035 | ≤0.30 | ≤0.25 | ≤0.15 |
| 20 | 0.17-0.23 | 0.17-0.37 | 0.35-0.65 | ≤0.035 | ≤0.035 | ≤0.30 | ≤0.25 | ≤0.25 |