应有尽有
常备现货
60Si2Mn 20-100
50CrV 20-100
SAE8620H 10-280
40Mn2 60-180
CM490 20-300
CM690 10-280
20MnCr5H 20-220
27SiMn 30-380
30CrMnTi 25-170
35CrMnSia 65-210