20CrNiMoA/SAE8620H圆钢宝钢/兴澄产
42CrMo/42CrMoA..
25Cr2MoVA圆钢西宁/..
30CrMo/30CrMoA..
38CrMoAl/38CrM..
20CrNiMoA/SAE8..