20CrMo,20CrMoMSUP13 SUJ1 SUJ2 SUJ3 SUJ4 SUJ5
专业用钢和精品用钢
焊接结构用碳素钢和碳锰钢SM400A SM41A SM400B SM41B SM400C SM41C SM490A SM40A SM490B SM50B SM490C SM50C SM490YA SM50YA SM490YB SM50YB SM520YB SM53B SM520YC SM53C SM570 SM58
中,常 压力用碳素钢SGV410 SGV42 SGV450 SGV46 SGV480 SGV49 中,常 压力用