热加工工具钢
hot working tool steel
high temperature tool steel
45#优质碳素钢
High quality 45 # carbon steel
不锈钢-碳钢复合板
compound-plate of stainless steel and carbon steel
stainless steel-carbon steel clad sheet
超低碳钢带
ultra low carbon steel strip
超细碳素钢丝
superfine carbon steel wire
纯铁及碳素钢
Pure iron and carbon steel
大口径厚壁无缝碳素钢管
large diameter and thick wall thickness carbon steel pipe