碳结元钢:45#(40--400)各30T 长钢碳结元钢:35#(150--220)各31T 长钢碳结元钢:20#(60--400)各10T 长钢碳结元钢:20#(100--250)各10T 长钢碳结元钢:10#(100--150)各10T 长钢