Iron species Pig iron for steelmaking Iron number Brand Refining 04 Refine 08 Refine 10 　 Code L04 L08 L10 Chemical composition % Si ≤0.45 >0.45-0.85 >0.85-1.25 Mn A group ≤0.30 　 Two groups >0.30-0.50 Three groups >0.50 P First level ≤0.15 　 Secondary >0.15-0.25 Third level >0.25-0.40 S Special category ≤0.02 　 one type >0.02-0.03 Second class >0.03-0.05 Three types >0.05-0.07 Inflatable Boat,Inflatable Fishing Boat,Inflatable Rafting Boat,Inflatable Pontoon Fishing Boats Ningbo Haishu Hongkang Outdoor Industry & Trade Co., Ltd , https://www.hktrollingmotors.com                             Steelmaking raw iron (according to GB717-82) Â