日本/美國/德國優質碳素結構鋼板﹑棒材、角鋼、管材、H型鋼、方通等
①日本:S10C,S20C,S45C,S50C,SS330,SS34,SS400,SS41,SS490,SS50
②美國:1008,1010,1012,1015,1017,1020,1026,1029,1030,1035,1037,
1038,1040,1045,1050,1055,1060,1065,1070,1080。
③德國:1.0038,1.0301,1.1121,1.0401,1.1141,1.1140,1.0402,1.0501,1.0503,1.0535,1.0601,1.1151,1.1181,1.1180,1.1191,1.1201,1.1223,1.5038,1.8044。