碳素结构钢日本:SS300 SS34 SPHC SPHD SS400 SM41A SS41
SM400A SM400B SS41B SS490 SS50 SO9CK S9CK SPHE S15CK
S09CK SPEH S10C S12C S15C S17C S15CK S20C S22C S20CK
S25C S28C S30C S33C S35C S38C S40C S43C S45C S48C S50C
S53C S55C S58C
碳素结构钢:优质碳素结构钢、普通碳素结构钢、碳素结构钢钢板、优质
碳素结构钢线材、优质碳素结构钢规格 |