进口优质碳素结构钢SS330 SS400 S20C S45C S50C 详细介绍：碳素结构钢: SS330 SS400 SS490 SS540 S09CK S10C S12C S15C S15CK S17C S20C S20CK S22C S25C S28C S30C S33C S35C S38C S40C S43C S45C S48C S50C S53C S55C S58C SM400A SM400B SM400C SM490A SM490B SM490C SM490YA SM490YB SM520YB SM520YC SM570 SPV315 SPV355 SPV410 SPV450 SPV490 SPV235 SGV410 SGV450 SGV480 SB410 SB450 SB480 SB450M SB480M SLA235A SLA235B SLA325A SLA325B SLA365 SLA410 STK290 STK400 STK490 STK500 STK540 耐候钢：SMA400AW SMA400BW SMA400CW SMA400AP SMA400BP SMA400CP SMA490AW SMA490BW SMA490CW SMA490AP SMA490BP SMA490CP SMA570W SMA570P SPA-H SPA-C 合金结构钢：SMn420 SMn433 SMn438 SMn443 SMnC420 SMnC443 SCr215 SCr415 SCr420 SCr430 SCr435 SCr440 SCr445 SCM415 SCM418 SCM420 SCM421 SCM425 SCM430 SCM432 SCM435 SCM440 SCM445 SCM822 SNC236 SNC415 SNC631 SNC815 SNC836 SNCM220 SNCM240 SNCM415 SNCM420 SNCM431 SNCM439 SNCM447 SNCM616 SNCM625 SNCM630 SNCM815 SACM645 冷镦钢：SWRCH6R SWRCH8R SWRCH10R SWRCH12R SWRCH15R SWRCH17R SWRCH6A SWRCH8A SWRCH12A SWRCH10A SWRCH15A SWRCH16A SWRCH18A SWRCH19A SWRCH20A SWRCH22A SWRCH25A SWRCH10K SWRCH12K SWRCH15K SWRCH16K SWRCH17K SWRCH18K SWRCH20K 易切削结构钢: SUM11 SUM12 SUM21 SUM22 SUM22L SUM23 SUM23L SUM24L SUM25 SUM31 SUM31L SUM32 SUM41 SUM42 SUM43 1912 1914 1922 1926 1940 1957 1973 130M15 212M36 214M15 216M44 210A15 210M15 214A15 280M01 弹簧钢：SUP6 SUP7 SUP9 SUP9A SUP10 SUP11A SUP12 SUP13 S50C-CSP S55C-CSP S60C-CSP S65C-CSP S70C-CSP SK85-CSP SK55-CSP SUP10-CSP