产品规格：
齐全
产品数量：
10000
包装说明：
外纤内膜
价格说明：
10
合金结构钢（structuralalloysteel），用作
机械零件和各种工程构件并含有一种或数种一定量的合金元素的钢。
合金结构钢：SMn420SMn433SMn438SMn443SMnC420SMnC443SCr415SCr420SCr430SCr435SCr440SCr445SCM415SCM418SCM420SCM421SCM425SCM430SCM432SCM435SCM440SCM445SCM822SNC236SNC415SNC631SNC815SNC836SNCM220SNCM240SNCM415SNCM420SNCM431SNCM439SNCM447SNCM616SNCM625SNCM630SNCM815SMn420HSMn433HSMn438HSMn443HSMnC420HSMnC443HSCr415HSCr420HSCr430HSCr435HSCr440HSCM415HSCM418HSCM420HSCM425HSCM435HSCM440HSCM445HSCM822HSNC415HSNC631HSNC815HSNCM220HSNCM240H
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