东海fyh126 发表于 2019-5-24 21:58 9 C8 E8 X' j* y' E7 b* {5 G9 C; SHT15-33吗?,,,还是HT20-40,,,,,HT20-40铸铁的化学成分范围为:C3.3-3.5%、Si1.5-2.0%、Mn0.5-0.8% ...