高温铸钢:ZGMn13-1 ZGMn13-2 ZGMn13-3 ZGMn13-4 ZGMn13-5 C40131 C40132 C40133 C40134 C40135 焊接结构用碳素钢:ZGH ZGH ZGH C22041 C22346 C22849 熔模铸造用碳素碳素铸钢:RRZG RZG RZG RZG RZG