semi-malleable cast iron

例句：

1. 1.This type of steel is often used in construction due to its semi-malleable nature.
   由于其半可锻性，这种钢常用于建筑。
2. 2. The engineer designed the machine with a focus on its semi-malleable cast iron components.
   工程师设计机器时，重点考虑了其半可锻铸铁部件。
3. 3. The company uses this material in its production lines due to its semi-malleable cast iron properties.
   该公司因其半可锻铸铁属性而使用这种材料在其生产线上。