铸钢阀门锤击手轮，阀座环，楔形闸板。
在许多与石油有关的采用铸钢阀门的应用领域，球墨铸铁表现同样优秀。
In many petroleum-related applications where steel valves are normally used, ductile iron valves perform equally well.
在阀门中，这种材料的最主要用途是，作为蝶阀的阀杆材料，和铸钢阀门的后阀座衬套和阀楔板。
The most common applications in valves are, for stem material in butterfly valves, and backseat bushings and wedges in cast steel valves.
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