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球墨铸铁件在一些特殊场合下，其优良的性能已经超过了铸钢件，如汽车曲轴的抗疲劳、耐磨、减震、甚至强度等性能。然而将球墨铸铁应用于350个大气压的耐高压铸件——35MPa泥浆泵泵头，在国内甚至国外也很少见。35MPa泥浆泵是国内目前正在开发研制的一种高新技术产品，其最关键
Ductile iron parts in some special occasions, its excellent performance has exceeded the cast steel parts, such as automobile crankshaft fatigue resistance, wear resistance, shock absorption and even strength and other properties. However, the ductile iron applied to 350 atm high pressure casting - 35MPa mud pump head, even in foreign countries are rare. 35MPa mud pump is currently being developed a high-tech products, the most critical