美标球阀主要部件材料编号名称碳钢不锈钢WCBLCBCF8CF8MCF3CF3M1阀体A216 WCBA352 LCBA351 CF8A351 CF8MA351 CF3A351 CF3M2阀盖螺母A194 2HA194 4A194 83阀盖螺栓A193 B7A320 L7A193 B84阀帽A216 WCBA352 LCBA351 CF8A351 CF8MA351 CF3A351 CF3M5垫片SS Spiral Wound/Graphite or SS Spiral Wound/PTFE6球体A105/Ep.Cr or F6A182 F6A351 CF8A351 CF8MA351 CF3A351 CF3M7阀座RPTFE or POM8小弹簧Stainless Steel9小球体A182 F304, A182 F316L10阀杆A182 F6A182 F6A182 F304A182 F316A182 F304LA182 F316L11阀杆座PTFE12阀杆填料Graphite or PTFE13压盖A182 F6A182 F304A182 F316A182 F304LA182 F316L14压盖螺栓A193 B7A193 B815压套A216 WCBA351 CF816支架盘Steel17手柄A216 WCB