主要零部件 材质 适用规格 阀体 球墨铸铁 50mm-1200mm 灰铁体 50mm-1000mm 铸钢 50mm-300mm 不锈钢 50mm-300mm 阀瓣 不锈钢CF8/CF8M 50mm-600mm 球墨铸铁镀镍磷 50mm-600mm 球墨铸铁覆尼龙 50mm-1200mm 球墨铸铁覆改性陶瓷 50mm-1200mm 球墨铸铁硫化橡胶 50mm-600mm 哈氏合金 50mm-1200mm 316L 50mm-1200mm 双向不锈钢 50mm-1200mm 阀杆 416/316/304 50mm-1200mm 碳钢镀镍磷 50mm-1200mm 沉淀硬化不锈钢17-4PH 50mm-1200mm 密封圈 丁腈橡胶NBR 50mm-1200mm 三元乙丙橡胶EPDM 50mm-1200mm 氟橡胶VITON 50mm-1200mm 硅橡胶SEP 50mm-1200mm 耐热EPDM 50mm-1200mm 耐磨EPDM 50mm-1200mm 聚四氟乙烯PTFE 50mm-600mm