ANSI Lug Wafer Type Check Valve 美标凸耳对夹式止回阀
面议ANSI Lug Wafer Type Check Valve 美标凸耳对夹式止回阀
面议ANSI Flanged Wafer Type Check Valve 美标法兰对夹式止回阀
面议Wafer Connection Type Tripple Offset Metal Butterfly Valve 对夹式三偏心金属蝶阀
面议High Performance Stainless Steel Wafer Type Butterfly Valve 高性能不锈钢片式蝶阀
面议High Performance Resilient Seat Wafer Type Butterfly Valve 高性能弹性阀座蝶阀
面议Wafer Type Butterfly Valve 对夹式蝶阀
面议Wafer Duo Check Valves 对夹式止回阀
面议