永川RISING STEM GATE VALVE 永川NON-RISING STEM GATE VALVE 永川RESILIENT SEATED GATE VALVE 永川AUTOMATIC COMPENSATION PARALLEL DOUBLE DISCS GATE VALVE 查看更多
永川RISING STEM GATE VALVE 永川NON-RISING STEM GATE VALVE 永川RESILIENT SEATED GATE VALVE 永川AUTOMATIC COMPENSATION PARALLEL DOUBLE DISCS GATE VALVE 查看更多