Hand Wheel PN16 6 Inch 8 Inch 4 Inch Disk Cast Iron Body Flange Gate Valve

工厂定制304 316不锈钢闸阀母1/2英寸2英寸螺纹阀管道控制闸阀 Qw系列DN800MM毫米2.5英寸手动双向自密封闸阀 Hot Selling Factory Manufacture Gate Valve Ductile Iron Non Rising Stem Protective Flange Gate Valve ANSI碳钢/铸钢WCB法兰闸阀弹性阀座金属密封工业闸门闸阀 pvc闸阀 水闸闸阀 卡门闸阀 SFVA Ductile Iron Resilient Seat BS5163 PN16 PN10 PN25 GGG40 Dn50 Cheap Sluice Gate Valve Flanged China Foundry Manufacture Gate Valve Ductile Iron Non Rising Stem Resilient Seated Gate Valve 中国制造的用于水应用的黄铜蝶阀，内部外螺纹球结构手动控制 阀门 黄铜闸阀 电动闸阀 toyo闸阀 200PSI 300PSI NRS Resilient Mechanical Joint End Fire-fighting Gate Valve Ductile Iron Body DN50-DN300 10英寸上升阀杆型MSS SP-81球墨铸铁刀闸阀 Italy Type Copper Knife Gate Valve 1/2"inch-4"inch Brass Ball Valve 刀闸阀 滑动闸阀 气体阀门