齿轮对焊蝶阀Welded butterfly valve with Gear Handle
对焊蝶阀Welded butterfly valve
快装蝶阀Tri-clamp butterfly valve
气动对焊蝶阀 Pneumatic butterfly valve
三片式蝶阀 Flange butterfly valve
外螺纹蝶阀 Thread butterfly valve
卫生级不锈钢法兰蝶阀Sanitary Stainless Steel Flanged Butterfly Valve
卫生级不锈钢活接式蝶阀Sanitary Stainless Stell Uinon-type Butterfly Valve
