上海閥盛閥門制造有(you)限公(gong)司(si)主要生(sheng)產(chan)直(zhi)(zhi)(zhi)(zhi)通(tong)(tong)(tong)(tong)(tong)雙(shuang)向(xiang)(xiang)球(qiu)閥，可提供直(zhi)(zhi)(zhi)(zhi)通(tong)(tong)(tong)(tong)(tong)雙(shuang)向(xiang)(xiang)球(qiu)閥價格，直(zhi)(zhi)(zhi)(zhi)通(tong)(tong)(tong)(tong)(tong)雙(shuang)向(xiang)(xiang)球(qiu)閥說明書(shu)，直(zhi)(zhi)(zhi)(zhi)通(tong)(tong)(tong)(tong)(tong)雙(shuang)向(xiang)(xiang)球(qiu)閥實物圖，直(zhi)(zhi)(zhi)(zhi)通(tong)(tong)(tong)(tong)(tong)雙(shuang)向(xiang)(xiang)球(qiu)閥結(jie)構圖，直(zhi)(zhi)(zhi)(zhi)通(tong)(tong)(tong)(tong)(tong)雙(shuang)向(xiang)(xiang)球(qiu)閥外形尺寸，直(zhi)(zhi)(zhi)(zhi)通(tong)(tong)(tong)(tong)(tong)雙(shuang)向(xiang)(xiang)球(qiu)閥執行標準，直(zhi)(zhi)(zhi)(zhi)通(tong)(tong)(tong)(tong)(tong)雙(shuang)向(xiang)(xiang)球(qiu)閥工作原理，直(zhi)(zhi)(zhi)(zhi)通(tong)(tong)(tong)(tong)(tong)雙(shuang)向(xiang)(xiang)球(qiu)閥作用特點。

直通雙向球閥技術(shu)說(shuo)明：