上(shang)海閥(fa)盛(sheng)閥(fa)門制造有限公司主要(yao)生產直(zhi)(zhi)通(tong)(tong)(tong)雙向(xiang)(xiang)(xiang)球閥(fa)，可提供直(zhi)(zhi)通(tong)(tong)(tong)雙向(xiang)(xiang)(xiang)球閥(fa)價格(ge)，直(zhi)(zhi)通(tong)(tong)(tong)雙向(xiang)(xiang)(xiang)球閥(fa)說(shuo)明書，直(zhi)(zhi)通(tong)(tong)(tong)雙向(xiang)(xiang)(xiang)球閥(fa)實物(wu)圖(tu)，直(zhi)(zhi)通(tong)(tong)(tong)雙向(xiang)(xiang)(xiang)球閥(fa)結(jie)構圖(tu)，直(zhi)(zhi)通(tong)(tong)(tong)雙向(xiang)(xiang)(xiang)球閥(fa)外形尺寸，直(zhi)(zhi)通(tong)(tong)(tong)雙向(xiang)(xiang)(xiang)球閥(fa)執行(xing)標準，直(zhi)(zhi)通(tong)(tong)(tong)雙向(xiang)(xiang)(xiang)球閥(fa)工作(zuo)原理，直(zhi)(zhi)通(tong)(tong)(tong)雙向(xiang)(xiang)(xiang)球閥(fa)作(zuo)用特點。

直通雙向球閥技術(shu)說明：