性色A码一区二区三区天美传媒_广东少妇大战黑人34厘米视频_国产又爽又粗又猛的视频_黑人巨鞭大战中国妇女

PZ41TC手動(dong)(dong)陶(tao)瓷(ci)排(pai)渣(zha)閥是閘閥的一種(zhong)，包括高(gao)壓(ya)(ya)工程(cheng)陶(tao)瓷(ci)閘閥和(he)中低(di)壓(ya)(ya)工程(cheng)陶(tao)瓷(ci)閘閥。它(ta)的閥體采用碳(tan)鋼（WCB）材(cai)質，內(nei)襯采用ZTA工程(cheng)陶(tao)瓷(ci)。公(gong)稱(cheng)通徑一般為:DN50-DN400，中低(di)壓(ya)(ya)工程(cheng)陶(tao)瓷(ci)閘閥的公(gong)稱(cheng)壓(ya)(ya)力(li)一般為:PN1.0-PN6.4MPa,高(gao)壓(ya)(ya)工程(cheng)陶(tao)瓷(ci)閘閥的公(gong)稱(cheng)壓(ya)(ya)力(li)一般為:PN10.0-PN16.0MPa。主要(yao)適用于礦(kuang)料礦(kuang)漿和(he)灰渣(zha)漿液等介質。驅(qu)動(dong)(dong)方式多樣化(hua)，有電(dian)動(dong)(dong)，手動(dong)(dong)和(he)錐齒輪傳動(dong)(dong)。連接方式一般