日本少妇高潮喷水XXXXXXX_GOGO亚洲肉体艺术欣赏图片_丰满人妻一区二区三区免费视频_久久久久无码精品国产不卡

ZPG自動反沖洗排(pai)污過濾器產品類別，具體分為直通(tong)式(shi)(shi)與角(jiao)通(tong)式(shi)(shi)。L表(biao)(biao)示(shi)(shi)角(jiao)通(tong)式(shi)(shi)，I表(biao)(biao)示(shi)(shi)直通(tong)式(shi)(shi)。ZPGL-DN*。ZPGL表(biao)(biao)示(shi)(shi)ZPGL型角(jiao)通(tong)式(shi)(shi)，DN表(biao)(biao)示(shi)(shi)品徑(jing)(jing)，管路內徑(jing)(jing)，產品內徑(jing)(jing)。通(tong)常(chang)對應的管道外(wai)(wai)徑(jing)(jing)是比內徑(jing)(jing)表(biao)(biao)明的數字(zi)大。舉(ju)例：ZPGL-DN50，對應管是57，57管子的外(wai)(wai)徑(jing)(jing)。常(chang)用規格口徑(jing)(jing)DN40-DN1200。