全(quan)盤三通(tong)(tong)(tong) 全(quan)盤三通(tong)(tong)(tong) 這(zhe)材料在(zai)球墨鑄鐵管(guan)管(guan)件(jian)里面常(chang)用的(de),就是說3個接口都(dou)是法(fa)蘭(lan)盤的(de)三通(tong)(tong)(tong),同時(shi),還有單盤三通(tong)(tong)(tong),擦盤和承盤等帶法(fa)蘭(lan)盤的(de)管(guan)件(jian),PE和PPR管(guan)應該沒(mei)有這(zhe)樣的(de)管(guan)件(jian),但是可以自己利用管(guan)件(jian)制作。