排水用灰鑄鐵管及管件是一種柔性接口的直管及管件，主要用于排放污水，其公稱口徑范圍為50～200mm。


排(pai)水用(yong)柔性接口灰鑄鐵(tie)管(guan)(guan)(guan)及管(guan)(guan)(guan)件，按其接口型(xing)(xing)(xing)式(shi)可分(fen)為A型(xing)(xing)(xing)直(zhi)管(guan)(guan)(guan)及管(guan)(guan)(guan)件和W型(xing)(xing)(xing)無承(cheng)口（管(guan)(guan)(guan)箍式(shi)）接口兩(liang)種。對于W型(xing)(xing)(xing)管(guan)(guan)(guan)件，按其壁厚又可分(fen)為TA級(ji)和TB級(ji)兩(liang)級(ji)。