... Steel 304,304L,316L,copper ; 2.Finish:mirror polishing; 3.Application:sanitary pipe fitting part; 1.Type: sanitary pipe fittings2.Material: 304,304L ... or hexagon typeA completed union was composed of nut,liner,male,seal ring. We also supply seperate parts such as ... : nut,liner,male,blind cap with chain,blind cap etc... 12 stainless steel copper pipe fitting for sanitary systems