... :ASME/ANSI,B16.9,SH3409-96,SH3408-96 Material:321,304,304L,316L,347 Size:1/2"-48" Straight tee, excellent ... -tech company engaged in the research, development and manufacture of pipe fittings. With 20 years' history, our company owns advanced technology, financial ... , tees, reducers, lap joint stub ends,flange and pipe caps, using materials of 321, 304, 304L, 316, 316Ti, 316L, 347, 310S, 317L ...