DIN 11851 union DN15-150 1"- 6" Material:AISI304,AISI304L,AISI316,AISI316L ,SS304, ... ,SMS,ISO,IDF,3A,etc casting stainless steel sanitary union DIN 11851 DIN union features:1) Material: stainless steel SS304, 304L, SS316 ... satisfied for customers' special requirements high quality and competitive price ss Sanitary Union DIN11851