... .Standards: DIN,3A,SMS,ISO,IDF, RJT 1.ISO9001:2008,CE,TUV certified. 2.DN15-DN150,1/2"-6".AISI304,AISI304L,AISI316 ... ,ISO,IDF,AS,BS,BPE Standard.Sanitary union (ISO9001:2000,CE,TUV certified) Specification: DN15-DN150,1/2"-6", smaller or larger ...