1.ISO9001:2008,CE,TUV certified. 2.DN15-DN150,1/2"-6".AISI304, ... .DIN,SMS,ISO,IDF,AS,BS,BPE Standar Specifications1.ISO9001:2008,CE,TUV certified. 2.DN15-DN150,1/2"-6".AISI304 ... ,ISO,IDF,AS,BS,BPE Standard.Welded Concentric Reducer(ISO9001:2008,CE,TUV certified)1.Specification: DN10-DN150, 1/2"-6 ...