... "-6".AISI304,AISI304L,AISI316,AISI316L. 3.DIN,SMS,ISO,IDF,AS Pipe fitting:SPECIFICATIONS:1.ISO9001:2008,CE,TUV certified. 2 ... ".AISI304,AISI304L,AISI316,AISI316L. 3.DIN,SMS,ISO,IDF,AS,BS,BPE Standard. BRIEF INTRODUCTION: Pipe Fittings(ISO9001:2008,CE,TUV certified ...