1.ISO9001:2008,CE,3A,TUV certified. 2.DN15-DN150,1/2"-6".AISI304,AISI304L,AISI316,AISI316L. 3.DIN,SMS,3A,ISO,IDF ... (ISO9001:2008,CE,3A,TUV certified)Specification: DN10-DN150, 1/2"-6", larger size can be customized Materials: SUS304, SUS316,SUS316LSurface treatment ... for Clamp Fittings are available in several different materials, Buna-N, EPDM, Teflon, and Viton. Lightweight and heavy-duty clamps ...