... ,AISI316L. 3.DIN,SMS,3A,ISO,IDF,AS,BS,BPE . High Pressure Clamp(ISO9001:2008,CE,3A,TUV certified)Specification: DN10-DN150 ... ,IDF,RJT,AS,BS,BPECertificate: ISO 9001, 3A ,TUV, CEPolishing: Inner surface mechanical polished Ra less than 0.4 - 0.8 ...