... DIN,SMS,3A,ISO,IDF,AS,BS,BPE . High Pressure Clamp(ISO9001:2008,CE,3A,TUV certified)Specification: ... BPECertificate: ISO 9001, 3A ,TUV, CEPolishing: Inner surface mechanical polished Ra less than 0.4 - 0.8 ... μm, outer surface glass polished Ra less than 0.8μm. ... 5.Drawings (for customized design).6.Polish requirements( surface accuracy)As a professional manufacturer, we can offer all ...