... mould ability 3.ISO9001:2008 The top ring : Production details list Product nameTop ringspecifications:1.5× φ200-φ146-80 Product materials1.Steel ... formatsPro/Engineer, Auto CAD(IGS,DXF,DWG,STP,STL and X-T), SolidWorks, Unigraphics, PDF,TIF etc Supplier Info Yixing ... various kinds of venturi, Top cage, the bottom, the split ring and related accessories, with steel, aluminum and stainless steel as ...