... price,on-time delivery Precision casting,machining, surface treatment ISO9001:2000 OEM service Pipe flangeNon ... water glass casting,sand casting, forging, surface treatment, hot treatment, CNC precision machining, Surface treatment: pickling, ... polish... Tools: advanced lathes and machining centers, all-pervasive CNC machine tools and more than 80 ... are fully appreciated. Pipe flange of OEM service