IT. QTY UNIT DESCR IPTION TUBE AND TUBE BUNDLE. Heat exch tubes 1 533 nos Fin tubes 25.4 MM OD x2.5MM min wall thickness x 4878MM long for coolers w1& w2 material according to ASTM B-111-443 admiralty brass as attached figure Note: 1-tube ends shall be prepared for rolling. 2-material of all bellow items shall be certificate be a well known independent-authority (alloy's or equivalent) and certificates to that effect shall be issued to O. R. A. 2 1974 nos Duplex tube as per niigata DWG. No. 19660-19.1mm O. D X 6000mm long. Out: 1.65mm thickness material ASTM 213 TP 304L. In: 1.0mm thickness material ASTM B-111-443. 联系方式Co:Alzanbaq Group Company Add:Baghdad, Baghdad, Al-Mansour Tel:964-7902-688623 Email:atheeralanni811@yahoo.com