Aluminum Bar Standard:GB/T3191,ASTM B221,211,BS1474,ISO209, EN573,JISH4000 Grade:1,2,3,5, ... and extruded bar and rod by standard GB/T3191,ASTM B221,ASTM B211,BS1474, ISO209, EN573 and JISH4000 1.Standard:GB ... /T3191,ASTM B221,ASTM B211,BS1474, ISO209, EN573 and JISH4000 2.Grade: 1xxx ...