Material requirement: 1  Galvalume, ASTM A 792, structural grade A37,AZM-150 coating, AFP,Regular spangle, coil weight: max 5 mt, coil ID 508 mm 2  Prepainted galvalume with protection film base matal, galnized, ASTM653 6 60 structural grade A37. Paint: top 5+20 microns RMP/Back 5 microns E...