BS EN 12020-2:2001 pdf free.Aluminium and aluminium alloys -Extruded precision profiles in alloys EN AW-6060 and EN AW-6063—Tolerances on dimensions and form. BS EN 12020-2 This part of EN 12020 specifies tolerances on dimensions and form of extruded precision profiles, in alloys EN AW-6060 and EN AW- 6063 manufactured with and without a thermal barrier (see Figures 1 and 2)....