DIN EN 1592-4:1997-12 Aluminium and aluminium alloys - HF seam welded tubes - Part 4: Tolerances on dimensions and form for square, rectangular and shaped tubes; German version EN 1592-4:1997
1997DIN EN 1592-4:1997-12 Aluminium and aluminium alloys - HF seam welded tubes - Part 4: Tolerances on dimensions and form for square, rectangular and shaped tubes; German version EN 1592-4:1997
1997DIN EN 1592-4:1997 Aluminium and aluminium alloys - HF seam welded tubes - Part 4: Tolerances on dimensions and form for square, rectangular and shaped tubes; German version EN 1592-4:1997