DIN EN 12020-1:2022-05
铝和铝合金 合金挤压精密型材 EN AW-6060 和 EN AW-6063 第1部分:检验和交货技术条件
Aluminium and aluminium alloys - Extruded precision profiles in alloys EN AW-6060 and EN AW-6063 - Part 1: Technical conditions for inspection and delivery; German version EN 12020-1:2022