DIN EN 4700-002:2016 航空航天系列.钢和耐热合金.锻制产品.技术规范.第002部分:棒材和型材;德文和英文版本EN 4700-002-2016
Aerospace series - Steel and heat resisting alloys - Wrought products - Technical specification - Part 002: Bar and section; German and English version EN 4700-002:2016