EN 10297-1 خواص مکانیکی
In accordance with the classification system in EN 10020, the steel grades listed in Tables 1, 2, 3 and 4 are stainless steels. 5.2 Designation For tubes covered by this document the steel designation consists of: number of this document (EN 10297-2); plus either: steel name in accordance with EN 10027-1 and CR 10260;