DIN EN 2157-3:1993-10 航天系列;鋼;鍛件和鍛件;技術(shù)規(guī)格;第 3 部分:預(yù)生產(chǎn)和生產(chǎn)鍛件
Aerospace series; steel; forging stock and forgings; technical specification; part 3: pre-production and production forgings; German version EN 2157-3:1993 / Note: Applies in conjunction with DIN EN 2157-1 (1993-10).