EN 10025-6-2019 熱軋結(jié)構(gòu)鋼 第 6 部分:調(diào)質(zhì)高強(qiáng)度結(jié)構(gòu)鋼板材交貨技術(shù)條件 Hot rolled products of structural steels-Part 6: Technical delivery conditions for flat products of high yield strength structural steels in the quenched and tempered condition