zhangyongwen 发表于 2008-5-23 14:56:46

BS EN10083-3-1996 Quenched and tempered steels

BS EN10083-3-1996 Quenched and tempered steels —Part 3: Technical delivery conditions for boron steels

[ 本帖最后由 tdragonfu 于 2008-6-18 17:52 编辑 ]
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