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BS EN 10028-3-2009 Flat products made of steels for pressure purposes. Weldable fine grain steels, normalized! p6 d ?2 [2 `5 E# Q, X http://www.3dportal.cn/discuz/viewthread.php?tid=934778" i2 K3 X8 z* _8 T- U P9 U' z
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发表于 2011-10-28 14:44:18