兑水 发表于 2009-9-8 14:06:11

ASTM A 709-2006 桥梁用结构钢

A709/A709M-04 Standard Specification for Carbon and High-Strength Low-Alloy Structural Steel Shapes, Plates, and Bars and Quenched-and-Tempered Alloy Structural Steel Plates for Bridges
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