兑水 发表于 2009-9-8 14:49:17

ASTM A 734-1987 经淬火和回火的合金钢与高强度低合金....

A734/A734M-87a(2003) Standard Specification for Pressure Vessel Plates, Alloy Steel and High-Strength Low-Alloy Steel, Quenched-and-Tempered
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