標(biāo)題: ASTM A 911-2005 預(yù)應(yīng)力混凝土軌枕用無涂層的預(yù)應(yīng)力消除的鋼棒 [打印本頁] 作者: 兌水 時(shí)間: 2009-9-10 07:53 標(biāo)題: ASTM A 911-2005 預(yù)應(yīng)力混凝土軌枕用無涂層的預(yù)應(yīng)力消除的鋼棒 A911/A911M-02 Standard Specification for Uncoated, Stress-Relieved Steel Bars for Prestressed Concrete Ties