標(biāo)題: ASTM A 291-2005減速器小齒輪齒輪心軸用碳素鋼合金鋼鍛件 [打印本頁(yè)] 作者: 兌水 時(shí)間: 2009-9-6 07:37 標(biāo)題: ASTM A 291-2005減速器小齒輪齒輪心軸用碳素鋼合金鋼鍛件 A291-03 Standard Specification for Steel Forgings, Carbon and Alloy, for Pinions, Gears and Shafts for Reduction Gears