標題: ASTM A 795-2004 防火用黑色及熱浸鍍鋅的焊接和無縫鋼管 [打印本頁] 作者: 兌水 時間: 2009-9-9 08:34 標題: ASTM A 795-2004 防火用黑色及熱浸鍍鋅的焊接和無縫鋼管 A795/A795M-04 Standard Specification for Black and Hot-Dipped Zinc-Coated (Galvanized) Welded and Seamless Steel Pipe for Fire Protection Use