標(biāo)題: ASTM A 847-2005 具有增強(qiáng)耐大氣腐蝕性能的冷成型焊接與無縫.... [打印本頁] 作者: 兌水 時間: 2009-9-9 10:41 標(biāo)題: ASTM A 847-2005 具有增強(qiáng)耐大氣腐蝕性能的冷成型焊接與無縫.... A847-99a(2003) Standard Specification for Cold-Formed Welded and Seamless High Strength, Low Alloy Structural Tubing with Improved Atmospheric Corrosion Resistance