ASTM A500/A500M-09 Standard Specification for Cold-Formed Welded and Seamless
leunghb · 2010-01-08 14:53 · 49499 次点击
ASTMA500/A500M-09StandardSpecificationforCold-FormedWeldedandSeamlessCarbonSteelStructuralTubinginRoundsandShapes
[attach]39872[/attach]