ASTM A691/A691M-98(2007) Standard Specification for Carbon and Alloy Steel
leunghb · 2010-01-30 07:24 · 55665 次点击
ASTMA691/A691M-98(2007)StandardSpecificationforCarbonandAlloySteelPipe,Electric-Fusion-WeldedforHigh-PressureServiceatHighTemperatures
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