ASTM A234/A234M-07 Standard Specification for Piping Fittings of Wrought Carbon
leunghb · 2009-12-12 15:56 · 47337 次点击
ASTMA234/A234M-07StandardSpecificationforPipingFittingsofWroughtCarbonSteelandAlloySteelforModerateandHighTemperatureService
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