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ASTM A490M-09a Standard Specification for High-Strength Steel Bolts, Classes

  leunghb ·  2010-01-08 11:17  ·  44768 次点击
ASTMA490M-09aStandardSpecificationforHigh-StrengthSteelBolts,Classes10.9and10.9.3,forStructuralSteelJoints(Metric)
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标准手册, a490m, 09a, standard, specification, strength, steel, bolts, classes

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