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��׼�� ASTM A514 / A514M - 05(2009) �ʺ��ں��ӵĸ��ǿ�ȴ��ӻػ�Ͻ�ְ�

Ӣ�� Standard Specification for High-Yield-Strength, Quenched and Tempered Alloy Steel Plate, Suitable for Welding

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