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存档的ISO类别

BS EN ISO 15156石油和天然气工业用材料，用于石油和天然气生产中含H2s的环境第3部分抗裂CRAs(耐腐蚀合金)和其他合金

2007 ISO 6506 2005金属材料布氏硬度试验

BS EN ISO 4957工具钢

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