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/ 时间:2020-11-26 /
页数:12 /
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SYT,6423.6-2014,石油天然气工业,钢管无损检测方法,第6部分:无缝和焊接埋弧焊除外铁磁性钢管纵向和或横向缺欠的全周自动漏磁检测,6423.6,2014,石油天然气,工业,钢管,无损,检测