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无缝钢管典型内折叠缺陷分析
宫志民,梁建山,田青超
Causes analysis of typical interior folding defect of seamless steel tube
GONG Zhi-min, LIANG Jian-shan, TIAN Qing-chao
. 2014, (6): 31 -33 .  DOI: 10.13228/j.boyuan.issn1003-9996.20140049