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在对5万m~3双盘外浮顶贮罐的SPV50Q钢壁板自动焊后产生的横向纹痕作出判定的基础上,探讨了这种缺陷的成因,并进行了安全评定。
On the basis of the judgment of the transverse grain marks produced after the automatic welding of the SPV50Q steel siding with 50 000 m 3 double-disc floating roof tanks, the causes of such defects were discussed and the safety assessment was carried out.