关键词：直缝焊管；多丝埋孤焊；硬度；冲击韧性；统计学；评价 [gap=1510]Key words：longitudinal welded pipe；multi—wire SAW；hardness；impact toughness；statistics；evaluation
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hfw longitudinal welded pipe 高频直缝焊管
forming for longitudinal welded pipe 直缝焊管成型
large diameter longitudinal welded pipe 大直径直缝焊管
longitudinal welded pipe forming machine 直缝焊管成型机
longitudinal welded steel pipe 直缝焊接钢管
longitudinal seam welded pipe 直缝焊管
longitudinal seam submerged-arc welded pipe 直缝埋弧焊钢管
During the modern longitudinal seam welded pipe production, the contacting pressure distribution between the roller and pipe is a very important parameter.
在现代的直缝焊管生产中，轧辊与管坯间的接触压力分布是一个非常重要的参数。
This article discussed the residual stress of the HU-METAL method formed large diameter longitudinal seam welded steel pipe.
对HU - METAL法卷制成型大直径直缝焊钢管残余应力进行了分析讨论。
Residual stress of longitudinal submerged arc welded pipe after welding is the major reason caused welded pipe stress corrosion crack, its stress level directly decide pipeline safety in service.
直缝埋弧焊管焊后残余应力是导致焊管应力腐蚀裂纹产生的主要原因。
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