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20(#)gbt8163标准流体碳素无缝post time:2017-12-26
天津大无缝GB/T8163流体管post time:2014-07-01
20#GB/T8163国标内外壁热浸镀锌post time:2014-05-09
gbt81632018输送流体用无缝钢管post time:2014-08-20
上海宝钢无缝钢管post time:2014-05-08
20钢8163无缝管耐高温post time:2014-06-09
Q345D流体用无缝钢管post time:2014-07-01
8163输送流体用无缝管post time:2014-07-01
包钢碳钢大口径热轧厚壁流体输送用无缝钢管post time:2014-07-01