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ASTM A106 GrB高温无缝钢管post time:2022-03-23
管道材料 a106 Gr.Bpost time:2014-05-08
美标无缝管ASTM A106post time:2014-08-24
asme a106 gr.b无缝管post time:2014-07-03
a106 gr.b anti h2s抗硫post time:2014-07-03
astm a106 抗h2s抗硫化氢美标post time:2014-07-03
asme sa106b美标无缝钢管post time:2014-07-03
A106Gr.B,PE,ASME B36post time:2014-07-03
asme sa106b无缝管post time:2014-07-03