PSL2X52NL360N管线用无缝钢管X52NS管线管X42N管线钢管低温管线管

PSL2X52NL360N管线用无缝钢管X52NS管线管X42N管线钢管低温管线管

PSL2X52NL360N管线用无缝钢管X52NS管线管X42N管线钢管低温管线管

PSL2X52NL360N管线用无缝钢管X52NS管线管X42N管线钢管低温管线管

管线管L245N/BN管线管L360N管线管X52GB/T9711-2017管线管

L245N/L360M/X52N石油天然气管线管APl-5L无缝钢管GB9711螺旋管道

L245N L360N X52N无缝钢管X52 X56 X60 L390 L415 L485管线钢管

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X42 X52N石油管线管 材质L290N油田输油管线管 L360N无缝钢管

AS滑TMA划53GrB无 缝钢管 X42 X52 L835245N管线钢 内外光无痕