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方管铁管110x110x6方管钢材180x100x8黑管方矩管120x200 150x250
空心方钢50x100x3异型管70x70x5黑铁方管75x75x6方形钢管90x90x4
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供q195冷拉方管30*80*1.5冷拔矩形管30x100x2光亮方矩管40*70*1.5
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冷拔扁钢10x30 25x35 18x50黑油方管75x75x2光亮方钢30x100 50x80
