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316 430 304L tubi sanitari in acciaio inossidabile 3000 mm-6000 mm2023-12-28 11:01:40 |
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Acciaio al carbonio laminato a caldo SS400 Q235 St37 St52 ASTM A362023-12-28 16:24:20 |
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S220GD S250GD S280GD2023-12-28 18:37:35 |