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Grau LR Sch40 sem emenda do cotovelo 90 do aço carbono de Asme B16.9 A234 Wpb2021-12-31 09:46:41 |
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T sem emenda Astm A234 GR Wpb do aço carbono de Backweld Sch 52022-04-28 14:09:07 |