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JIS B2312 Tubo de solda a manteiga de 90 graus2024-03-15 10:22:29 |
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ASME B16.9 ASME A234 WPB SMLS LR 90 graus2024-04-02 11:12:20 |
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DN250 de solda ASTM A234 WPB redutor de 50mm a de 40mm2021-07-30 15:42:38 |