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ASTM B111/ASME SB111 C71500 Tubo in lega di rame e nichel senza saldatura2024-12-06 17:00:33 |
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ASTM B151 C70600 Cu-Ni 90/10 Flange forgiate nichel rame Flangia WN RF2025-08-13 17:37:41 |