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ASTM de U-bochtbuis van TP321H TP321 SA213 ASME A213 TP347H 3/4“2023-06-08 14:17:20 |
ASTM B444 UNS N06625, Inconel625 Gr.2 Nikkellegering naadloze U-buigbuis2024-02-26 11:30:54 |