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Naadloos Super Duplex de Pijpt-stuk van ASME B16.9 ASTM A815 2507/UNS S327502021-12-21 14:34:39 |
ASTM A312 TP316L 1,4404 Roestvrij staalpijp Marine Application سلس2024-02-19 17:09:11 |