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EN 10250-2 S355J2G3 الارتباط الغريب2025-03-19 20:08:23 |
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Coupling Steel Power Transmission Shaft Forging 4340 4140 18CrNiMo7-6 43302025-06-13 14:02:52 |
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Mining machinery Open Die Forgings 18CrNiMo7-6 4340 20 CrMnMo big gear ring 12016-12-09 15:52:09 |