... 铸灰口铁 Casting, gray iron 灰口铁铸件 graycastings 高级灰口铁 highquality grey iron ; quality grey iron ...
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Our high quality grey iron includes copper to increase thermal conductivity and wear properties.
我们的高品质灰铁包括铜，以提高热导率和磨损性能。
It is difficult to warrant the quality of glow-ion nitriding to grey cast iron and ductile cast iron. The basic reason is that the iron can't be washed clearly before nitriding.
灰口铸铁、球墨铸铁的辉光离子氮化质量较难保证，其根本原因在于氮化前工件清洗不当。
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