JUS B B8 020-1979 Foundry precoated sand Testing methods《铸造用覆膜砂的试验方法》.pdf

相关资源

JB T 8583-1997 铸造用覆膜砂.pdf

JB T 8583-2008 铸造用覆膜砂.pdf

JUS B B5 012-1978 Foundri precoated sand Kbsification and technicalrequterrunts 《铸造用覆膜砂的分类和技术要求》.pdf

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