作废 CB/T 310-1999
船用内螺纹青铜直通止回阀 船用内螺纹青铜直通止回阀
发布日期:1999-06-01
实施日期:1999-06-01
分类信息
标准简介
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止回阀青铜直通船用内螺纹

最后更新时间 2025-08-30