GB/T 19326-2003
Steel socket-weld, threaded and butt-weld branch outlets
钢制承插焊、螺纹和对焊支管座
📚 References & Relations / 引用与关联
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EN 10083-1
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GB/T 1220
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GB/T 1221
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GB/T 12459
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GB/T 12716
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GB/T 1591
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GB/T 3077
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GB/T 699
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ISO 4950
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JB 4726
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JB 4727
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JB 4728
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JB 4730