China Steel butt-welding s GB Standards Search Result |
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GB/T 12459-2017 Steel buttwelding pipe fittings—Types and parameter 钢制对焊管件 类型与参数 - 中英文版 |
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GB/T 13401-2017 Steel buttwelding pipe fittings—Technical specification 钢制对焊管件 技术规范 - 中英文版 |
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GB/T 13401-2005 Steel plate butt-welding pipe fittings 钢板制对焊管件 - 中英文版 |
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GB/T 10752-2005 Marine steel butt-welding fittings 船用钢管对焊接头 - 中英文版 |
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GB/T 12459-2005 Steel butt-welding seamless pipe fittings 钢制对焊无缝管件 - 中英文版 |
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