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GB/T 31032-2023 Steel pipeline welding and acceptance 钢质管道焊接及验收 - 中英文版 |
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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 31936-2015 Rolls for welding steel pipe 焊接钢管轧辊 - 中英文版 |
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GB/T 31032-2014 Welding and acceptance standard for steel pipings and pipelines 钢质管道焊接及验收 - 中英文版 |
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GB/T 9119-2010 Slip-on-welding plate steel pipe flanges 板式平焊钢制管法兰 - 中英文版 |
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GB/T 9118-2010 Loose hubbed steel pipe flanges with welding neck collor 对焊环带颈松套钢制管法兰 - 中英文版 |
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GB/T 9117-2010 Hubbed socket welding steel pipe flanges 带颈承插焊钢制管法兰 - 中英文版 |
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GB/T 9116-2010 Hubbed slip-on-welding steel pipe flanges 带颈平焊钢制管法兰 - 中英文版 |
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GB/T 9115-2010 Steel pipe welding neck flanges 对焊钢制管法兰 - 中英文版 |
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GB/T 15530.6-2008 Loose plate flange in steel with a copper pipe or a weld-neck collar in copper alloy for welding 铜管折边和铜合金对焊环松套钢法兰 - 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 12459-2005 Steel butt-welding seamless pipe fittings 钢制对焊无缝管件 - 中英文版 |
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