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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 12459-2017 |
Steel buttwelding pipe fittings—Types and parameter 钢制对焊管件 类型与参数 |
China National Standards Steel buttwelding pipe |
 English PDF |
| GB/T 13401-2017 |
Steel buttwelding pipe fittings—Technical specification 钢制对焊管件 技术规范 |
China National Standards Steel buttwelding pipe |
English PDF |
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