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| Chinese National Standard Category: Steel tube and cast iron pipe |
| English Title: | Ductile iron pipes, fittings and accessories—External zinc-based coating—Part 1：Metallic zinc and zinc alloy with finishing layer |
| Chinese Title: | 球墨铸铁管、管件和附件 外表面锌基涂层 第1部分：带终饰层的金属锌及锌合金涂层 |
| Standard No.: | GB/T 17456.1-2025 |
| Category No.: | H48 |
| Issued by: | SAMR; SAC |
| Issued on: | 2025-8-29 |
| Implemented on: | 2026-3-1 |
| Status: | valid |
| Superseded by: | |
| Superseded on: | |
| Abolished on: | |
| Superseding: | GB/T 17456.1-2009 Ductile iron pipes—External zinc-based coating—Part 1:Metallic zinc with finishing layer |
| Word Count: | 9000 words |
| Similar Standards: |
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