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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 19472.2-2017 |
Polyethylene structure-wall piping systems for underground usage—Part2: Polyethylene spirally enwound structure-wall pipes 埋地用聚乙烯（PE）结构壁管道系统 第2部分：聚乙烯缠绕结构壁管材 |
China National Standards usage—Part2: |
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