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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 31032-2014 |
Welding and acceptance standard for steel pipings and pipelines 钢质管道焊接及验收 |
China National Standards pipings |
 English PDF |
| GB/T 13663.2-2005 |
Polyethylene(PE)pipings systems for water supply Part 2:Fittings 给水用聚乙烯(PE)管道系统 第2部分:管件 |
China National Standards pipings |
English PDF |
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