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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 21832.2-2018 |
Welded austenitic-ferritic (duplex) stainless steel tubes and pipes—Part 2:Pipes for fluid transport 奥氏体-铁素体型双相不锈钢焊接钢管 第2部分：流体输送用管 |
China National Standards 2:Pipes |
 English PDF |
| GB/T 19473.2-2004 |
Polybutylene(PB) piping systems for hot and cold water installations--Part 2:Pipes 冷热水用聚丁烯(PB)管道系统 第2部分:管材 |
China National Standards 2:Pipes |
English PDF |
| GB/T 18742.2-2002 |
Polypropylene piping systems for hot and cold water installations--Part 2:Pipes 冷热水用聚丙烯管道系统 第2部分:管材 |
China National Standards 2:Pipes |
English PDF |
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