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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 37594-2019 |
Technical specification for anti-UV three-layer external fusion powder coating corrosion protection for steel pipe 钢质管道抗紫外线三层熔结粉末防腐外涂层技术规范 |
China National Standards Specification external corrosion |
 English PDF |
| GB/T 21447-2018 |
Specifications for steel pipeline external corrosion control 钢质管道外腐蚀控制规范 |
China National Standards Specification external corrosion |
English PDF |
| GB/T 21447-2008 |
Specification for external corrosion control for steel pipeline 钢质管道外腐蚀控制规范 |
China National Standards Specification external corrosion |
English PDF |
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