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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 33791-2017 |
Technical specification for cathodic protection of steel well casings 钢质井套管阴极保护耐蚀作业技术规范 |
China National Standards Specification cathodic protection |
 English PDF |
| GB/T 21448-2017 |
Specification of cathodic protection for underground steel pipelines 埋地钢质管道阴极保护技术规范 |
China National Standards Specification cathodic protection |
English PDF |
| GB/T 33378-2016 |
Technical specification of cathodic protection 阴极保护技术条件 |
China National Standards Specification cathodic protection |
English PDF |
| GB/T 21448-2008 |
Specification of cathodic protection for underground steel pipelines 埋地钢质管道阴极保护技术规范 |
China National Standards Specification cathodic protection |
English PDF |
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