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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 37827-2019 |
Welded ball valve for urban heating 城镇供热用焊接球阀 |
China National Standards Welded ball valve |
 English PDF |
| GB/T 30818-2014 |
Fully welded body ball valves for pipeline transportation systems in petroleum and natural gas industries 石油和天然气工业管线输送系统用全焊接球阀 |
China National Standards Welded ball valve |
English PDF |
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