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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB/T 51217-2017 |
technical specification for joint construction and sharing of transmission lines 通信传输线路共建共享技术规范 |
China National Standards Specification ring joint |
 English PDF |
| GB/T 27572-2011 |
Rubber seals - Joint rings for pipelines for hot-water supply up to 110℃ - Specification for the materials 橡胶密封件 110℃热水供应管道的管接口密封圈 材料规范 |
China National Standards Specification ring joint |
English PDF |
| GB/T 21873-2008 |
Rubber seals - Joint rings for water supply, drainage and sewerage pipelines - Specification for materials 橡胶密封件 给、排水管及污水管道用接口密封圈 材料规范 |
China National Standards Specification ring joint |
English PDF |
| GB/T 9130-2007 |
Specification of ring joint gaskets for pipe flange 钢制管法兰用金属环垫 技术条件 |
China National Standards Specification ring joint |
English PDF |
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