CN202132619U - 一种预应力钢筋混凝土井壁管 - Google Patents
一种预应力钢筋混凝土井壁管 Download PDFInfo
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- CN202132619U CN202132619U CN201120229648U CN201120229648U CN202132619U CN 202132619 U CN202132619 U CN 202132619U CN 201120229648 U CN201120229648 U CN 201120229648U CN 201120229648 U CN201120229648 U CN 201120229648U CN 202132619 U CN202132619 U CN 202132619U
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CN201120229648U CN202132619U (zh) | 2011-06-30 | 2011-06-30 | 一种预应力钢筋混凝土井壁管 |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104075041A (zh) * | 2014-01-10 | 2014-10-01 | 伦慧东 | 预应力强化复合钢管的成型工艺 |
CN107100615A (zh) * | 2017-03-21 | 2017-08-29 | 中国矿业大学 | 一种径向预应力钻井井壁结构及其施工方法 |
CN113202985A (zh) * | 2021-04-08 | 2021-08-03 | 中国长江三峡集团有限公司 | 一种双钢筒预应力混凝土管及生产方法 |
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2011
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104075041A (zh) * | 2014-01-10 | 2014-10-01 | 伦慧东 | 预应力强化复合钢管的成型工艺 |
CN104075041B (zh) * | 2014-01-10 | 2016-03-23 | 伦慧东 | 预应力强化复合钢管的成型工艺 |
CN107100615A (zh) * | 2017-03-21 | 2017-08-29 | 中国矿业大学 | 一种径向预应力钻井井壁结构及其施工方法 |
CN113202985A (zh) * | 2021-04-08 | 2021-08-03 | 中国长江三峡集团有限公司 | 一种双钢筒预应力混凝土管及生产方法 |
CN113202985B (zh) * | 2021-04-08 | 2022-10-04 | 中国长江三峡集团有限公司 | 一种双钢筒预应力混凝土管及生产方法 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C56 | Change in the name or address of the patentee |
Owner name: TIANJIN SILVERY DRAGON PC PRODUCTS CO., LTD. Free format text: FORMER NAME: SILVERY DRAGON PC STEEL PRODUCTS GROUP CO., LTD. |
|
CP01 | Change in the name or title of a patent holder |
Address after: 300400 Tianjin City, Beichen economic and Technological Development Zone Industrial Park Road No. 62 dual Shuangjiang Patentee after: Tianjin Silvery Dragon Prestressed Materials Co., Ltd. Address before: 300400 Tianjin City, Beichen economic and Technological Development Zone Industrial Park Road No. 62 dual Shuangjiang Patentee before: Silvery Dragon PC Steel Products Group Co., Ltd. Tianjin |
|
CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120201 Termination date: 20160630 |