CN100478598C - 带金属加强筋的聚乙烯缠绕结构壁管材及其制造方法 - Google Patents
带金属加强筋的聚乙烯缠绕结构壁管材及其制造方法 Download PDFInfo
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- CN100478598C CN100478598C CNB2007100426038A CN200710042603A CN100478598C CN 100478598 C CN100478598 C CN 100478598C CN B2007100426038 A CNB2007100426038 A CN B2007100426038A CN 200710042603 A CN200710042603 A CN 200710042603A CN 100478598 C CN100478598 C CN 100478598C
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CNB2007100426038A CN100478598C (zh) | 2007-06-25 | 2007-06-25 | 带金属加强筋的聚乙烯缠绕结构壁管材及其制造方法 |
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CNB2007100426038A CN100478598C (zh) | 2007-06-25 | 2007-06-25 | 带金属加强筋的聚乙烯缠绕结构壁管材及其制造方法 |
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CN101131220A CN101131220A (zh) | 2008-02-27 |
CN100478598C true CN100478598C (zh) | 2009-04-15 |
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CNB2007100426038A Active CN100478598C (zh) | 2007-06-25 | 2007-06-25 | 带金属加强筋的聚乙烯缠绕结构壁管材及其制造方法 |
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CN103990656A (zh) * | 2014-05-23 | 2014-08-20 | 李长城 | 一种用于带加强筋的碳钢螺旋焊管的焊接设备 |
CN105318116B (zh) * | 2015-10-23 | 2018-08-31 | 广东永高塑业发展有限公司 | 一种覆塑带增强中空壁缠绕管及其制造方法 |
CN114658930B (zh) * | 2022-04-06 | 2023-11-07 | 安庆市悦发管业有限公司 | 一种双层多点支撑高强度hdpe缠绕管 |
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Owner name: STATE GRID SHANGHAI ELECTRIC POWER COMPANY Free format text: FORMER OWNER: SHANGHAI QINGYUAN PIPE TECHNOLOGY CO., LTD. Effective date: 20141217 Owner name: SHANGHAI QINGYUAN PIPE TECHNOLOGY CO., LTD. Effective date: 20141217 |
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Free format text: CORRECT: ADDRESS; FROM: 201502 JINSHAN, SHANGHAI TO: 200002 HUANGPU, SHANGHAI |
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Effective date of registration: 20141217 Address after: 200002 Nanjing East Road, Shanghai, No. 181, No. Patentee after: State Grid Shanghai Municipal Electric Power Company Patentee after: Shanghai Qingyuan Pipe Technology Co., Ltd. Address before: 201502 Shanghai city Jinshan District Fengjing Industrial Park No. 35 Cao Lilu Patentee before: Shanghai Qingyuan Pipe Technology Co., Ltd. |