INTERNATIONAL PATENT: NANJING DADE STEEL PIPE CO., LTD., 南京大得钢管有限公司 FILES APPLICATION FOR "CONCRETE-FILLED SPIRAL-CAVITY STEEL PIPE, PROCESSING DEVICE FOR CONCRETE FILLING, CONCRETE FILLING APPARATUS AND PROCESSING TECHNOLOGY FOR SPIRAL-CAVITY STEEL PIPE"

Posted On: 2026-04-27

GENEVA, April 27 -- NANJING DADE STEEL PIPE CO., LTD. (No.331, Zhening East Road, Lishui Economic Development ZoneNanjing, Jiangsu 211200), 南京大得钢管有限公司 (中国江苏省南京市溧水经济开发区柘宁东路331号) filed a patent application (PCT/CN2025/098742) for "CONCRETE-FILLED SPIRAL-CAVITY STEEL PIPE, PROCESSING DEVICE FOR CONCRETE FILLING, CONCRETE FILLING APPARATUS, AND PROCESSING TECHNOLOGY FOR SPIRAL-CAVITY STEEL PIPE" on Jun 03, 2025. With publication no. WO/2026/081494, the details related to the patent application was published on Apr 23, 2026.

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INTERNATIONAL PATENT: NANJING DADE STEEL PIPE CO., LTD., 南京大得钢管有限公司 FILES APPLICATION FOR "CONCRETE-FILLED SPIRAL-CAVITY STEEL PIPE, PROCESSING DEVICE FOR CONCRETE FILLING, CONCRETE FILLING APPARATUS AND PROCESSING TECHNOLOGY FOR SPIRAL-CAVITY STEEL PIPE"