INTERNATIONAL PATENT: BAOSHAN IRON & STEEL CO., LTD., 宝山钢铁股份有限公司 FILES APPLICATION FOR "THICK-WALLED HIGH-TOUGHNESS LOW-YIELD-RATIO STEEL FOR PETROLEUM CASING PIPE, PETROLEUM CASINGPIPE AND MANUFACTURING METHOD FOR PETROLEUM CASING PIPE"

GENEVA, April 5 -- BAOSHAN IRON & STEEL CO., LTD. (885 Fujin RoadBaoshan District, Shanghai 201900), 宝山钢铁股份有限公司 (中国上海市宝山区富锦路885号) filed a patent application (PCT/CN2025/124425) for "THICK-WALLED HIGH-TOUGHNESS LOW-YIELD-RATIO STEEL FOR PETROLEUM CASING PIPE, PETROLEUM CASINGPIPE, AND MANUFACTURING METHOD FOR PETROLEUM CASING PIPE" on Sep 26, 2025. With publication no. WO/2026/067634, the details related to the patent application was published on Apr 02, 2026.

Notably, the patent application was submitted under the International Patent Classification (IPC) system, which is managed by the W...