Original document(7 pages)  中文版
    A technology for manufacturing the L80-13Cr sleeve pipe used to deliver oil includes such steps as heating pipe blank by radiation pipe, hot rolling, cooling, quenching in air under the protection of N2, tempering, cooling in air, straightening, cutting for removing head and tail and dividing the pipe into pipe segments, and post-treating.
Application Number
申请号		 200510030294 Application Date
申请日		 2005.09.30
Title 名称 Production of L80-13Cr oil casings
Publication Number
公开号		 1939656 Publication Date
公开日		 2007.04.04
Approval Pub. Date Granted Pub. Date
International Classification 分类号 B23P23/04;C21D9/08
Applicant(s) Name
申请人		 Baoshan Iron and Steel Co., Ltd.
Address 地址
Inventor(s) Name 发明人 Tang Haoqing;Huang Ziyang;Zhang Zhonghua;Wan Huazhong
Attorney & Agent 代理人 dumeng
More information 更  多  信  息


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