发明名称 Process for Manufacturing Cold-Formed Precision Steel Pipes
摘要 The invention relates to a process for manufacturing cold-formed, in particular cold-drawn, precision steel pipes for application in particular as pressure-operated cylinder pipes with optimum addition of one or several alloying elements as well as impurities caused by melting. A seamless, hot-formed pipe blank or welded pipe blank made from a hot strip with defined starting condition is hereby drawn in one pass or in several passes into a finished pipe, and the pipe undergoes a heat treatment before the finishing pass.
申请公布号 US2008302452(A1) 申请公布日期 2008.12.11
申请号 US20060067756 申请日期 2006.08.18
申请人 MHP MANNESMANN PRAZISROHR GMBH 发明人 SIEKMEYER JOSEF;MUSSMANN WOLFGANG;SEE LOTHAR;HERZING SVEN
分类号 C21D9/08 主分类号 C21D9/08
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