发明名称 Shaping slotted sheet metal tubes in tube - welding plant
摘要 <p>Device has rollers which act radially, externally and partly internally on the sheet metal and bend it to a tube while the sheet advances continuously. Spec., several sets of rollers are arranged behind each other in the path of the sheet.</p>
申请公布号 DE1926750(A1) 申请公布日期 1970.12.23
申请号 DE19691926750 申请日期 1969.05.24
申请人 DEMAG AG 发明人 BRAUN,OTTO
分类号 B21D5/12 主分类号 B21D5/12
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