| 发明名称 |
FORFARANDE OCH ANORDNING FOR KALLDRAGNING AV ROR |
| 摘要 |
A method of tube drawing a cold finished stepped internal diameter tube utilizing a novel mandrel plug having compound working surfaces designed to automatically adjust to the varying internal diameters formed in a tube hollow to be worked as it is drawn through a die. |
| 申请公布号 |
SE441067(B) |
申请公布日期 |
1985.09.09 |
| 申请号 |
SE19780009094 |
申请日期 |
1978.08.29 |
| 申请人 |
THE BABCOCK & WILCOX COMPANY |
发明人 |
P E * STUMP |
| 分类号 |
B21C1/00;B21C1/24;B21C3/16;(IPC1-7):B21C1/24 |
主分类号 |
B21C1/00 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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