发明名称 |
Apparatus for continuously producing steel pipes including using rotable beds of tools for different size pipe |
摘要 |
An apparatus for continuously producing electric-welded steel pipes by continuously supplying coiled strips as connected to one another by welding, progressively forming the strip into a tubular shape and high-frequency welding the opposed edges of the strip to form a seam. To produce required small quantities of steel pipes having varying diameters and wall thicknesses, a group of roll assemblies is replaceable by another group within a short period of time. Groups of forming, welding or sizing rolls are mountable on a polygonal bed which is lockable in position after rotation. For replacement, the bed is rotated by a hydraulic motor to bring the desired group of rolls to the proper position quickly.
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申请公布号 |
US4709845(A) |
申请公布日期 |
1987.12.01 |
申请号 |
US19870004836 |
申请日期 |
1987.01.13 |
申请人 |
KUSAKABE ELECTRIC & MACHINERY CO. LTD. |
发明人 |
AKIYAMA, MASASHI;TAGASHIRA, YASUO |
分类号 |
B21C37/06;B21C37/08;B21C37/30;(IPC1-7):B23K31/06 |
主分类号 |
B21C37/06 |
代理机构 |
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代理人 |
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主权项 |
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