发明名称 |
Method of manufacturing electric welded pipes under hot conditions |
摘要 |
A method of producing an electric-welded pipe by continuously shaping a steel sheet into a tubular form in a hot condition is disclosed, which is characterized by employing a forming roll arrangement of the constant pass-line type in combination with the downward bending system.
|
申请公布号 |
US5005395(A) |
申请公布日期 |
1991.04.09 |
申请号 |
US19900499908 |
申请日期 |
1990.03.27 |
申请人 |
SUMITOMO METAL INDUSTRIES, LTD. |
发明人 |
YASUMURA, ICHIRO;FUJIMOTO, KUNIHARU |
分类号 |
B21C37/08;B23K13/02 |
主分类号 |
B21C37/08 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|