| 发明名称 |
METHOD OF PRODUCING LARGE-DIAMETER LONGITUDINAL WELDED PIPES |
| 摘要 |
FIELD: technological processes.SUBSTANCE: invention relates to pipe production, particularly to electric-weld pipe production, and can be used in producing large-diameter longitudinal welded pipes. After moulding a pipe shell, edges of the central part of the profile are bent using two top rollers and a bottom roller with a defined radius.EFFECT: improved geometric configuration of pipes.3 dwg |
| 申请公布号 |
RU2571298(C2) |
申请公布日期 |
2015.12.20 |
| 申请号 |
RU20140106287 |
申请日期 |
2014.02.19 |
| 申请人 |
OTKRYTOE AKTSIONERNOE OBSHCHESTVO "VOLZHSKIJ TRUBNYJ ZAVOD" |
发明人 |
CHETVERIKOV SERGEJ GENNAD'EVICH;FRUNKIN DMITRIJ BORISOVICH;KHRISTOFOROV ALEKSEJ SERGEEVICH;URJADOV RUSLAN VLADIMIROVICH |
| 分类号 |
B21C37/08 |
主分类号 |
B21C37/08 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
