FIELD: production of shaped pipes. SUBSTANCE: plant for plant corrugation includes attachment unit with bar and grip for blank, corrugation unit with body, reducing rolls, and actuator, shaping mandrel and reducing unit and expansion unit of pipe blank. Reducing unit is located in body of corrugation unit, and expansion unit is found on bar under shaping mandrel. Reducing unit is made in form of holder with split die and fastener. Expansion unit is made in form of body with cover and movable jaws arranged between them. EFFECT: higher efficiency. 3 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| PATCH FOR REPAIRING CASING STRINGS | 1990 |
|
RU2068940C1 |
| DEVICE FOR APPLYING LUBRICATION TO INNER SURFACE OF LONGITUDINAL-CORRUGATED PIPE | 1991 |
|
RU2016345C1 |
| METHOD OF MANUFACTURE OF CORRUGATED PIPES | 0 |
|
SU1724403A1 |
| DEVICE FOR REPAIR OF CASED-THROUGH WELLS | 1992 |
|
RU2047731C1 |
| ASSEMBLY OF PATCHES FOR REPAIR OF CASINGS | 0 |
|
SU1804543A3 |
| PATCH FOR REPAIR OF CASING STRING | 0 |
|
SU1818459A1 |
| TUBE LONGITUDINAL CORRUGATION DEVICE | 0 |
|
SU1803226A1 |
| METHOD OF FABRICATING CORRUGATED STEEL PATCH | 0 |
|
SU1749267A1 |
| CORE HEAD FOR EXPANDING SEALS AT REPAIRS OF WELL CASING | 0 |
|
SU746084A1 |
| APPARATUS FOR REPAIRING CASINGS | 0 |
|
SU989038A1 |
