FIELD: pipeline engineering.
SUBSTANCE: pipe has wall provided with flat sections. The longitudinal projections and mating hollows are provided in the middle of opposite flat sections of the wall.
EFFECT: enhanced reliability of joining.
2 cl, 3 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| TUBE | 2003 |
|
RU2239744C1 |
| FLEXIBLE REINFORCED PIPE, OR PART OF PIPELINE (VERSIONS), AND THEIR MANUFACTURING METHOD | 2012 |
|
RU2509949C2 |
| PIPE | 2003 |
|
RU2240463C1 |
| ANTI-SKID STUD | 2019 |
|
RU2724526C1 |
| MULTI-LAYER TUBE | 2001 |
|
RU2204757C2 |
| METHOD OF FORMING SHEET PARTS MADE OF COMPOSITE MATERIALS WITH SINUSOIDAL CORRUGATIONS | 1991 |
|
SU1805605A1 |
| PIPE | 2004 |
|
RU2258858C1 |
| COATING OF THERMOSETTING POLYETHYLENE FILM | 0 |
|
SU1482513A3 |
| BANDAGE OF ANCHOR WINDING OF ELECTRIC MACHINE | 2006 |
|
RU2321134C2 |
| THREE-LAYER SHOCK-DAMPING SHELL | 0 |
|
SU998687A1 |
