FR870169A - - Google Patents
Info
- Publication number
- FR870169A FR870169A FR870169DA FR870169A FR 870169 A FR870169 A FR 870169A FR 870169D A FR870169D A FR 870169DA FR 870169 A FR870169 A FR 870169A
- Authority
- FR
- France
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C45/00—Separating mandrels from work or vice versa
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B19/00—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work
- B21B19/02—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work the axes of the rollers being arranged essentially diagonally to the axis of the work, e.g. "cross" tube-rolling ; Diescher mills, Stiefel disc piercers or Stiefel rotary piercers
- B21B19/06—Rolling hollow basic material, e.g. Assel mills
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Metal Rolling (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEM143597D DE712585C (en) | 1938-12-10 | 1938-12-10 | Machine for rolling cold drawn pipes over the bar for a plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR870169A true FR870169A (en) | 1942-03-04 |
Family
ID=7335338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR870169D Expired FR870169A (en) | 1938-12-10 |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE712585C (en) |
| FR (1) | FR870169A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3148498C2 (en) * | 1981-12-08 | 1986-06-05 | Esser-Brieden GmbH & Co KG, 4788 Warstein | Process for the production of a double-walled pipe for the transport of solids |
-
0
- FR FR870169D patent/FR870169A/fr not_active Expired
-
1938
- 1938-12-10 DE DEM143597D patent/DE712585C/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE712585C (en) | 1941-10-22 |