DD124868A6 - - Google Patents
Info
- Publication number
- DD124868A6 DD124868A6 DD189986A DD18998675A DD124868A6 DD 124868 A6 DD124868 A6 DD 124868A6 DD 189986 A DD189986 A DD 189986A DD 18998675 A DD18998675 A DD 18998675A DD 124868 A6 DD124868 A6 DD 124868A6
- Authority
- DD
- German Democratic Republic
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
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
- B21C37/15—Making tubes of special shape; Making tube fittings
- B21C37/155—Making tubes with non circular section
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D41/00—Application of procedures in order to alter the diameter of tube ends
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/4935—Heat exchanger or boiler making
- Y10T29/49391—Tube making or reforming
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping Of Tube Ends By Bending Or Straightening (AREA)
- Duct Arrangements (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Metal Extraction Processes (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| BG2850474 | 1974-12-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DD124868A6 true DD124868A6 (da) | 1977-03-16 |
Family
ID=3900812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DD189986A DD124868A6 (da) | 1974-12-19 | 1975-12-09 |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US4008596A (da) |
| JP (1) | JPS51108662A (da) |
| DD (1) | DD124868A6 (da) |
| DE (1) | DE2557180A1 (da) |
| DK (1) | DK569775A (da) |
| FI (1) | FI753587A (da) |
| FR (1) | FR2294774A2 (da) |
| GB (1) | GB1499930A (da) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3504967B2 (ja) * | 1994-01-31 | 2004-03-08 | アイシン精機株式会社 | 非円形断面の曲がり管を製造する方法および装置 |
| US6655182B2 (en) | 2001-05-18 | 2003-12-02 | Lindab Ab | Apparatus and method for reshaping tubes |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3056447A (en) * | 1962-10-02 | Can body reshaping means | ||
| US3324534A (en) * | 1964-08-21 | 1967-06-13 | Joseph H Spurk | Method of forming a transition section for connecting a circular tube and a noncircular tube |
| US3662583A (en) * | 1970-02-06 | 1972-05-16 | Charles H Moore Sr | Transition members |
-
1975
- 1975-12-09 DD DD189986A patent/DD124868A6/xx unknown
- 1975-12-12 GB GB51128/75A patent/GB1499930A/en not_active Expired
- 1975-12-15 DK DK569775A patent/DK569775A/da not_active Application Discontinuation
- 1975-12-18 JP JP50150233A patent/JPS51108662A/ja active Pending
- 1975-12-18 DE DE19752557180 patent/DE2557180A1/de active Pending
- 1975-12-18 FR FR7538876A patent/FR2294774A2/fr active Granted
- 1975-12-18 FI FI753587A patent/FI753587A/fi not_active Application Discontinuation
- 1975-12-19 US US05/642,495 patent/US4008596A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| FR2294774B2 (da) | 1978-05-12 |
| US4008596A (en) | 1977-02-22 |
| GB1499930A (en) | 1978-02-01 |
| DK569775A (da) | 1976-06-20 |
| FI753587A (da) | 1976-06-20 |
| JPS51108662A (da) | 1976-09-27 |
| DE2557180A1 (de) | 1976-06-24 |
| FR2294774A2 (fr) | 1976-07-16 |