DE116609C - - Google Patents
Info
- Publication number
- DE116609C DE116609C DENDAT116609D DE116609DA DE116609C DE 116609 C DE116609 C DE 116609C DE NDAT116609 D DENDAT116609 D DE NDAT116609D DE 116609D A DE116609D A DE 116609DA DE 116609 C DE116609 C DE 116609C
- Authority
- DE
- Germany
- Prior art keywords
- rib
- tube
- edge
- widened
- bulges
- Prior art date
- 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.)
- Active
Links
- 210000000614 Ribs Anatomy 0.000 claims description 19
- 241001148662 Phragmites australis Species 0.000 claims 1
- WYTGDNHDOZPMIW-UHOFOFEASA-O Serpentine Natural products O=C(OC)C=1[C@@H]2[C@@H]([C@@H](C)OC=1)C[n+]1c(c3[nH]c4c(c3cc1)cccc4)C2 WYTGDNHDOZPMIW-UHOFOFEASA-O 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
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
- B21C37/22—Making finned or ribbed tubes by fixing strip or like material to tubes
- B21C37/26—Making finned or ribbed tubes by fixing strip or like material to tubes helically-ribbed tubes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Publications (1)
Publication Number | Publication Date |
---|---|
DE116609C true DE116609C (fr) |
Family
ID=385942
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DENDAT116609D Active DE116609C (fr) |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE116609C (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3216960A1 (de) * | 1982-05-06 | 1983-11-10 | Kabel Metallwerke Ghh | Verfahren zur herstellung eines rohres mit an seiner oberflaeche schraubenlinienfoermig verlaufenden rippen |
-
0
- DE DENDAT116609D patent/DE116609C/de active Active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3216960A1 (de) * | 1982-05-06 | 1983-11-10 | Kabel Metallwerke Ghh | Verfahren zur herstellung eines rohres mit an seiner oberflaeche schraubenlinienfoermig verlaufenden rippen |
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