DE140335C - - Google Patents
Info
- Publication number
- DE140335C DE140335C DENDAT140335D DE140335DA DE140335C DE 140335 C DE140335 C DE 140335C DE NDAT140335 D DENDAT140335 D DE NDAT140335D DE 140335D A DE140335D A DE 140335DA DE 140335 C DE140335 C DE 140335C
- Authority
- DE
- Germany
- Prior art keywords
- pipes
- lead
- core tube
- lining
- hard metal
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, rods, wire, tubes, profiles or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/06—Manufacture of metal sheets, rods, wire, tubes, profiles 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
- B21C37/154—Making multi-wall tubes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE140335C true DE140335C (enExample) |
Family
ID=408019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT140335D Active DE140335C (enExample) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE140335C (enExample) |
-
0
- DE DENDAT140335D patent/DE140335C/de active Active
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