GB1433431A - Manufacture of tubular members - Google Patents
Manufacture of tubular membersInfo
- Publication number
- GB1433431A GB1433431A GB591674A GB591674A GB1433431A GB 1433431 A GB1433431 A GB 1433431A GB 591674 A GB591674 A GB 591674A GB 591674 A GB591674 A GB 591674A GB 1433431 A GB1433431 A GB 1433431A
- Authority
- GB
- United Kingdom
- Prior art keywords
- strip
- cross
- corner
- bending
- polygonal
- 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.)
- Expired
Links
Classifications
-
- 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
- B21D5/00—Bending sheet metal along straight lines, e.g. to form simple curves
- B21D5/06—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles
- B21D5/10—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles for making tubes
- B21D5/12—Bending sheet metal along straight lines, e.g. to form simple curves by drawing procedure making use of dies or forming-rollers, e.g. making profiles for making tubes making use of forming-rollers
-
- 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
- B21C37/08—Making tubes with welded or soldered seams
- B21C37/0803—Making tubes with welded or soldered seams the tubes having a special shape, e.g. polygonal tubes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bending Of Plates, Rods, And Pipes (AREA)
Abstract
1433431 Making polygonal tubing; bending AFRICAN GATE & FENCE WORKS Ltd 8 Feb 1974 [14 Feb 1973] 05916/74 Headings B3A and B3E A method of making tubular members of polygonal cross-section from strip material comprises bending the strip by rolling to form the desired cross-sectional shape so that its edges abut along a corner of the member and welding the edges together at the corner, the longitudinal edge portions of the strip being the first to be bent and welding being effected only when the final cross-sectional shape has been formed. The strip passes through a series of roller pairs, the first pair 23 being alignment rollers, the second pair 2 bending each strip edge to form a fraction of a completed corner of the tubular member, and the remaining pairs 4, 7, 8, 11, 12 bend the strip into rectangular or other polygonal crosssection. The rollers comprise hard steel and sections (30), Fig. 10 (not shown), and mild steel spacing sections (31) which may be added or removed to vary the cross-sectional dimensions of the piping being formed. The strip edges are welded together at a high-frequency welding station 24 and a cutting blade 25 trims the weld. Lengths of the formed tube may be subsequently cut off.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ZA731045A ZA731045B (en) | 1973-02-14 | 1973-02-14 | Improvements in the manufacture of tubular members |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1433431A true GB1433431A (en) | 1976-04-28 |
Family
ID=25565953
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB591674A Expired GB1433431A (en) | 1973-02-14 | 1974-02-08 | Manufacture of tubular members |
Country Status (7)
Country | Link |
---|---|
DE (1) | DE2406710A1 (en) |
FR (1) | FR2217083B3 (en) |
GB (1) | GB1433431A (en) |
IE (1) | IE39013B1 (en) |
IL (1) | IL44178A (en) |
IT (1) | IT1027520B (en) |
ZA (1) | ZA731045B (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4122696A (en) * | 1976-12-13 | 1978-10-31 | Nippon Steel Corporation | Method and apparatus for manufacturing metallic pipe |
US5101167A (en) * | 1989-11-01 | 1992-03-31 | Mitsubishi Denki Kabushiki Kaisha | Accelerator vacuum pipe having a layer of a getter material disposed on an inner surface of the pipe |
EP0715904A1 (en) * | 1994-11-29 | 1996-06-12 | Josef Welser Ohg Profilier- Und Stanzwerk | Method of manufacturing a rollformed hollow profile from metal sheet |
ITMI20091284A1 (en) * | 2009-07-21 | 2011-01-22 | Olimpia 80 Srl | VARIABLE LINEAR GEOMETRY MACHINE TO FORM SQUARE TUBES CONTINUOUSLY |
-
1973
- 1973-02-14 ZA ZA731045A patent/ZA731045B/en unknown
-
1974
- 1974-02-08 GB GB591674A patent/GB1433431A/en not_active Expired
- 1974-02-10 IL IL44178A patent/IL44178A/en unknown
- 1974-02-11 IE IE00258/74A patent/IE39013B1/en unknown
- 1974-02-13 DE DE19742406710 patent/DE2406710A1/en not_active Withdrawn
- 1974-02-14 FR FR7405070A patent/FR2217083B3/fr not_active Expired
- 1974-04-08 IT IT20778/74A patent/IT1027520B/en active
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4122696A (en) * | 1976-12-13 | 1978-10-31 | Nippon Steel Corporation | Method and apparatus for manufacturing metallic pipe |
US5101167A (en) * | 1989-11-01 | 1992-03-31 | Mitsubishi Denki Kabushiki Kaisha | Accelerator vacuum pipe having a layer of a getter material disposed on an inner surface of the pipe |
EP0715904A1 (en) * | 1994-11-29 | 1996-06-12 | Josef Welser Ohg Profilier- Und Stanzwerk | Method of manufacturing a rollformed hollow profile from metal sheet |
ITMI20091284A1 (en) * | 2009-07-21 | 2011-01-22 | Olimpia 80 Srl | VARIABLE LINEAR GEOMETRY MACHINE TO FORM SQUARE TUBES CONTINUOUSLY |
EP2279807A1 (en) * | 2009-07-21 | 2011-02-02 | Olimpia 80 SRL | A variable linear geometry machine for continuously forming square tubes |
US8100312B2 (en) | 2009-07-21 | 2012-01-24 | Olimpia 80 S.R.L. | Variable linear geometry machine for continuously forming square tubes |
RU2534651C2 (en) * | 2009-07-21 | 2014-12-10 | Олимпия 80 С.Р.Л. | Machine with variable linear geometry for continuous forming of pipes with square cross-section |
Also Published As
Publication number | Publication date |
---|---|
FR2217083A1 (en) | 1974-09-06 |
DE2406710A1 (en) | 1974-08-22 |
IL44178A0 (en) | 1974-05-16 |
FR2217083B3 (en) | 1976-11-26 |
ZA731045B (en) | 1974-06-26 |
IE39013B1 (en) | 1978-07-19 |
IE39013L (en) | 1974-08-14 |
IL44178A (en) | 1977-01-31 |
IT1027520B (en) | 1978-12-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB1049600A (en) | Method of and apparatus for the automatic continuous production of lattice girders | |
US2843725A (en) | Box section and method of making | |
US3039414A (en) | Method of producing hollow four-sided tapering beams or columns from sheet metal | |
GB1398463A (en) | Method of making profiled rails and bodies composed thereof | |
FR2269387A1 (en) | Machine for mfg concrete reinforcement cages - uses bars bent about longitudinal bars and welded | |
US3728881A (en) | Method and apparatus for joining sheet metal, and sheet metal joints | |
GB1433431A (en) | Manufacture of tubular members | |
GB1168478A (en) | Forming apparatus for transversely curving metal ribbons | |
ES8101998A1 (en) | Method of forming profiles, especially tubular profiles. | |
GB1446023A (en) | Methods and apparatus for manufacturing heating radiator panels | |
GB1389184A (en) | Method and apparatus for the automatic manufacture of duct elements | |
US1805283A (en) | Method of manufacturing hollow articles | |
JPS55112128A (en) | Production of large-diameter square steel pipe | |
US2529088A (en) | Method of making one-piece angular frame members | |
GB1232494A (en) | ||
GB975697A (en) | Fabricated tubing and the method and apparatus for producing the same | |
GB1063111A (en) | Welding tapered pipe | |
KR100320754B1 (en) | Non-welding rectangular pipe and manufacturing method thereof | |
GB1387157A (en) | Making of truss members | |
GB988273A (en) | Template for the continuous production of tubing | |
GB1039409A (en) | Improved tube making equipment | |
US2005579A (en) | Electrically welding pipe | |
FR2221604A1 (en) | Metal reinforcing for concrete etc. - has bars braced with V-shaped cross-pieces of continuous metal sheet | |
GB1093771A (en) | A method of manufacturing double-walled or multi-walled tubes | |
GB1164007A (en) | Bolts |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |