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FI902324A - SAETT ATT TILLVERKA FYRKANTROER AV BELAGDA STAOLBAND. - Google Patents

SAETT ATT TILLVERKA FYRKANTROER AV BELAGDA STAOLBAND. Download PDF

Info

Publication number
FI902324A
FI902324A FI902324A FI902324A FI902324A FI 902324 A FI902324 A FI 902324A FI 902324 A FI902324 A FI 902324A FI 902324 A FI902324 A FI 902324A FI 902324 A FI902324 A FI 902324A
Authority
FI
Finland
Prior art keywords
forming
pipe
bottom part
side parts
coated
Prior art date
Application number
FI902324A
Other languages
Finnish (fi)
Other versions
FI902324A0 (en
FI108925B (en
Inventor
Lars Ingvar Ingvarsson
Original Assignee
Ortic Ab
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ortic Ab filed Critical Ortic Ab
Priority to FI902324A priority Critical patent/FI108925B/en
Publication of FI902324A0 publication Critical patent/FI902324A0/en
Publication of FI902324A publication Critical patent/FI902324A/en
Application granted granted Critical
Publication of FI108925B publication Critical patent/FI108925B/en

Links

Landscapes

  • Rigid Pipes And Flexible Pipes (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)

Abstract

The invention relates to a method of manufacturing square pipe from coated sheet steel. Both sides of the strip are coated with metal, such as zinc or aluminium. It is also possible to paint the strip industrially with PVC plastic, for example, directly on the steel surface or on the coated metal surface. The forming is carried out in a continuous roll-forming arrangement by first forming a profile 6 with bottom part 7 and side parts 8 in the same way as those of the finished pipe. The upper parts 9 are made in the same way as the bottom part 7 of the half pipe and terminated in folded-down sections 5. The angle 11 between the bottom part 7 and side parts 8 is made acute and the angle 12 between the side parts 8 and upper parts 9 is made obtuse. The opposing coating surfaces 13 on the turned-down sections 5 are heated by laser and in continued roll-forming are pressed together when the final shape of the pipe is fixed. <IMAGE>
FI902324A 1990-05-09 1990-05-09 Method of manufacturing square pipe from coated sheet steel FI108925B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FI902324A FI108925B (en) 1990-05-09 1990-05-09 Method of manufacturing square pipe from coated sheet steel

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI902324 1990-05-09
FI902324A FI108925B (en) 1990-05-09 1990-05-09 Method of manufacturing square pipe from coated sheet steel

Publications (3)

Publication Number Publication Date
FI902324A0 FI902324A0 (en) 1990-05-09
FI902324A true FI902324A (en) 1991-11-10
FI108925B FI108925B (en) 2002-04-30

Family

ID=8530411

Family Applications (1)

Application Number Title Priority Date Filing Date
FI902324A FI108925B (en) 1990-05-09 1990-05-09 Method of manufacturing square pipe from coated sheet steel

Country Status (1)

Country Link
FI (1) FI108925B (en)

Also Published As

Publication number Publication date
FI902324A0 (en) 1990-05-09
FI108925B (en) 2002-04-30

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Legal Events

Date Code Title Description
GB Transfer or assigment of application

Owner name: AKV-ORTIC AB

FG Patent granted

Owner name: ORTIC AB

MA Patent expired