JPS5570413A - Manufacture of large diameter welded pipe - Google Patents

Manufacture of large diameter welded pipe

Info

Publication number
JPS5570413A
JPS5570413A JP14372878A JP14372878A JPS5570413A JP S5570413 A JPS5570413 A JP S5570413A JP 14372878 A JP14372878 A JP 14372878A JP 14372878 A JP14372878 A JP 14372878A JP S5570413 A JPS5570413 A JP S5570413A
Authority
JP
Japan
Prior art keywords
press
seam
welded pipe
pipe
manufacture
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.)
Pending
Application number
JP14372878A
Other languages
Japanese (ja)
Inventor
Sadao Tanaka
Hiroyuki Azuma
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nippon Steel Corp
Original Assignee
Sumitomo Metal Industries Ltd
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 Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP14372878A priority Critical patent/JPS5570413A/en
Publication of JPS5570413A publication Critical patent/JPS5570413A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To manufacture the large diameter welded pipe free from the dimensional defect, possessing uniform material characteristics in circumferential and logitudinal directions, by welding the seam of the open seam pipe, and next, by drawing for straightening and finishing with the O-press.
CONSTITUTION: The blank sheet 4, being prepared for the welding groove at its both edges and being at its edge, is bent into U with the U-press 1, and next is formed into the cylindrical open seam pipe 5 with the O-press 2; then, the seam is welded from inside and outside, and the straight seam welded pipe 6 is obtained. Next, this welded pipe 6 is drawn over the whole length with the O-press 3 to reduce the outer diameter finishing the final product.
COPYRIGHT: (C)1980,JPO&Japio
JP14372878A 1978-11-21 1978-11-21 Manufacture of large diameter welded pipe Pending JPS5570413A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14372878A JPS5570413A (en) 1978-11-21 1978-11-21 Manufacture of large diameter welded pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14372878A JPS5570413A (en) 1978-11-21 1978-11-21 Manufacture of large diameter welded pipe

Publications (1)

Publication Number Publication Date
JPS5570413A true JPS5570413A (en) 1980-05-27

Family

ID=15345613

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14372878A Pending JPS5570413A (en) 1978-11-21 1978-11-21 Manufacture of large diameter welded pipe

Country Status (1)

Country Link
JP (1) JPS5570413A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011521790A (en) * 2008-06-06 2011-07-28 アイゼンバウ クレーマー ゲゼルシャフト ミット ベシュレンクテル ハフツング Method for manufacturing large steel pipes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011521790A (en) * 2008-06-06 2011-07-28 アイゼンバウ クレーマー ゲゼルシャフト ミット ベシュレンクテル ハフツング Method for manufacturing large steel pipes

Similar Documents

Publication Publication Date Title
ATE30683T1 (en) WELDED DOUBLE-WALLED PIPE AND PROCESS FOR ITS MANUFACTURE.
JPS5570413A (en) Manufacture of large diameter welded pipe
JPS5550916A (en) Forming method for straight seam welded large diameter pipe
JPS61115614A (en) Production of square tube
JPS5570420A (en) Forming method for thick walled uo steel pipe
JPS5522442A (en) Circular pipe forming method and device thereof
JPS5545553A (en) Preparation of double pipe of large diameter
JPS55161619A (en) Manufacture of long-sized sheet film having stretching direction at desired angle against longitudinal axis thereof
JPS56139245A (en) Production of rim
JPS55118835A (en) Longitudinally overlapping method of forming corrugate tape
JPS5683656A (en) Pressure vessel
JPS5530327A (en) Pipe making method
JPS555165A (en) Production of seamed pipe
JPS5561391A (en) Inside surface bead smoothing device of welding metal pipe
JPS5623315A (en) Production of spiral tube with rib
JPS5699093A (en) Manufacture of stepped pipe
JPS5346184A (en) Process for forming of annular bulb
JPS5677015A (en) Manufacture of pipe with thick wall and small inner diameter
JPS5533841A (en) Production of hollow double pipe
JPS54155975A (en) Rolling method for ring type product
JPS57202908A (en) Rolling mill
JPS558350A (en) Method and apparatus for pre-cast forging of pipe material
JPS5547959A (en) Weight reduced steering wheel
JPS5659532A (en) Method and apparatus for manufacturing spiral pipe
JPS55112106A (en) Method and apparatus for ellipse type press roll piercing work