MY126145A - Manufacturing method for angled steel pipes and manufacturing method for round steel pipes - Google Patents

Manufacturing method for angled steel pipes and manufacturing method for round steel pipes

Info

Publication number
MY126145A
MY126145A MYPI0105380A MY126145A MY 126145 A MY126145 A MY 126145A MY PI0105380 A MYPI0105380 A MY PI0105380A MY 126145 A MY126145 A MY 126145A
Authority
MY
Malaysia
Prior art keywords
steel pipes
portions
manufacturing
allow
angled steel
Prior art date
Application number
Inventor
Hiromu Nakajima
Norio Nakajima
Original Assignee
Nakajima Steel Pipe Co 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
Priority claimed from JP7192343A external-priority patent/JPH0938721A/en
Priority claimed from JP7288232A external-priority patent/JPH09103821A/en
Priority claimed from JP7288233A external-priority patent/JPH0999324A/en
Priority claimed from JP01478396A external-priority patent/JP3231239B2/en
Application filed by Nakajima Steel Pipe Co Ltd filed Critical Nakajima Steel Pipe Co Ltd
Publication of MY126145A publication Critical patent/MY126145A/en

Links

Landscapes

  • Bending Of Plates, Rods, And Pipes (AREA)
  • Heat Treatment Of Steel (AREA)
  • Rod-Shaped Construction Members (AREA)

Abstract

ANGLED STEEL PIPES MANUFACTURED BY COLD FORMING ALLOW ANGLE PORTIONS AND SEAM-WELDED PORTIONS THEREOF TO HAVE HARDNESS VALUES PRETTY HIGHER THAN THOSE OF FLAT PLATE PORTIONS AND NO YIELD POINTS, ALLOW TENSILE STRESS AND COMPRESSIVE STRESS TO REMAIN IN THE ANGLE PORTIONS AND SEAM-WELDED PORTIONS, THEREBY LOWERING BUCKLING STRENGTH AND ALLOW THE ANGLE PORTIONS TO BE REMARKABLY EMBRITTLED DUE TO TOUGHNESS DEFORMATION LOCALLY REMAINING IN ANGLE PORTIONS AFTER BENDING4 THE METHOD ACCORDING TO THE PRESENT INVENTION MAKES IT POSSIBLE TO MANUFACTURE ANGLED STEEL PIPES (3, 59, 86) WHICH ARE SOFT AND HIGHLY STRETCHABLE OVER THE ENTIRE SECTIONS THEREOF, ALMOST FREE FROM RESIDUAL STRESSES, AND HAVE HIGH BUCKLING STRENGTH, EXCELLENT SECONDARY WELDABILITY AND SUFFICIENT TOUGHNESS BY HOT FORMING WITH AN ANGLED STEEL PIPE FORMING MILL (20, 25, 108).
MYPI0105380 1995-07-28 1996-07-27 Manufacturing method for angled steel pipes and manufacturing method for round steel pipes MY126145A (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP7192343A JPH0938721A (en) 1995-07-28 1995-07-28 Production of square steel tube
JP19783895 1995-08-03
JP20263795 1995-08-09
JP7288232A JPH09103821A (en) 1995-08-09 1995-11-07 Manufacture of square steel tube
JP7288233A JPH0999324A (en) 1995-08-03 1995-11-07 Manufacture of square tube
JP01478396A JP3231239B2 (en) 1996-01-31 1996-01-31 Steel pipe manufacturing method

Publications (1)

Publication Number Publication Date
MY126145A true MY126145A (en) 2006-09-29

Family

ID=27548533

Family Applications (2)

Application Number Title Priority Date Filing Date
MYPI20015370A MY124926A (en) 1995-07-28 1996-07-27 Manufacturing method for angled steel pipes and manufacturing method for round steel pipes
MYPI0105380 MY126145A (en) 1995-07-28 1996-07-27 Manufacturing method for angled steel pipes and manufacturing method for round steel pipes

Family Applications Before (1)

Application Number Title Priority Date Filing Date
MYPI20015370A MY124926A (en) 1995-07-28 1996-07-27 Manufacturing method for angled steel pipes and manufacturing method for round steel pipes

Country Status (3)

Country Link
CN (3) CN1066075C (en)
HK (2) HK1036027A1 (en)
MY (2) MY124926A (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102861766B (en) * 2012-09-20 2015-04-01 衡阳华菱钢管有限公司 Square tube rolling device, square tube sizing mill with same and production method of square tube
CN103629965A (en) * 2013-11-29 2014-03-12 锦州秀亭制管有限公司 Cooling pipe with square pits
CN104128373A (en) * 2014-08-12 2014-11-05 无锡市瑞尔精密机械股份有限公司 Novel machine set for producing hot rolling seamless square steel pipe
CN104353699B (en) * 2014-10-11 2016-09-21 浙江久德不锈钢型材有限公司 Steel pipe mould
CN104307924A (en) * 2014-11-14 2015-01-28 武汉钢铁(集团)公司 Square rectangular tube cold roll forming method
KR102400687B1 (en) * 2018-03-16 2022-05-20 제이에프이 스틸 가부시키가이샤 Manufacturing method of each steel pipe and each steel pipe
CN108453153B (en) * 2018-05-03 2024-06-28 石家庄富瑞沃机电设备有限公司 Roller device for directly forming square tube
CN113677448B (en) * 2019-04-08 2024-02-02 杰富意钢铁株式会社 Square steel pipe, method for producing same, and building structure
KR20220035492A (en) * 2019-08-30 2022-03-22 제이에프이 스틸 가부시키가이샤 Rectangular steel pipe, manufacturing method thereof, and building structure
CN111229859B (en) * 2020-01-14 2021-12-03 长沙市大川防火材料有限公司 Automatic production process of air duct
WO2021187115A1 (en) * 2020-03-16 2021-09-23 Ｊｆｅスチール株式会社 Square steel pipe for beam-column joint, beam-column joint structure using same, and method for manufacturing square steel pipe
CN111687213A (en) * 2020-06-23 2020-09-22 刘伟良 Hot rolling device is used in production of nonrust steel pipe

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU5477299A (en) * 1998-08-12 2000-03-06 Rofin Australia Pty Ltd Fluid light guide

Also Published As

Publication number Publication date
HK1036028A1 (en) 2001-12-21
CN1291532A (en) 2001-04-18
HK1036027A1 (en) 2001-12-21
CN1066075C (en) 2001-05-23
MY124926A (en) 2006-07-31
CN1154880A (en) 1997-07-23
CN1177656C (en) 2004-12-01
CN1186141C (en) 2005-01-26
CN1291533A (en) 2001-04-18

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