JPS6447842A - Production of hot-dipped galvanized steel tube - Google Patents

Production of hot-dipped galvanized steel tube

Info

Publication number
JPS6447842A
JPS6447842A JP20486587A JP20486587A JPS6447842A JP S6447842 A JPS6447842 A JP S6447842A JP 20486587 A JP20486587 A JP 20486587A JP 20486587 A JP20486587 A JP 20486587A JP S6447842 A JPS6447842 A JP S6447842A
Authority
JP
Japan
Prior art keywords
tube
subjected
hot
steel tube
treatment
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
JP20486587A
Other languages
Japanese (ja)
Inventor
Yasushi Kajiwara
Takeo Katabuchi
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 JP20486587A priority Critical patent/JPS6447842A/en
Publication of JPS6447842A publication Critical patent/JPS6447842A/en
Pending legal-status Critical Current

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  • Coating With Molten Metal (AREA)

Abstract

PURPOSE:To reduce the thickness of a galvanized layer and to provide the titled steel tube with excellent bending resistance without impairing the corrosion resistance by subjecting the starting tube to a blasting treatment into the specific surface roughness and thereafter subjecting it to a pickling treatment and hot-dipping galvanizing. CONSTITUTION:The starting tube is subjected to a shot blasting treatment into 20-80mum surface rughness, is degreased at need and is subjected to a pickling treatment for about 10-30min. Said tube is successively subjected to a flux treatment by the double salt of ZnCl2 and NH4Cl2, etc. The tube is thereafter subjected to ordinary hot-dipping galvanizing. By this method, the titled steel tube having sufficient corrosion resistance and showing excellent bending resistance can be obtd.
JP20486587A 1987-08-18 1987-08-18 Production of hot-dipped galvanized steel tube Pending JPS6447842A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP20486587A JPS6447842A (en) 1987-08-18 1987-08-18 Production of hot-dipped galvanized steel tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP20486587A JPS6447842A (en) 1987-08-18 1987-08-18 Production of hot-dipped galvanized steel tube

Publications (1)

Publication Number Publication Date
JPS6447842A true JPS6447842A (en) 1989-02-22

Family

ID=16497680

Family Applications (1)

Application Number Title Priority Date Filing Date
JP20486587A Pending JPS6447842A (en) 1987-08-18 1987-08-18 Production of hot-dipped galvanized steel tube

Country Status (1)

Country Link
JP (1) JPS6447842A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU670318B2 (en) * 1992-09-25 1996-07-11 Tubemakers Of Australia Limited Method of manufacturing galvanised open or closed steel sections
NL1020689C2 (en) * 2002-01-16 2003-07-17 Paulus Theodorus Heesakkers Thermally galvanizing of objects, i.e. metal objects, by pretreating object, including blasting with grains to remove at least surface layer from object
WO2003060177A1 (en) * 2002-01-16 2003-07-24 Bogers, Mathijs, Johannes, Anna, Engelina Method and device for galvanizing objects
JP2006222023A (en) * 2005-02-14 2006-08-24 Ngk Spark Plug Co Ltd Method for manufacturing spark plug
US7261922B2 (en) * 2004-07-23 2007-08-28 Valmont Industries, Inc. Method of applying additional corrosion protection to a localized portion of a galvanized pole

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU670318B2 (en) * 1992-09-25 1996-07-11 Tubemakers Of Australia Limited Method of manufacturing galvanised open or closed steel sections
NL1020689C2 (en) * 2002-01-16 2003-07-17 Paulus Theodorus Heesakkers Thermally galvanizing of objects, i.e. metal objects, by pretreating object, including blasting with grains to remove at least surface layer from object
WO2003060177A1 (en) * 2002-01-16 2003-07-24 Bogers, Mathijs, Johannes, Anna, Engelina Method and device for galvanizing objects
US7367105B2 (en) 2002-01-16 2008-05-06 Galva Solutions, B.V. Method and device for galvanizing objects
US7261922B2 (en) * 2004-07-23 2007-08-28 Valmont Industries, Inc. Method of applying additional corrosion protection to a localized portion of a galvanized pole
JP2006222023A (en) * 2005-02-14 2006-08-24 Ngk Spark Plug Co Ltd Method for manufacturing spark plug

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