JPS55120419A - Manufacture of thin diameter electric welded steel pipe with inner surface coated with low melting point metal or its group alloy - Google Patents

Manufacture of thin diameter electric welded steel pipe with inner surface coated with low melting point metal or its group alloy

Info

Publication number
JPS55120419A
JPS55120419A JP2805279A JP2805279A JPS55120419A JP S55120419 A JPS55120419 A JP S55120419A JP 2805279 A JP2805279 A JP 2805279A JP 2805279 A JP2805279 A JP 2805279A JP S55120419 A JPS55120419 A JP S55120419A
Authority
JP
Japan
Prior art keywords
pipe
coating material
melting point
seam
low melting
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.)
Granted
Application number
JP2805279A
Other languages
Japanese (ja)
Other versions
JPS564325B2 (en
Inventor
Yasuaki Hashimoto
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.)
Usui Kokusai Sangyo Kaisha Ltd
Original Assignee
Usui Kokusai Sangyo Kaisha 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 Usui Kokusai Sangyo Kaisha Ltd filed Critical Usui Kokusai Sangyo Kaisha Ltd
Priority to JP2805279A priority Critical patent/JPS55120419A/en
Publication of JPS55120419A publication Critical patent/JPS55120419A/en
Publication of JPS564325B2 publication Critical patent/JPS564325B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Powder Metallurgy (AREA)
  • Coating With Molten Metal (AREA)

Abstract

PURPOSE: To manufacture titled electric welded steel pipe with surface coated with uniformly molten and spread coating material, by continuously feeding the low melting point coating material in longitudinal direction on one side plane of the steel strip to be inside surface of the pipe, by forming the steel strip into the seam pipe, and then, by heating the pipe within the nonoxidizing atmosphere.
CONSTITUTION: The thin steel strip 1 is formed into the open seam pipe 2 through the process I to deposit unfixed linear type low melting point coating material (m) on the inner surface. This pipe 2 is sent to the process II, where both mouth edges 1a, 1a, of the pipe 2 are electrically heated by the electrode roll ER, and are pressure welded (w) by the pressure welding roll R2, and the seam pipe 3 is formed. Then, this pipe 3 is sent to the process III, where the pipe 3 is passed through the primary heater F1 holding the nonoxidizing atmosphere, and the internally deposited coating material (m) is fixed m' on the inner surface of the pipe 3. Next, this seam pipe 4 is cooled and cut R4 into desired length l, and is passed through the secondary heater F2 holding the nonoxidizing atmosphere. In the heater F2, the pipe 4 is heated to melting point of the coating material (m) to melt and spread to coating material (m), and the aim seam pipe 5, that is the thin diameter electric welded steel pipe with inner surface provided with the coat (p), is manufactured.
COPYRIGHT: (C)1980,JPO&Japio
JP2805279A 1979-03-10 1979-03-10 Manufacture of thin diameter electric welded steel pipe with inner surface coated with low melting point metal or its group alloy Granted JPS55120419A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2805279A JPS55120419A (en) 1979-03-10 1979-03-10 Manufacture of thin diameter electric welded steel pipe with inner surface coated with low melting point metal or its group alloy

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2805279A JPS55120419A (en) 1979-03-10 1979-03-10 Manufacture of thin diameter electric welded steel pipe with inner surface coated with low melting point metal or its group alloy

Publications (2)

Publication Number Publication Date
JPS55120419A true JPS55120419A (en) 1980-09-16
JPS564325B2 JPS564325B2 (en) 1981-01-29

Family

ID=12237977

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2805279A Granted JPS55120419A (en) 1979-03-10 1979-03-10 Manufacture of thin diameter electric welded steel pipe with inner surface coated with low melting point metal or its group alloy

Country Status (1)

Country Link
JP (1) JPS55120419A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4928570A (en) * 1972-07-14 1974-03-14
JPS52122230A (en) * 1976-04-08 1977-10-14 Mitsuzakura Kougiyou Kk Method of hot dipping inner surface of fine metal pipe

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4928570A (en) * 1972-07-14 1974-03-14
JPS52122230A (en) * 1976-04-08 1977-10-14 Mitsuzakura Kougiyou Kk Method of hot dipping inner surface of fine metal pipe

Also Published As

Publication number Publication date
JPS564325B2 (en) 1981-01-29

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