JPS5455064A - Production of metal pipe coated with plastics - Google Patents

Production of metal pipe coated with plastics

Info

Publication number
JPS5455064A
JPS5455064A JP12088577A JP12088577A JPS5455064A JP S5455064 A JPS5455064 A JP S5455064A JP 12088577 A JP12088577 A JP 12088577A JP 12088577 A JP12088577 A JP 12088577A JP S5455064 A JPS5455064 A JP S5455064A
Authority
JP
Japan
Prior art keywords
water bath
nozzles
coated
metal pipe
plastics
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
JP12088577A
Other languages
Japanese (ja)
Inventor
Tadao Kimura
Katsumi Omori
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.)
JFE Engineering Corp
Original Assignee
NKK Corp
Nippon Kokan 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 NKK Corp, Nippon Kokan Ltd filed Critical NKK Corp
Priority to JP12088577A priority Critical patent/JPS5455064A/en
Publication of JPS5455064A publication Critical patent/JPS5455064A/en
Pending legal-status Critical Current

Links

Landscapes

  • Extrusion Moulding Of Plastics Or The Like (AREA)

Abstract

PURPOSE: To support and cool a coated metal pipe in which a plastic is in a molten state without damaging the pipe and improve productivity, by jetting a cooling liquid from nozzles.
CONSTITUTION: For instance, the steel pipe 20 is preheated and coated with a molten polyethylene 0.3mm thick. A large number of the nozzles 16 are equipped on the inner water bath 15 in the cooling bath 14, and water is fed to the inner water bath 15 by the pumps 17, overflown from the top of the inner water bath 15 to the outer water bath 18 to be circulated. The steel pipe 20 coated with the molten polyethylene is sent to the cooling bath 14 and cooled while being supported by jets from the nozzles 16.
EFFECT: No defect such as unevenness in film appearance
COPYRIGHT: (C)1979,JPO&Japio
JP12088577A 1977-10-11 1977-10-11 Production of metal pipe coated with plastics Pending JPS5455064A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12088577A JPS5455064A (en) 1977-10-11 1977-10-11 Production of metal pipe coated with plastics

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12088577A JPS5455064A (en) 1977-10-11 1977-10-11 Production of metal pipe coated with plastics

Publications (1)

Publication Number Publication Date
JPS5455064A true JPS5455064A (en) 1979-05-01

Family

ID=14797375

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12088577A Pending JPS5455064A (en) 1977-10-11 1977-10-11 Production of metal pipe coated with plastics

Country Status (1)

Country Link
JP (1) JPS5455064A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5610422A (en) * 1979-07-06 1981-02-02 Ube Ind Ltd Method of sheathing steel pipe

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4925175A (en) * 1972-06-30 1974-03-06
JPS4930695A (en) * 1972-07-25 1974-03-19

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4925175A (en) * 1972-06-30 1974-03-06
JPS4930695A (en) * 1972-07-25 1974-03-19

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5610422A (en) * 1979-07-06 1981-02-02 Ube Ind Ltd Method of sheathing steel pipe

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