JPS55158930A - Manufacture of reinforced plastic coated steel pipe - Google Patents

Manufacture of reinforced plastic coated steel pipe

Info

Publication number
JPS55158930A
JPS55158930A JP6493979A JP6493979A JPS55158930A JP S55158930 A JPS55158930 A JP S55158930A JP 6493979 A JP6493979 A JP 6493979A JP 6493979 A JP6493979 A JP 6493979A JP S55158930 A JPS55158930 A JP S55158930A
Authority
JP
Japan
Prior art keywords
reinforcing material
plastic
pipe
crosshead die
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
JP6493979A
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 JP6493979A priority Critical patent/JPS55158930A/en
Publication of JPS55158930A publication Critical patent/JPS55158930A/en
Pending legal-status Critical Current

Links

Landscapes

  • Laminated Bodies (AREA)
  • Moulding By Coating Moulds (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

PURPOSE: To manufacture a subject pipe being excellent in a shockproof property, by a method wherein plastic coating is performed in two installations by means of a crosshead die type extruder, and a process, in which a beltlike reinforced material is wound in a spiral around an intermediate layer, is in-lined for continuous operation.
CONSTITUTION: An unprocessed steel pipe runs in the arrow direction at a constant speed, and said pipe is first covered as an inner layer with a molten plastic 4 extruded in the cylindrical shape from a crosshead die 2. A beltlike reinforcing material 6 is wound spirally around an outer surface of the plastic 4 by means of a rotary drum 8, and a molten plastic 5 extruded in the cylindrical shape through a crosshead die 3 is then coated as an outer layer on an outer surface of the reinforcing material 6. This permits winding of the reinforcing material 6 around the inner layer being still in a soft state and permits coating of the plastic 5 being in a molten state on the reinforcing material 6. And thereby the inner and outer layer plastics 4 and 5 monolithically twined together through the medium of a gap provided by the reinforcing material 6 is adhered to an original pipe 1. Glass fiber mats, metal meshes, etc. can be used as said reinforcing material 6.
COPYRIGHT: (C)1980,JPO&Japio
JP6493979A 1979-05-28 1979-05-28 Manufacture of reinforced plastic coated steel pipe Pending JPS55158930A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6493979A JPS55158930A (en) 1979-05-28 1979-05-28 Manufacture of reinforced plastic coated steel pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6493979A JPS55158930A (en) 1979-05-28 1979-05-28 Manufacture of reinforced plastic coated steel pipe

Publications (1)

Publication Number Publication Date
JPS55158930A true JPS55158930A (en) 1980-12-10

Family

ID=13272495

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6493979A Pending JPS55158930A (en) 1979-05-28 1979-05-28 Manufacture of reinforced plastic coated steel pipe

Country Status (1)

Country Link
JP (1) JPS55158930A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58118211A (en) * 1982-01-07 1983-07-14 Eagle Ind Co Ltd Corrosion protective lining of stern tube

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58118211A (en) * 1982-01-07 1983-07-14 Eagle Ind Co Ltd Corrosion protective lining of stern tube

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