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JPS55124622A - Production of plastic-covered steel pipe for concrete coating - Google Patents

Production of plastic-covered steel pipe for concrete coating

Info

Publication number
JPS55124622A
JPS55124622A JP3310479A JP3310479A JPS55124622A JP S55124622 A JPS55124622 A JP S55124622A JP 3310479 A JP3310479 A JP 3310479A JP 3310479 A JP3310479 A JP 3310479A JP S55124622 A JPS55124622 A JP S55124622A
Authority
JP
Japan
Prior art keywords
plastic
pipe
dies
metal pipe
production
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
JP3310479A
Other languages
Japanese (ja)
Inventor
Yoshihiro Tsutsui
Hiroshi Okada
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
Nippon Steel Corp
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 Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP3310479A priority Critical patent/JPS55124622A/en
Publication of JPS55124622A publication Critical patent/JPS55124622A/en
Pending legal-status Critical Current

Links

Landscapes

  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

PURPOSE: To obtain a plastic-covered metal pipe which enables the combining of concrete or the like firmly on the outer surface with a rough coating formed by spirally wrapping metal pipe with a plastic belt-like body extruded from a dies with a special-shaped delivery port.
CONSTITUTION: A metal pipe 4 is placed on a turning rolls 5 and 5' arranged slant to the pipe axis. A half-melted plastic belt-like material 2 is discharged on the circumference of the metal pipe 4 from the dies 1 of an extruder giving the pipe 4 the rotation around the pipe axis and axial transfer in such a manner as that it is continuously wrapped around the pipe partially overlapping to form a plastic coating. In this process, dies 1 concave and convex in the shape are used partially or entirely around the delivery port of the dies to form a concave or convex shape on the outer surface of the plastic cover.
COPYRIGHT: (C)1980,JPO&Japio
JP3310479A 1979-03-20 1979-03-20 Production of plastic-covered steel pipe for concrete coating Pending JPS55124622A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3310479A JPS55124622A (en) 1979-03-20 1979-03-20 Production of plastic-covered steel pipe for concrete coating

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3310479A JPS55124622A (en) 1979-03-20 1979-03-20 Production of plastic-covered steel pipe for concrete coating

Publications (1)

Publication Number Publication Date
JPS55124622A true JPS55124622A (en) 1980-09-25

Family

ID=12377345

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3310479A Pending JPS55124622A (en) 1979-03-20 1979-03-20 Production of plastic-covered steel pipe for concrete coating

Country Status (1)

Country Link
JP (1) JPS55124622A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4929294A (en) * 1986-08-23 1990-05-29 Blome GmbH & Co. Kommanditgesellschaft, and Strabag Bau-Aktiengesellschaf t Method of creating profiling projections on plastic-covered steel parts

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4929294A (en) * 1986-08-23 1990-05-29 Blome GmbH & Co. Kommanditgesellschaft, and Strabag Bau-Aktiengesellschaf t Method of creating profiling projections on plastic-covered steel parts

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