JPS6456888A - Corrosion preventing method for steel casing pipe and buried pipe using the same - Google Patents

Corrosion preventing method for steel casing pipe and buried pipe using the same

Info

Publication number
JPS6456888A
JPS6456888A JP62214802A JP21480287A JPS6456888A JP S6456888 A JPS6456888 A JP S6456888A JP 62214802 A JP62214802 A JP 62214802A JP 21480287 A JP21480287 A JP 21480287A JP S6456888 A JPS6456888 A JP S6456888A
Authority
JP
Japan
Prior art keywords
pipe
casing pipe
conductive film
steel casing
flows
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
JP62214802A
Other languages
Japanese (ja)
Other versions
JPH0645905B2 (en
Inventor
Akihiro Tamada
Toshiyuki Yasui
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 JP62214802A priority Critical patent/JPH0645905B2/en
Publication of JPS6456888A publication Critical patent/JPS6456888A/en
Publication of JPH0645905B2 publication Critical patent/JPH0645905B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
  • Prevention Of Electric Corrosion (AREA)

Abstract

PURPOSE:To prevent the corrosion of a steel casing pipe simultaneously with a buried pipe by applying an electrically conductive film on the inner surface of the steel casing pipe with an anticorrosive current inlet provided on the outer surface. CONSTITUTION:For example, the outer surface of the steel casing pipe 1 except both ends is coated with an insulating coating 2 of polyethylene, and the conductive film 3 is applied on the inner surface. The outer surface of a buried transport pipe 4 is covered with a polyethylene coating 5, and the pipe 4 is electrolytically protected by an Mg anode 6. The anticorrosive current from the Mg anode 6 flows in from the uncoated part 7 of the casing pipe 1, flows through the casing pipe 1, then flows out from the conductive film 3, and flows into the transport pipe 4 through ground water. Consequently, the electric potential of the uncoated part 7 of the casing pipe 1 and transport pipe 4 is kept low, and the pipes are electrolytically protected. By this method, although an electric current flows out from the inner surface of the casing pipe 1, the reaction with the ground water and contained component is not caused since the conductive film 3 is applied, and the corrosion and electrolytic corrosion are never caused.
JP62214802A 1987-08-28 1987-08-28 Steel casing pipe and method for preventing corrosion of buried pipe using the same Expired - Lifetime JPH0645905B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62214802A JPH0645905B2 (en) 1987-08-28 1987-08-28 Steel casing pipe and method for preventing corrosion of buried pipe using the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62214802A JPH0645905B2 (en) 1987-08-28 1987-08-28 Steel casing pipe and method for preventing corrosion of buried pipe using the same

Publications (2)

Publication Number Publication Date
JPS6456888A true JPS6456888A (en) 1989-03-03
JPH0645905B2 JPH0645905B2 (en) 1994-06-15

Family

ID=16661767

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62214802A Expired - Lifetime JPH0645905B2 (en) 1987-08-28 1987-08-28 Steel casing pipe and method for preventing corrosion of buried pipe using the same

Country Status (1)

Country Link
JP (1) JPH0645905B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04113088A (en) * 1990-09-04 1992-04-14 Nkk Corp Sheath tube for buried conduit
JPH07117091A (en) * 1993-10-26 1995-05-09 Shuji Ishihara Material pressure-introducing and heating device in rubber injection machine
JP2007204838A (en) * 2006-02-06 2007-08-16 Nippon Steel Engineering Co Ltd Electrolytic protection method for underground embedded structure and electrolytic protection structure
CN110594534A (en) * 2019-07-26 2019-12-20 中国市政工程中南设计研究总院有限公司 Insulating internal fixing support of prefabricated direct-buried steam heat-insulating pipe

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04113088A (en) * 1990-09-04 1992-04-14 Nkk Corp Sheath tube for buried conduit
JPH07117091A (en) * 1993-10-26 1995-05-09 Shuji Ishihara Material pressure-introducing and heating device in rubber injection machine
JP2007204838A (en) * 2006-02-06 2007-08-16 Nippon Steel Engineering Co Ltd Electrolytic protection method for underground embedded structure and electrolytic protection structure
CN110594534A (en) * 2019-07-26 2019-12-20 中国市政工程中南设计研究总院有限公司 Insulating internal fixing support of prefabricated direct-buried steam heat-insulating pipe

Also Published As

Publication number Publication date
JPH0645905B2 (en) 1994-06-15

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