JPS646477Y2 - - Google Patents

Info

Publication number
JPS646477Y2
JPS646477Y2 JP1980057197U JP5719780U JPS646477Y2 JP S646477 Y2 JPS646477 Y2 JP S646477Y2 JP 1980057197 U JP1980057197 U JP 1980057197U JP 5719780 U JP5719780 U JP 5719780U JP S646477 Y2 JPS646477 Y2 JP S646477Y2
Authority
JP
Japan
Prior art keywords
layer
water supply
rust
chemical conversion
threaded
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.)
Expired
Application number
JP1980057197U
Other languages
English (en)
Japanese (ja)
Other versions
JPS56157496U (enrdf_load_stackoverflow
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 filed Critical
Priority to JP1980057197U priority Critical patent/JPS646477Y2/ja
Publication of JPS56157496U publication Critical patent/JPS56157496U/ja
Application granted granted Critical
Publication of JPS646477Y2 publication Critical patent/JPS646477Y2/ja
Expired legal-status Critical Current

Links

Landscapes

  • Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
  • Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
JP1980057197U 1980-04-24 1980-04-24 Expired JPS646477Y2 (enrdf_load_stackoverflow)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1980057197U JPS646477Y2 (enrdf_load_stackoverflow) 1980-04-24 1980-04-24

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1980057197U JPS646477Y2 (enrdf_load_stackoverflow) 1980-04-24 1980-04-24

Publications (2)

Publication Number Publication Date
JPS56157496U JPS56157496U (enrdf_load_stackoverflow) 1981-11-24
JPS646477Y2 true JPS646477Y2 (enrdf_load_stackoverflow) 1989-02-20

Family

ID=29651703

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1980057197U Expired JPS646477Y2 (enrdf_load_stackoverflow) 1980-04-24 1980-04-24

Country Status (1)

Country Link
JP (1) JPS646477Y2 (enrdf_load_stackoverflow)

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5036047A (enrdf_load_stackoverflow) * 1973-08-01 1975-04-04

Also Published As

Publication number Publication date
JPS56157496U (enrdf_load_stackoverflow) 1981-11-24

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