JPS56168902A - Manufacture of pipe having nonuniform wall thickness along longitudinal direction - Google Patents

Manufacture of pipe having nonuniform wall thickness along longitudinal direction

Info

Publication number
JPS56168902A
JPS56168902A JP7010580A JP7010580A JPS56168902A JP S56168902 A JPS56168902 A JP S56168902A JP 7010580 A JP7010580 A JP 7010580A JP 7010580 A JP7010580 A JP 7010580A JP S56168902 A JPS56168902 A JP S56168902A
Authority
JP
Japan
Prior art keywords
mandrel
walled part
rolling
thick
thin
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
JP7010580A
Other languages
English (en)
Inventor
Tatsuya Mochizuki
Yoshinori Komiya
Akiyoshi Matsushita
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 JP7010580A priority Critical patent/JPS56168902A/ja
Publication of JPS56168902A publication Critical patent/JPS56168902A/ja
Pending legal-status Critical Current

Links

JP7010580A 1980-05-28 1980-05-28 Manufacture of pipe having nonuniform wall thickness along longitudinal direction Pending JPS56168902A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7010580A JPS56168902A (en) 1980-05-28 1980-05-28 Manufacture of pipe having nonuniform wall thickness along longitudinal direction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7010580A JPS56168902A (en) 1980-05-28 1980-05-28 Manufacture of pipe having nonuniform wall thickness along longitudinal direction

Publications (1)

Publication Number Publication Date
JPS56168902A true JPS56168902A (en) 1981-12-25

Family

ID=13421919

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7010580A Pending JPS56168902A (en) 1980-05-28 1980-05-28 Manufacture of pipe having nonuniform wall thickness along longitudinal direction

Country Status (1)

Country Link
JP (1) JPS56168902A (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58218308A (ja) * 1982-06-12 1983-12-19 Sumitomo Metal Ind Ltd ピルガ−ミル
WO2021044689A1 (ja) * 2019-09-06 2021-03-11 株式会社三五 差厚パイプの押出成形方法及び差厚パイプの押出成形装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58218308A (ja) * 1982-06-12 1983-12-19 Sumitomo Metal Ind Ltd ピルガ−ミル
WO2021044689A1 (ja) * 2019-09-06 2021-03-11 株式会社三五 差厚パイプの押出成形方法及び差厚パイプの押出成形装置
US12214395B2 (en) 2019-09-06 2025-02-04 Sango Co., Ltd. Extrusion molding method for differential thickness pipe and extrusion molding apparatus for differential thickness pipe

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