JPS4431455Y1 - - Google Patents

Info

Publication number
JPS4431455Y1
JPS4431455Y1 JP1967081849U JP8184967U JPS4431455Y1 JP S4431455 Y1 JPS4431455 Y1 JP S4431455Y1 JP 1967081849 U JP1967081849 U JP 1967081849U JP 8184967 U JP8184967 U JP 8184967U JP S4431455 Y1 JPS4431455 Y1 JP S4431455Y1
Authority
JP
Japan
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
JP1967081849U
Other languages
Japanese (ja)
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 JP1967081849U priority Critical patent/JPS4431455Y1/ja
Publication of JPS4431455Y1 publication Critical patent/JPS4431455Y1/ja
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/12—Making tubes or metal hoses with helically arranged seams
    • B21C37/124—Making tubes or metal hoses with helically arranged seams the tubes having a special shape, e.g. with corrugated wall, flexible tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/12—Making tubes or metal hoses with helically arranged seams
    • B21C37/121—Making tubes or metal hoses with helically arranged seams with non-welded and non-soldered seams

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
JP1967081849U 1967-09-27 1967-09-27 Expired JPS4431455Y1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1967081849U JPS4431455Y1 (fr) 1967-09-27 1967-09-27

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1967081849U JPS4431455Y1 (fr) 1967-09-27 1967-09-27

Publications (1)

Publication Number Publication Date
JPS4431455Y1 true JPS4431455Y1 (fr) 1969-12-25

Family

ID=31813110

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1967081849U Expired JPS4431455Y1 (fr) 1967-09-27 1967-09-27

Country Status (1)

Country Link
JP (1) JPS4431455Y1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10195653B2 (en) 2011-09-20 2019-02-05 Keystone Tower Systems, Inc. Tapered structure construction

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10195653B2 (en) 2011-09-20 2019-02-05 Keystone Tower Systems, Inc. Tapered structure construction

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