DE3426224C2 - - Google Patents

Info

Publication number
DE3426224C2
DE3426224C2 DE3426224A DE3426224A DE3426224C2 DE 3426224 C2 DE3426224 C2 DE 3426224C2 DE 3426224 A DE3426224 A DE 3426224A DE 3426224 A DE3426224 A DE 3426224A DE 3426224 C2 DE3426224 C2 DE 3426224C2
Authority
DE
Germany
Prior art keywords
mandrel
rolling mill
diescher
mill
elongation
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.)
Revoked
Application number
DE3426224A
Other languages
German (de)
English (en)
Other versions
DE3426224A1 (de
Inventor
Dezsoe Albert Pozsgay
Robert John Pittsburgh Pa. Us Rau
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.)
Italimpianti of America Inc
Original Assignee
Italimpianti of America Inc
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 Italimpianti of America Inc filed Critical Italimpianti of America Inc
Publication of DE3426224A1 publication Critical patent/DE3426224A1/de
Application granted granted Critical
Publication of DE3426224C2 publication Critical patent/DE3426224C2/de
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B23/00—Tube-rolling not restricted to methods provided for in only one of groups B21B17/00, B21B19/00, B21B21/00, e.g. combined processes planetary tube rolling, auxiliary arrangements, e.g. lubricating, special tube blanks, continuous casting combined with tube rolling

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
DE19843426224 1983-08-02 1984-07-17 Walzwerk fuer nahtlose rohre Granted DE3426224A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US51956483A 1983-08-02 1983-08-02

Publications (2)

Publication Number Publication Date
DE3426224A1 DE3426224A1 (de) 1985-02-21
DE3426224C2 true DE3426224C2 (it) 1992-01-02

Family

ID=24068848

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19843426224 Granted DE3426224A1 (de) 1983-08-02 1984-07-17 Walzwerk fuer nahtlose rohre

Country Status (6)

Country Link
JP (1) JPS6076207A (it)
CA (1) CA1247885A (it)
DE (1) DE3426224A1 (it)
FR (1) FR2550719B1 (it)
GB (1) GB2144352B (it)
ZA (1) ZA845090B (it)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015212905A1 (de) * 2015-07-09 2017-01-12 Sms Group Gmbh Vorrichtung und Verfahren zur Herstellung nahtloser Rohre

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101927260A (zh) * 2010-07-13 2010-12-29 江苏振达钢管集团 一种无缝钢管热轧多次穿孔生产工艺

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT141728B (de) * 1931-04-04 1935-05-10 Diescher & Sons S Verfahren zur Herstellung nahtloser Rohre.
US1949933A (en) * 1932-03-25 1934-03-06 Grasselli Chemical Co Sulphur burner
US1946933A (en) * 1932-03-31 1934-02-13 Diescher Tube Mills Inc Tube-making apparatus
US1951348A (en) * 1932-09-02 1934-03-20 Diescher Tube Mills Inc Method of cross-rolling
US2006336A (en) * 1933-05-22 1935-07-02 Diescher Tube Mills Inc Tube elongating apparatus and method
US2048925A (en) * 1933-10-19 1936-07-28 Diescher Tube Mills Inc Tube manufacturing apparatus
US3593553A (en) * 1968-07-12 1971-07-20 Blaw Knox Co Method and apparatus for rolling tubes
GB1575859A (en) * 1977-04-18 1980-10-01 Aetna Standard Eng Co Process for the production of seamless tubular products
FR2443884A1 (fr) * 1978-12-15 1980-07-11 Vallourec Fabrication de tubes sans soudure de forts diametres
GB2089702B (en) * 1980-12-19 1984-08-30 Nippon Kokan Kk Method of manufacturing seamless steel pipes
GB2099346B (en) * 1981-04-16 1985-03-13 Head Wrightson Mach Tube rolling mill

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102015212905A1 (de) * 2015-07-09 2017-01-12 Sms Group Gmbh Vorrichtung und Verfahren zur Herstellung nahtloser Rohre
DE102015212905B4 (de) * 2015-07-09 2020-10-01 Sms Group Gmbh Vorrichtung und Verfahren zur Herstellung nahtloser Rohre

Also Published As

Publication number Publication date
CA1247885A (en) 1989-01-03
GB8416450D0 (en) 1984-08-01
DE3426224A1 (de) 1985-02-21
GB2144352B (en) 1986-06-04
GB2144352A (en) 1985-03-06
FR2550719B1 (fr) 1987-08-07
FR2550719A1 (fr) 1985-02-22
ZA845090B (en) 1985-05-29
JPH0224162B2 (it) 1990-05-28
JPS6076207A (ja) 1985-04-30

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
8128 New person/name/address of the agent

Representative=s name: TUERK, D., DIPL.-CHEM. DR.RER.NAT. GILLE, C., DIPL

8127 New person/name/address of the applicant

Owner name: ITALIMPIANTI OF AMERICA INC., CORAOPOLIS, PA., US

8128 New person/name/address of the agent

Representative=s name: SCHWABE, H., DIPL.-ING. SANDMAIR, K., DIPL.-CHEM.

8128 New person/name/address of the agent

Representative=s name: TUERK, D., DIPL.-CHEM. DR.RER.NAT. GILLE, C., DIPL

D2 Grant after examination
8363 Opposition against the patent
8331 Complete revocation