FR441029A - Improvements in the manufacture of seamless tubes - Google Patents

Improvements in the manufacture of seamless tubes

Info

Publication number
FR441029A
FR441029A FR441029DA FR441029A FR 441029 A FR441029 A FR 441029A FR 441029D A FR441029D A FR 441029DA FR 441029 A FR441029 A FR 441029A
Authority
FR
France
Prior art keywords
manufacture
seamless tubes
seamless
tubes
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
Other languages
French (fr)
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.)
PITTSBURG STEEL PRODUCTS COMPA
Original Assignee
PITTSBURG STEEL PRODUCTS COMPA
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 PITTSBURG STEEL PRODUCTS COMPA filed Critical PITTSBURG STEEL PRODUCTS COMPA
Application granted granted Critical
Publication of FR441029A publication Critical patent/FR441029A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B17/00—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling
    • B21B17/08—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling with mandrel having one or more protrusions, i.e. only the mandrel plugs contact the rolled tube; Press-piercing mills
    • B21B17/12—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling with mandrel having one or more protrusions, i.e. only the mandrel plugs contact the rolled tube; Press-piercing mills in a discontinuous process, e.g. plug-rolling mills
FR441029D 1912-03-06 1912-03-06 Improvements in the manufacture of seamless tubes Expired FR441029A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR441029T 1912-03-06

Publications (1)

Publication Number Publication Date
FR441029A true FR441029A (en) 1912-07-27

Family

ID=1482328

Family Applications (1)

Application Number Title Priority Date Filing Date
FR441029D Expired FR441029A (en) 1912-03-06 1912-03-06 Improvements in the manufacture of seamless tubes

Country Status (1)

Country Link
FR (1) FR441029A (en)

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