GB1453233A - Steel reinforcement bars - Google Patents

Steel reinforcement bars

Info

Publication number
GB1453233A
GB1453233A GB1474074A GB1474074A GB1453233A GB 1453233 A GB1453233 A GB 1453233A GB 1474074 A GB1474074 A GB 1474074A GB 1474074 A GB1474074 A GB 1474074A GB 1453233 A GB1453233 A GB 1453233A
Authority
GB
United Kingdom
Prior art keywords
bar
twisting
cold
axis
steel reinforcement
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
GB1474074A
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.)
British Steel Corp
Original Assignee
British Steel Corp
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 British Steel Corp filed Critical British Steel Corp
Priority to GB1474074A priority Critical patent/GB1453233A/en
Publication of GB1453233A publication Critical patent/GB1453233A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D11/00—Bending not restricted to forms of material mentioned in only one of groups B21D5/00, B21D7/00, B21D9/00; Bending not provided for in groups B21D5/00 - B21D9/00; Twisting
    • B21D11/14—Twisting
    • B21D11/15—Reinforcing rods for concrete

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Heat Treatment Of Steel (AREA)

Abstract

1453233 Twisting reinforcement bars BRITISH STEEL CORP 26 March 1975 [3 April 1974] 14740/74 Heading B3E A method of cold working a steel reinforcement bar comprises cold twisting a ribbed steel reinforcement bar about its axis through a plurality of turns in one direction and subsequently cold twisting the bar about its axis through a plurality of turns in the opposite direction. The bar may have a round or polygonal cross-section and ribs which are oblique to the bar axis in the as-rolled condition. The bar may be returned to substantially its original configuration after cold working. The greatest extent to which the bar is twisted corresponds to a pitch of twist to nominal bar diameter ratio of from 7À5 to 27À2. Cold twisting can be performed at 300 to 375 r.p.m. The steel contains up to 0À25% C. and 0À5 to 0À9% Mn.
GB1474074A 1974-04-03 1974-04-03 Steel reinforcement bars Expired GB1453233A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1474074A GB1453233A (en) 1974-04-03 1974-04-03 Steel reinforcement bars

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1474074A GB1453233A (en) 1974-04-03 1974-04-03 Steel reinforcement bars

Publications (1)

Publication Number Publication Date
GB1453233A true GB1453233A (en) 1976-10-20

Family

ID=31198376

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1474074A Expired GB1453233A (en) 1974-04-03 1974-04-03 Steel reinforcement bars

Country Status (1)

Country Link
GB (1) GB1453233A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0080833A1 (en) * 1981-11-18 1983-06-08 Allied Steel Limited Steel reinforcement rod and process for producing this rod

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0080833A1 (en) * 1981-11-18 1983-06-08 Allied Steel Limited Steel reinforcement rod and process for producing this rod

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee