A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
FORM ROLLING STEEL PIPE
To provide a form rolling steel pipe that alternately forms a cave-in part and a projecting part onto cross sections of the steel pipe barrel part by forming cave-in parts spirally and concavely along an outer peripheral surface of a hollow steel pipe barrel part, and that is excellent in an adhesive property and a bending property by forming a ratio of the projecting part length and the cave-in part length to 1:1.3 to 1:3.SOLUTION: A form rolling steel pipe 300, 500 is configured in which, by forming a cave-in part 303, 503 concavely while spirally continuing along an outer peripheral surface of a hollow steel pipe barrel part 301, 501, the cave-in part 303, 503 and a projecting part 305, 505 are alternately formed onto cross sections of the steel pipe barrel part 301, 501, and a ratio of a length D1 of the projecting part 305, 505 to a length D2 of the cave-in part 303, 503 on the cross sections of the steel pipe barrel part 301, 501 is 1:1.3 to 1:3.SELECTED DRAWING: Figure 1
【課題】中空の鋼管胴体部の外周面に沿って螺旋状に凹状に陥没部を形成することによって、鋼管胴体部の断面に陥没部と突出部が交互に形成され、突出部の長さと陥没部の長さとの比率を１：１．３乃至１：３に形成することによって、付着性及び折り曲げ性に優れた転造鋼管を提供する。【解決手段】転造鋼管３００、５００であって、中空の鋼管胴体部３０１、５０１の外周面に沿って螺旋状に連続しながら凹状に陥没部３０３、５０３が形成されることによって、前記鋼管胴体部３０１、５０１の断面に前記陥没部３０３、５０３と突出部３０５、５０５が交互に形成され、前記鋼管胴体部３０１、５０１の断面における前記突出部３０５、５０５の長さＤ１と前記陥没部３０３、５０３の長さＤ２に対する比率は、１：１．３乃至１：３である転造鋼管を構成する。【選択図】図１
FORM ROLLING STEEL PIPE
To provide a form rolling steel pipe that alternately forms a cave-in part and a projecting part onto cross sections of the steel pipe barrel part by forming cave-in parts spirally and concavely along an outer peripheral surface of a hollow steel pipe barrel part, and that is excellent in an adhesive property and a bending property by forming a ratio of the projecting part length and the cave-in part length to 1:1.3 to 1:3.SOLUTION: A form rolling steel pipe 300, 500 is configured in which, by forming a cave-in part 303, 503 concavely while spirally continuing along an outer peripheral surface of a hollow steel pipe barrel part 301, 501, the cave-in part 303, 503 and a projecting part 305, 505 are alternately formed onto cross sections of the steel pipe barrel part 301, 501, and a ratio of a length D1 of the projecting part 305, 505 to a length D2 of the cave-in part 303, 503 on the cross sections of the steel pipe barrel part 301, 501 is 1:1.3 to 1:3.SELECTED DRAWING: Figure 1
【課題】中空の鋼管胴体部の外周面に沿って螺旋状に凹状に陥没部を形成することによって、鋼管胴体部の断面に陥没部と突出部が交互に形成され、突出部の長さと陥没部の長さとの比率を１：１．３乃至１：３に形成することによって、付着性及び折り曲げ性に優れた転造鋼管を提供する。【解決手段】転造鋼管３００、５００であって、中空の鋼管胴体部３０１、５０１の外周面に沿って螺旋状に連続しながら凹状に陥没部３０３、５０３が形成されることによって、前記鋼管胴体部３０１、５０１の断面に前記陥没部３０３、５０３と突出部３０５、５０５が交互に形成され、前記鋼管胴体部３０１、５０１の断面における前記突出部３０５、５０５の長さＤ１と前記陥没部３０３、５０３の長さＤ２に対する比率は、１：１．３乃至１：３である転造鋼管を構成する。【選択図】図１
FORM ROLLING STEEL PIPE
転造鋼管
JEONG JAEHYUN (author) / LEE JEONG KWON (author)
2023-12-21
Patent
Electronic Resource
Japanese
IPC:
E04C
STRUCTURAL ELEMENTS
,
Bauelemente
/
B21C
MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING
,
Herstellen von Blechen, Metalldraht, -stangen, -rohren Metallprofilen oder Halbzeugen auf andere Weise als durch Walzen
/
B21H
MAKING PARTICULAR METAL OBJECTS BY ROLLING, e.g. SCREWS, WHEELS, RINGS, BARRELS, BALLS
,
Herstellen besonderer Gegenstände aus Metall durch Walzen, z.B. Schrauben, Räder, Ringe, Büchsen, Kugeln
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