Square bent steel pipe
A technology for square tubes and steel tubes, applied in the field of radiator manufacturing, can solve problems such as damage to the corners of square steel tubes, and achieve the effects of small bending damage ratio, easy fixation, and easy transportation.
Inactive Publication Date: 2016-09-07
天津金立盛业有限公司
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Problems solved by technology
[0003] In view of this, the present invention aims to propose a square bent steel pipe to solve the problem that the corners of the square steel pipe are prone to damage during the bending process
Method used
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[0019] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.
[0020] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus should not be construed as limiting the invention. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should not be understood ...
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The invention provides a square bent steel pipe. The square bent steel pipe comprises a square pipe wall; a pipe wall inner cavity of the square pipe wall is square; four external edges of the square pipe wall are provided with chamfering angles; multiple annular grooves are preset in the bent place of the square pipe wall; the sections of the annular grooves are rectangular; the depths of the annular grooves are 20-40% of the thickness of the square pipe wall; the widths of the annular grooves are 1.2-1.5 times of the depths; an outer side thickening part is preset on the outer side of the bent place of the square pipe wall, and includes a rectangular bottom and an arched top; the rectangular bottom is embedded in the square pipe wall; and the embedding depth of the rectangular bottom is 40-50% of the thickness of the square pipe wall. The square bent steel pipe has the following advantages: the damage preventing treatment is performed for the inner side and the outer side of the bent place of the square bent steel pipe through such multiple methods as the annular grooves, sealing rubber strips, the outer side thickening part and metal net ribs; and the square bent steel pipe has such advantages as easier bending, consistent bending effect, low bending damage ratio and good sealing performance.
Description
technical field [0001] The invention belongs to the technical field of radiator production and manufacturing, and in particular relates to a square bent steel pipe. Background technique [0002] The use of radiators in northern heating areas has become very common. The steel pipes used in existing radiators are usually circular or oval in cross-section. Square pipes are rarely used due to their special shape. However, square pipes are easy to stack and not easy to dump. It has the advantages of easy transportation, more convenient assembly and docking of radiators, etc., and has certain development potential. However, square tubes are more prone to bending damage than circular or oval tubes when bending. Bending steel pipes are further improved and perfected. Contents of the invention [0003] In view of this, the present invention aims to provide a square bent steel pipe to solve the problem that the corners of the square steel pipe are easily damaged during the bending ...
Claims
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IPC IPC(8): F28D1/04F28F1/04
CPCF28D1/04F28F1/04
Inventor 刘茂柏
Owner 天津金立盛业有限公司