JP3322864B2 - Identification display method of square steel pipe and steel pipe having the identification display - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an identification display method for identifying the quality and the like of a square steel pipe used as a steel frame building or a steel column of a building, and a square type provided with such identification display. Steel pipes, especially square or rectangular for architectural cross sections
The present invention relates to a square steel pipe.

[0002]

2. Description of the Related Art Used in steel-framed buildings or structures
There have been various types of square steel pipes,
In recent years, products having seismic resistance developed for earthquake countermeasures have been commercialized. Then, in order to identify and indicate the steel pipe having the earthquake resistance, for example, in the longitudinal direction of the outer surface of the steel pipe, a trademark, a type (quality indication) of the type of the steel pipe, a dimension (for example, the length of the side) X side length x thickness x length), year of manufacture, factory abbreviation, control number, pipe number, etc., followed by the trademark, etc., which are usually repeated in turn.

[0003]

In the above-mentioned conventional display method, when a square steel pipe having earthquake resistance is cut to an appropriate length and used, or when this steel pipe is used as a steel pole in a building, For example, when a diaphragm is welded to this steel pipe in order to join the cross beams, there is a problem that the quality indication and the like of the steel pipe may be hidden or may not be visible due to cutting. Therefore, in the present invention, a corner provided with a specific quality indication is provided.
In type steel tube, and viewing the quality indication easily from the outside, to provide a method of providing an identification which can be identified as the problem. It is another object of the present invention to provide a square steel pipe provided with the identification. The identification display method of the square steel pipe according to the present invention, that square steel pipes having the identification by using this method is prepared, in which stand in relation.

[0004]

Means for Solving the Problems In order to solve the above problems, a first aspect of the present invention is to provide at least one square steel pipe.
About the position deviated from the center position in the width direction of the side,
Identification by color continuously or intermittently in the longitudinal direction of the
And all or one or both end faces of the steel pipe
Even if a part of the steel pipe is cut into appropriate lengths, or if a part of the outer surface of the steel pipe is concealed by connecting a diaphragm or the like to the steel pipe, the identification mark is provided even in a part. This is an identification display method for a square steel pipe, wherein the identification display is in an appearing state. The colors referred to here include both chromatic and achromatic colors.

[0005] According to this identification display method, even when the steel pipe is cut to an appropriate length, the identification display appears in any of the cut portions, or the steel pipe is used as a pillar of a building or a building. When the skeleton is completed by fixing a cross beam (for example, an I-shaped rope) via a diaphragm, this identification mark is visible from the outside without being hidden by the diaphragm, and is used as a steel pillar of the skeleton. For example, it is possible to easily visually recognize whether or not a steel pipe having earthquake resistance is used, and it is possible to easily perform a building confirmation inspection and the like. In addition, of steel pipe
Identification marking on one or both end faces
This steel pipe has completed the manufacturing process and
Even if they are stacked and stored on-site,
The steel pipe is easily made of, for example,
The product can be easily visually recognized.

[0006] The two ones of the present invention on the first aspect, the identification, rectangular, characterized in that it consists of lines in the longitudinal direction of the predetermined width provided throughout the steel pipe <br / > This is a method for identifying and indicating steel pipes.

[0007] According to this identification display method, it is possible to provide an identification display so as to draw a so-called line over the entire length of the outer surface of the steel pipe. Can be applied to the outer surface of the steel pipe.

A third aspect of the present invention is the above-described first or second aspect.
In the invention according to the second aspect, the identification display method is characterized in that the identification display is made of a rust preventive paint. Since rust preventive paint is used as the identification mark, the rust preventive paint is applied to the entire framework after the building framework is completed. It is only applied and does not cause any obstacles in terms of the effect of rust prevention. In other words, if a paint that does not have a normal rust-preventing effect is used as the identification mark, there is a possibility that a problem may occur in the rust-prevention effect at the location of the identification mark, but by using the rust-preventive paint,
This problem can be solved.

[0009] A fourth aspect of the present invention is to reduce the number of square steel pipes.
At least from the center position in the width direction on one side.
Color in the longitudinal direction of the side, continuously or intermittently
An identification mark shall be provided and one or both ends of the steel pipe shall be
Even if the steel pipe is cut into appropriate lengths, or if a part of the outer surface of the steel pipe is concealed by joining a diaphragm or the like to this steel pipe, the whole or a part of the steel pipe is provided with color identification. , A steel pipe having an identification display characterized in that the identification display appears. With this steel pipe, the same effect as in the first invention is exhibited.

A fifth aspect of the present invention is the steel pipe according to the fourth aspect , wherein the identification mark comprises a line of a predetermined width provided over the entire length of the steel pipe. It is. According to this invention, the same effect as in the second invention is exerted.

A sixth aspect of the present invention is the fourth or the fourth aspect.
In the invention according to the fifth aspect , the identification mark is indicated by a rust preventive paint, and is a steel pipe having an identification mark.
Thereby, the same effect as in the third aspect is exerted.

[0012]

Embodiments of the present invention will be described below with reference to the accompanying drawings. The accompanying drawings all illustrate embodiments of the present invention. Also book
The present invention is applied to a square steel pipe. FIG. 1 is a partially cutaway perspective view of a rectangular steel pipe having an identification mark according to the present invention. As an example, the cross section is substantially square, and the length of one side is 40.
FIG. 1 shows a steel tube 10 for building structure having a seismic resistance of 0 mm × 400 mm, a thickness of 16 mm, and a length of 8 m. A rust-preventive paint is applied to the entire both end faces 11 and 12 of the steel pipe 10 (the right end face 12 is not shown in the drawing). Further, a width of about 15 mm is set at a position deviated from a center position (indicated by a dashed line L) of one side surface 15 of the steel pipe 10 in the width direction w.
The degree line 16 is provided continuously over the entire length of the side surface 15. The line 16 is provided substantially in parallel with the axis of the steel pipe 10 and, like the end faces 11 and 12 of the steel pipe 10, is coated with a rust preventive paint and displayed.

The line 16 may be shifted to the upper side or the lower side of the chain line L in the drawing, and may be provided on at least one of the four side surfaces of the steel pipe 10. Also, it is needless to say that the information may be displayed on all four sides. The width of the line 16 can be set completely freely, but is approximately 15 mm as in the above-described embodiment so that the line 16 can be visually recognized from a position distant to some extent.
It is desirable to have a width of the order. The kind of the rust preventive paint is not particularly limited, and various kinds of paints currently used can be used. Further, the color of the color is usually orange or reddish brown. Therefore, in FIG. 1, the shaded portion (usually showing orange or reddish brown) is the portion where the identification display of the present invention is given. In this embodiment, the identification mark is provided over the entire length between both ends in the longitudinal direction of the steel pipe 10, but it is not always necessary to provide the identification mark over the entire length between the both ends. Needless to say, the display may be made shorter.

FIG. 2 is an explanatory view showing a state in which various diaphragms are welded and joined to the steel pipe 10 provided with the identification mark of the present invention, in which (A) is a through diaphragm and (B) is an outer diaphragm. (C) illustrates a state in which the inner diaphragm is welded and joined, respectively. As can be seen from these figures, the line 16 for identification display displayed on the steel pipe 10 can be visually confirmed from the outside even when each of the diaphragms 20, 21, and 22 is welded to the steel pipe 10. Becomes This is because the identification display line 16 is provided at a position slightly shifted or deviated from the center position in the width direction (lateral direction) of one side surface of the steel pipe 10. The cross beam made of I-shaped steel is joined and fixed to these diaphragms.

FIG. 3 is a side view showing one side surface of the square steel pipe 10 having various identifications according to the present invention. In FIG. 3A, an identification mark 16a is obtained by applying a rust-preventive paint to a portion below a central portion of one side surface 15 of the steel pipe 10 in the width direction (vertical direction). As a result, even when a diaphragm or the like is welded to the steel pipe 10, the identification mark 16a is not hidden, and even if the steel pipe 10 is cut at any place, the identification mark 16a is attached to each cut steel pipe. 16a remains displayed.

In FIG. 3B, an identification mark 16b having a line of a predetermined width is provided over the entire length of the upper side of one side surface 15 of the steel pipe 10 in the drawing. The identification mark 16b is also one coated with a rust preventive paint. By this identification mark 16b, even if the steel pipe 10 is cut to an appropriate length or the diaphragm is welded, the identification mark 16b can be visually recognized from the outside.

In FIG. 3C, a line of a predetermined width that is obliquely inclined at an upper portion of the side surface 15 of the steel pipe 10 in the drawing is identified by an identification mark 16 over the entire length of the steel pipe.
This is provided as c. The identification mark 16c is also obtained by applying a rust preventive paint. Thereby, similarly to the above-described identification, even when the steel pipe 10 is used as a building iron pole, the identification can be visually recognized from the outside.

In the case shown in FIG. 3D, a rust preventive paint is applied to the upper part of the diagonal line on one side surface 15 of the steel pipe 10, and an identification mark 16d is provided. Even in the case of the identification mark 16d, the identification mark 16d can be confirmed from outside even if the steel pipe is cut at any part or the diaphragm is welded.

In the case shown in FIG. 3 (E), the rust-preventive paint is applied only to the upper part of one side surface 15 of the steel pipe 10 in the figure, substantially above the diagonal line, and the identification mark 16
e is formed. Also in the case of the identification mark 16e, when the steel pipe is used as an iron pole of a building, the identification mark 16e can be easily confirmed from the outside.

FIG. 4 is an explanatory view showing a state in which the steel pipe 10 shown in FIG. 1 according to the present invention has been completed in all the manufacturing steps, is piled up in the storage place, and is stored. The steel pipe 10 is completed in its manufacturing process, and is sequentially stacked and stored. The end faces 11, 12 and the identification display lines 16 provided on one side face 15 of each of the steel pipes 10 are connected to the both ends. It can be easily visually recognized from the surface side and the side surface side, and it is possible to determine at a glance that the stacked steel pipes are, for example, products having earthquake resistance.

Next, the method for identifying and indicating the steel pipe 10 according to the present invention will be described. For example, first, a one-seam welded steel pipe is manufactured from a hot-rolled coil purchased from a blast furnace manufacturer by high-frequency resistance welding or the like, and this is continuously sized. The steel pipe is formed into a square cross-section and cut into a predetermined length to complete the steel pipe. After that, the rust-preventive paint can be applied to one side surface by a spraying method to a predetermined width, in this embodiment, to a width of about 15 mm while the transport device is transported. The rust preventive paint can be applied by a roll or the like, and the method of applying the rust preventive paint can be freely selected. Further, the steel pipe 10
Of course, it is only necessary to apply the rust-preventive paint to all or any part of the end faces, and it is also possible to apply the coating to both end faces or only one of the end faces.

Although the embodiments have been described above, the embodiments of the present invention can be modified as follows . Various existing rust preventive paints or rust preventives can be used for identification, and are not limited to specific ones. It is preferred to use. This is because the identification display portion is only painted twice, no color unevenness occurs, and the rust prevention effect is the same. Instead of using the rust-preventive paint as described above, it is also possible to use a variety of ordinary paints to provide a desired color identification. However, if taking into account the effect of rust prevention on iron columns, or taking into account the prevention of color unevenness, painting with rust prevention paint is desirable.

The identification mark is provided with a color or color identification mark continuously or intermittently in the longitudinal direction of at least one side surface of the rectangular steel pipe and at a portion other than the central portion in the width direction, and the steel pipe is appropriately lengthened. Even when the steel pipe is cut or when a diaphragm or the like is joined to this steel pipe and the central part of the outer surface of the steel pipe is concealed, it is sufficient if the identification mark is in a state where it appears. The design of the display can be arbitrarily changed as needed. However, in consideration of its easiness and the like when providing the identification mark, it is extremely preferable to apply the rust preventive paint in a line shape as in the first embodiment. Further, it is preferable that the identification mark is provided over the entire length of the steel pipe in the longitudinal direction, but it is not always necessary to provide the identification mark entirely between the both end portions. It may be a short one. Furthermore, the identification itself does not have to be completely continuous in the longitudinal direction, that is, may be intermittent. For example, the identification display line 16 shown in FIG. 1 may be displayed intermittently as shown by a dotted line, and may be provided substantially in the longitudinal direction of the steel pipe.

As described above, since the identification mark only needs to be provided intermittently over the entire longitudinal direction, for example, various figures or patterns such as colored circles, triangles, squares, and rhombuses can be used. May be continuously displayed at predetermined intervals in the longitudinal direction of the steel pipe. Incidentally, as described above, the identification display may be displayed with a normal paint other than the rust-preventive paint, or any marking other than the paint that can be visually identified in any color. What is necessary is just to be able to perform identification display in a color different from the color of the material and to be able to confirm visually.

[0025]

According to the first aspect of the present invention, a square steel pipe provided with an identification mark by this identification mark method is used as a steel pole of a building or a building, and a cross beam is fixed via a diaphragm. When the frame is completed, this identification is visible from the outside without being obscured by the diaphragm, and it is easy to visually check whether, for example, an earthquake-resistant steel pipe is used as the iron column of the frame. It becomes possible to easily perform a building confirmation inspection and the like. Further, even when the steel pipe is cut to an appropriate length, the identification is displayed on any of the cut steel pipes. In addition, one side of the steel pipe
Is identified by identification markings on both end faces.
After the steel pipe has completed the manufacturing process,
Even if it is stacked and stored inside,
Not only from the side, but also from the end
Easy visual recognition of pipes being, for example, earthquake-resistant products
It is possible to do.

According to the second aspect of the present invention, by this identification display method, it is possible to easily provide a display so as to draw a so-called line on the outer surface of the steel pipe. This makes it possible to easily coat the outer surface of the steel pipe.

In the third embodiment of the present invention, since the rust preventive paint is used as the identification mark, the rust preventive paint is applied to the entire framework after the building frame is completed. At this time, the identification display portion is simply applied twice with the rust preventive paint, and does not cause any obstacle in terms of the effect of the rust preventive. Further, no color unevenness occurs at the location of the identification display.

In the fourth aspect of the present invention, the same effect as in the first aspect is exerted by the steel pipe having the identification mark. In the fifth aspect of the present invention, the same effect as in the second aspect is exhibited by this steel pipe.
In the sixth aspect of the present invention, the same effects as those of the third aspect are exhibited by the steel pipe.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view of a steel pipe having an identification display according to the present invention.

2 (A), 2 (B) and 2 (C) are explanatory views of a state where various diaphragms are welded to a steel pipe provided with the identification mark of the present invention.

3 (A), (B), (C), (D) and (E) are side views illustrating one side surface of a square steel pipe provided with various identification signs according to the present invention. .

FIG. 4 is an explanatory view showing a state in which the steel pipe according to the present invention shown in FIG. 1 has completed all the manufacturing processes, is piled up at its storage place, and is stored.

[Explanation of symbols]

10 ... steel pipe, 11, 12 ... end face, 15 ... side face, 16 ... line, 16a, 16b, 16c, 16d, 16e ... identification display

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B21C 51/00 E04B 1/24 E04C 3/04 E04C 3/32

Claims (6)

(57) [Claims] 1. At least one side surface of a rectangular steel pipe in a width direction.
Consecutively in the longitudinal direction of the side about the position deviated from the center position
Providing color or intermittent identification,
All or part of one or both ends of the steel pipe may be colored.
Even when this steel pipe is cut to an appropriate length, or by joining a diaphragm or the like to this steel pipe,
An identification display method for a square steel pipe, wherein the identification display is displayed even when a part of the outer surface of the steel pipe is concealed. Wherein identification is square identification method of the steel pipe according to claim 1, characterized in that it consists of a predetermined width provided throughout the longitudinal direction of the steel pipe line. Wherein identification method of the square steel pipes according to claim 1 or 2 identification is characterized in that it is displayed by rust paint. 4. Inside the width direction of at least one side surface of the rectangular steel pipe.
Consecutively in the longitudinal direction of the side about the position deviated from the center position
Providing color or intermittent identification,
All or part of one or both ends of the steel pipe may be colored.
Even when this steel pipe is cut to an appropriate length, or by joining a diaphragm or the like to this steel pipe,
A rectangular steel pipe having an identification mark, wherein the identification mark is displayed even when a part of the outer surface of the steel pipe is concealed. 5. The square steel pipe having an identification mark according to claim 4 , wherein the identification mark comprises a line of a predetermined width provided over the entire length of the steel pipe in the longitudinal direction. 6. A square steel pipe having an identification indication according to claim 4, wherein the identification indication is indicated by a rust preventive paint.