Technical field [0001] CROSS REFERENCE TO RELATED APPLICATIONS This application is based on Japanese Patent Application No. 2016-002066, filed in Japanese on January 7, 2016, and claims priority, the contents of which are incorporated herein. [0002] The present invention relates to a manufacturing method and a rolling apparatus for manufacturing the H-shape steel slab like a rectangular cross-section as a material. BACKGROUND [0003] 　In the production of H-section steel, and shaped into coarse profile (the rolled material of so-called dog-bone shape) material slab or bloom like extracted from the heating furnace by the rough rolling mill (BD), the intermediate universal rolling machine by then rolling the thickness of the web and the flanges of the crude shaped product, wrought and shaping of the width reduction and the end face flange to the material to be rolled is applied by edger rolling mill close to the intermediate universal rolling mill together . Then, H-shaped steel product by finishing universal rolling machine is shaped. [0004] 　In the manufacturing method of the H-shaped steel, in shaping the rough profile of the called dogbone shape away from the slab material is a rectangular cross section, put an interrupt to the slab end faces in a first caliber of rough rolling step after spread split the interruption in the second and subsequent grooved, or performs deep is allowed edging rolling interrupt depth, techniques for erasing the interruption of the slab end faces are known in the subsequent caliber (e.g. see Patent Document 1). [0005] 　Further, for example, Patent Document 2, the interrupt put an interrupt to the slab edge are sequentially deep, pushed open in the subsequent box grooved, technology for forming a flange portion corresponding to H-section steel is disclosed. CITATION Patent Document [0006] Patent Document 1: JP-A-7-88501 JP Patent Document 2: JP 60-21101 JP Summary of the Invention Problems that the Invention is to Solve [0007] 　Recently, it has been desired production of large H-shaped steel products due to the size of the structure or the like. Especially products broadened compared contribute significantly flange strength and rigidity of the H-shaped steel conventionally been desired. Flange to produce a H-shaped steel products that are broadening, it is necessary to shape the large material to be rolled flange width compared with conventionally shaped in the rough rolling step. [0008] 　However, for example, in the technique disclosed in Patent Document 1, put the interruption to the material the end face of such slabs (slab end surface), and edging of that end, a method of performing rough rolling by utilizing the width of spread, there is a limit to the broadening of the flange. That is, the wedge design in order to broadening of the flange in a conventional rough rolling method (interrupt angle design), pressure adjustment, although improved techniques by the width spread such lubrication adjustment is achieved, any method to be the flange width because does not contribute significantly, the width spread ratio indicating the ratio of the spread of the flange width to the edging weight is about 0.8 in the initial stage of the efficiency is the highest conditions of edging, the edging of the same caliber Under the conditions repeatedly, decreases as spread value of the flange width is increased, and finally is known to be about 0.5. Further, the material itself such as slub large, it is conceivable to increase the edging amount, the equipment scale and reduction amount of the rough rolling mill went and is not realized broadening of the sufficient product flanges because of the device limits there are circumstances. [0009] 　Further, for example, in the technique disclosed in Patent Document 2, edging rolling against material such as interrupt put slab, without going through particular interrupt shape changes, etc., immediately bottom by box grooved flat shape It was carried out, and then shaping the flange portion corresponding shape due to varying rapidly the shape of the rolled material failure is likely to occur in such a way. In particular, the shape change of the rolled material in such a molding includes a force of the contact portion between the rolled material and the roll are those determined by the relationship between the flexural rigidity of the material to be rolled, it size of the flange width than conventional there is a problem shape defect is more likely to occur in the production of H-beams. [0010] 　Furthermore, in recent years, even in products broadened than the flange it has been conventionally demanded various sizes (dimensions), for example, from a slab material having the same thickness of the flange width different H-section steel of the same technology is desired, such as divide built with a roll. [0011] 　In view of such circumstances, an object of the present invention, the caliber of the rough rolling step using in the production of H-beams, the deep interruption in projections that an acute tip shape the material end surface of such slab placed, by successively folding the flange portion formed by it, together with the by suppressing the generation of shape defect in the rolled material to produce a large H-beams products flange width efficiently and stably than the conventional, the flange It is to provide the same role with by the H-beam that can be divided structure manufacturing method and rolling apparatus different H-section steel having a flange width at Do H-shaped steel product size width. Means for Solving the Problems [0012] 　To achieve the above object, according to the present invention, the rough rolling process, a process for the preparation of the intermediate rolling step, H-section steel having a finish rolling step, the rolling mill to perform the rough rolling process, the It is engraved plurality of grooved 7 or more to shape the rolled material, wherein the plurality of grooved one or more paths shaping of the material to be rolled is performed, the plurality of holes type, the width direction of the rolled material a plurality of split insertion hole type as front grooved protrusion portion is provided to put vertically interrupt hand, a plurality of the subsequent hole type bending the flange corresponding portion of the material to be rolled which is formed by the split insertion hole type consists bending grooved, the split insertion hole type has a caliber to put two interrupts of different lengths, the bent hole type, length formed material to be rolled in the split insertion hole type dimension corresponding to the two flange corresponding portion of different of Has a hole type, and in the folded grooved, characterized in that the pressure in a state where the end surface and a grooved peripheral surface of the rolled material in the shaping of at least one or more paths are in contact is carried out, the production of H-beams a method is provided. [0013] 　The plurality of the folded grooved protrusion bending the flange corresponding portion by pressing the flange corresponding portion formed by the split insertion hole type may be provided, respectively. [0014] 　A plurality of tip angle of the projections provided on the split insertion hole type may be 40 ° or less both 25 ° or more. [0015] 　In several of the folding caliber, provided for each of the grooved dimensions corresponding to two types of flange corresponding portion of different lengths, the two-stage configuration in which two types of projections having different tip angles is provided of the bent grooved provided in the two stages, the tip angle of the protrusion of one of the grooved is 70 ° or more 110 ° or less, the tip angle of the other of the protrusion was at 130 ° or 170 ° or less and it may be. [0016] 　The rough rolling step is carried out in the sizing mill and the roughing mill, a plurality of the split insertion hole type and front grooved out of a plurality of said folding caliber is engraved on the sizing mill roll, a plurality of the subsequent caliber of the folding caliber may be engraved on the roll of the rough rolling mill. [0017] 　The rough rolling step is carried out in the rough rolling machine 1 group, by shaping the plurality of the split insertion hole type and front grooved out of a plurality of said folding caliber at 1 Heat th of the roughing mill done, by shaping the latter stage caliber of the plurality of the folded caliber may be carried out at 2 a heat-th of the rough rolling mill. [0018] 　Thickness using different materials of the same and the width is a web height identical, and flange width can be produced with different H-section steel. [0019] 　According to the present invention from another aspect, there is provided a rolling device for performing rough rolling step in the production of H-beams, 7 or more grooved performing one or more paths shaping of the material to be rolled is engraved, wherein the plurality of grooved includes a plurality of split insertion hole type as front hole type projections put vertically interrupt to the width direction of the rolled material is provided, the rolled formed by the split insertion hole type is composed of a plurality of folding caliber as subsequent caliber bending the flange corresponding portion of wood, the split insertion hole type has a caliber to put two interrupts of different lengths, the bent hole type, It has a caliber of dimension corresponding to the two flange corresponding portion of different lengths formed in the material to be rolled in the split insertion hole type, the folding hole type, the material to be rolled in shaping the above at least one pass contacting the end face and the grooved peripheral surface of It characterized by having a forming, rolling apparatus is provided. [0020] 　The plurality of the folded grooved protrusion bending the flange corresponding portion by pressing the flange corresponding portion formed by the split insertion hole type may be provided, respectively. [0021] 　A plurality of tip angle of the projections provided on the split insertion hole type may be 40 ° or less both 25 ° or more. [0022] 　In several of the folding caliber, provided for each of the grooved dimensions corresponding to two types of flange corresponding portion of different lengths, the two-stage configuration in which two types of projections having different tip angles is provided of the bent grooved provided in the two stages, the tip angle of the protrusion of one of the grooved is 70 ° or more 110 ° or less, the tip angle of the other of the protrusion was at 130 ° or 170 ° or less and it may be. [0023] 　Consists sizing mill and the roughing mill, a plurality of the split insertion hole type and front grooved out of a plurality of said folding caliber is engraved on the sizing mill rolls, of a plurality of said folding caliber subsequent caliber may be engraved on the roll of the rough rolling mill. Effect of the invention [0024] 　According to the present invention, the caliber of the rough rolling step using in the production of H-beams, deep interrupts placed in protrusion in which the sharp tip shape the material end surface of such slab, which is formed by it by bending the flange portion sequentially by suppressing the generation of shape defect in the rolled material, with the production of large H-beams products flange width efficiently and stably than the conventional, the flange width large H-shaped steel products different H-section steel with a flange width becomes possible to divide built with the same roll in. BRIEF DESCRIPTION OF THE DRAWINGS [0025] FIG. 1 is a schematic illustration of a production line of H-shaped steel. FIG. 2 is a schematic illustration of a first caliber. 3 is a schematic illustration of a 2-1 caliber. 4 is a schematic illustration of a 2-2 caliber. 5 is a schematic illustration of a 3-1 caliber. 6 is a schematic illustration of a 3-2 caliber. 7 is a schematic illustration of a 4-1 caliber. 8 is a schematic illustration of a 4-2 caliber. DESCRIPTION OF THE INVENTION [0026] 　It will be described below with reference to the drawings, embodiments of the present invention. In the specification and drawings, components having substantially the same function and structure are a repeated explanation thereof by referring to the figures. [0027] 　Figure 1 is an explanatory view of the manufacturing line T of H-beam comprising rolling equipment 1 according to this embodiment. As shown in FIG. 1, the production line T in order from the upstream side, the heating furnace 2, the sizing mill 3, the roughing mill 4, the intermediate universal rolling mill 5, finishing universal rolling mill 8 are arranged. Further, edger rolling mill 9 is provided near the intermediate universal rolling mill 5. In the following, the steel in the manufacturing line T for explanation, collectively described as "the rolled material A", sometimes illustrated with the shape dashed-hatched, or the like as appropriate in each figure. [0028] 　As shown in FIG. 1, the production line T, the rolled material A, for example, a slab 11 like extracted from the heating furnace 2 is rough rolled in the sizing mill 3 and roughing mill 4. Then, the intermediate rolling in the intermediate universal rolling mill 5. At the time of intermediate rolling, pressure against the end or the like of the material to be rolled (flange corresponding portion 12) is performed by the edger rolling mill 9 as needed. In the usual case, sizing mill 3 and rolls roughing mill 4, are combined 4-6 or so caliber is engraved, H-shaped coarse profiles via these in reverse rolling of a plurality of passes 13 is shaped by using a rolling mill train comprising the H-shaped coarse profile 13 from the two rolling mill of the intermediate universal rolling mill 5 edger rolling mill 9, reduction of multiple paths is added, the intermediate member 14 It is shaped. The intermediate member 14 is finish rolled to a product shape in the finish universal rolling mill 8, H-shaped steel product 16 is produced. [0029] 　Next, will be described with reference to the drawings grooved structure or pore shape which is inscribed in the sizing mill 3 and roughing mill 4 shown in Figure 1 below. Normally, the roughing mill 4, in addition to the first hole-type to fourth grooved described below, H-shaped coarse profile of a so-called dog-bone shape the rolled material A which is shaped at their grooved 13 caliber to is further provided, this hole type is illustrated, the description herein since they are known from the prior art will be omitted. The heating furnace 2 and the intermediate universal rolling mill 5 in the production line T, finishing universal rolling mill 8, the edger rolling mill 9 and the like, are common devices used in the production of H-section steel conventionally, the device configuration etc. will be omitted herein because it is known. [0030] 　FIGS. 2-8 are schematic illustration of the grooved which is engraved on the sizing mill 3 and roughing mill 4 for rough rolling step. Here, the first hole-type to fourth grooved described, for example it may be all engraved in the sizing mill 3, and the first hole-type to the fourth hole type divided into the sizing mill 3 and roughing mill 4 it may be engraved. That is, the first hole-type to fourth grooved may be engraved over both the sizing mill 3 and roughing mill 4, may be engraved on one of the rolling mill. The rough rolling step in the normal production of H-beams, are shaped in one or more paths in each of these grooved performed. [0031] 　In this embodiment, the second hole-type, third hole type, the fourth hole type, is composed of two different caliber of each geometry, the second hole type 2-1 grooved and the second -2 caliber, third hole type 3-1 grooved and the 3-2 hole type, the fourth hole type consists of 4-1 grooved and 4-2 caliber. Note that illustrated in FIGS. 2-5, a schematic final pass shape of the rolled material A during molding in the grooved by a broken line. [0032] 　Figure 2 is a schematic illustration of a first caliber K1. The first caliber K1 is engraved on the grooved roll 20 and the lower grooved roll 21 are a pair of horizontal rolls, the material to be rolled A is in roll gap of over grooved roll 20 and the lower grooved roll 21 It is pressure-molding. Further, the peripheral surface of the upper grooved roll 20 (i.e., the upper surface of the first hole-type K1), the protrusion 25 which protrudes toward the inside caliber is formed. Further, the peripheral surface of the lower grooved roll 21 (i.e., the bottom surface of the first hole-type K1), the projections 26 projecting toward the inside caliber is formed. These projections 25 and 26 has a tapered shape, the dimensions of the projecting length and the like are configured equal to each other between the protrusion 25 and the protrusion 26. The height of the protrusions 25 and 26 (projecting length) and h1, the tip angle and .theta.1a. [0033] 　In the first grooved K1, projections 25 and 26 is pressed against the upper and lower ends of the rolled material A (slab end surface), the interrupt 28, 29 are formed. Here, (also wedge angle is referred) tip angle of the projections 25 and 26 .theta.1a is desirably 40 ° or less e.g. 25 ° or more. 　The lower limit of the wedge angle is determined by the intensity of the normal role. The rolled material A is in contact with the roll (first upper the grooved K1 grooved roll 20 and the lower grooved roll 21), the roll expands by heat received therebetween, the material to be rolled A is separated from the roll roll It is cooled to shrink. Although in shaping these cycles are repeated, the wedge angle is too small, heat input from the rolled material A is the projection for the thickness of the protruding portion (protruding portions 25 and 26 in the first hole-type K1) is thin It makes it easier to enter from the left and right parts, easy roll is more high temperature. Roll enters the heat cracks because the thermal amplitude becomes a high temperature increases and can lead to roll breakage. 　On the other hand, when the wedge angle increases, the interruption (the first hole-type K1 interrupts 28, 29) formed during deformation by wide spread in occurs at each hole type, in particular, in the molding of the second grooved K2 later to be described below flanges generation efficiency is lowered. 　From the above viewpoint, the present inventors have conducted extensive analytical evaluation, in the hole-type configuration according to the present embodiment, the range of the wedge angle θ1a is preferably not more than 40 ° 25 ° or more. [0034] 　Here, the caliber width of the first hole-type K1, the thickness of the material to be rolled A (i.e., the slab thickness) is preferably approximately equal to. Specifically, the width of the caliber at the tip of the projecting portions 25 and 26 formed in the first hole-type K1, by the slab thickness in the same, suitably secured lateral centering of the rolled material A It is. Further, with the construction of such caliber dimensions, as shown in FIG. 2, at the time of molding of the first grooved K1, the upper and lower ends of the material to be rolled A (slab end surface), the protrusion some parts 25, 26 and grooved side (side wall) is in contact with the rolled material a, with respect to the slab on the lower end portion which is divided into four elements by the interrupt 29 (site), the first hole it is preferable that positive pressure is not carried out at the top and bottom surfaces of the mold K1. Pressure by the top and bottom surfaces of the grooved is thus degrading the production efficiency will be caused to extend in the longitudinal direction of the rolled material A, the flange (flange portion 100 to be described later). That is, in the first hole-type K1, reduction in the protrusions 25 and 26 when the projections 25 and 26 is pressed against the upper and lower ends of the rolled material A (slab end surface), the interrupt 28, 29 are formed the amount (wedge tip draft amount [Delta] T) is reduction amount sufficiently larger than (the slab edge rolling reduction Delta] E) of the slab on the lower end, thereby interrupt 28, 29 are formed. [0035] 　Figure 3 is a schematic illustration of a second caliber K2-1. The second grooved K2-1 is engraved on grooved roll 30 and the lower grooved roll 31 on a pair of horizontal rolls. Circumferential surface of the upper grooved roll 30 (i.e., the upper surface of the second hole-type K2-1), the projections 35 projecting toward the inside caliber is formed. Further, the peripheral surface of the lower grooved roll 31 (i.e., the bottom surface of the second hole-type K2-1), the projecting portion 36 projecting toward the inside caliber is formed. These projections 35 and 36 has a tapered shape, the dimensions of the projecting length and the like are configured equal to each other between the protrusion 35 and the protrusion 36. These tip angle of the projections 35, 36 is preferably a wedge angle θ1b of 40 ° or less 25 ° or more. [0036] 　The height (projecting length) h2 of the projecting portion 35 and 36, the is configured higher than the height h1 of the protruding portions 25 and 26 of the first hole-type K1, it has a h2> h1. Here, as described above, the tip angle (wedge angle Shita1b) of the projecting portions 35 and 36 are the same (i.e., θ1a = θ1b) and tip angle of the projections 25, 26 of the first grooved K1 it is preferable. [0037] 　Here, than the height h1 of the protruding portions 25 and 26 formed in the first hole-type K1, higher in the height h2 of the projecting portion 35, 36 formed in the second hole-type K2-1, to be rolled toward the second caliber K2-1 longer similarly penetration length of the upper and lower ends of the timber a to the (slab end surface). The rolled material penetration depth into A of the protruding portions 35 and 36 in the second grooved K2-1 is the same as the height h2 of the projecting portion 35, 36. That is, the penetration depth h1 'to the rolled material A of the protruding portions 25, 26 of the first grooved K1, penetration into the material to be rolled A of the protruding portions 35, 36 of the second grooved K2-1 depth h2 is made on the relationship between h1 ' L1) a (broad product) It will be described molding H-shaped coarse profile in the case of. [0066] 　First, with respect to the slab material 11 extracted from the heating furnace 2, the formation of the interrupt 28, 29 is performed on the upper and lower end portions in the first hole-type K1 (see FIG. 2). Subsequently, in the second hole-type K2-1, such shaping is carried out as further deepen the interruption 29, the interruption 38, 39 are formed. Step in these first hole-type K1 and second grooved K2-1 is performed in common with the first H-shaped steel product and a second H-shaped steel products (see Figure 3). In this case, although the thickness of the slab material 11 used is the same in both, the slab width is longer better material corresponding to the second H-shaped steel products. [0067] 　In the production of the first H-shaped steel product, the rolled material A is shaped by the third grooved K3-1, interrupt 38 and 39 are spread, the separation portion which is shaped with the formation of the interrupt 58, 59 (portion corresponding to the flange portion 100 to be described later) are folded outwardly (see FIG. 5). Then, the rolled material A after shaping in the third grooved K3-1, further shaped in the fourth grooved K4-1, interrupt flange portion 100 which has been split site (described later shaped with the formation of 78 and 79 site) corresponding to the bent further outward (see FIG. 7). 　Here, the flange piece width L1 of the first H-shaped steel products is dependent on the single width of the flange corresponding portion to be shaped with the formation of interrupts 38 and 39 in the second grooved K2-1. [0068] 　On the other hand, in the production of the second H-shaped steel product, after shaping of the upper and lower end surfaces of the rolled material A which has been shaped by the second grooved K2-1, the rolled material A second grooved K2- at 2, further as deeply shaping the interrupt 38 and 39 are formed is carried out, the interrupt 48, 49 are formed (see FIG. 4). Then, the rolled material A after shaping in the second grooved K2-2, further shaped at the third grooved K3-2, interrupt 48 and 49 is widened, it is shaped with the formation of the interrupt 68 split portion (portion corresponding to the flange portion 100 to be described later) are folded outwardly (see FIG. 6). Subsequently, the rolled material A after shaping in the third grooved K3-2, further shaped in the fourth grooved K4-2, interrupt separation portion which is shaped with the formation of 88 and 89 (described later flange a portion corresponding to 100) is bent further outward (see FIG. 8). 　Here, the flange piece width L2 of the second H-shaped steel products is dependent on the single width of the flange corresponding portion to be shaped with the formation of interrupts 48, 49 in the second grooved K2-2. [0069] 　Thus two types of H-shaped coarse profile which is shaped by the flange piece width as described above are different in L1 and L2. Meanwhile in the width of the H-shaped coarse profile, the width of the portion corresponding to the web are substantially equal. By shaping the H-shaped coarse profile in such a configuration, in the rolling shaping at subsequent intermediate universal rolling mill 5 edger rolling mill 9 and the finishing universal rolling mill 8, two H-shaped with the same roll Chance rolling shaping coarse profile can be implemented. [0070] 　Table 1 includes a first H-shaped steel products above the flange piece width is L1 (narrow product), the second H-beams products flange members width is L2 (> L1) a (broad product) it is a table summarizing the construction process of the H-shaped coarse profile in the case of producing. Note that the hole-type name G1 ~ G4-2 in Table 1 corresponds to the first hole-type K1 ~ fourth grooved-K4-2, stand No divides a rolling mill for engraving the caliber to 2 groups is an example of a case was, first time, the description of the second time, when the rolling stand of performing rough rolling there is only one group, in two roles chance to compensate for the roll barrel length is insufficient It shows rolling caliber and an example of the order in the case of carrying out the operation with 2 heat heating. 　Further, number of the first H-shaped steel products (narrow product) number of about 1-4 and a second H-shaped steel products (broad product) about 1 to 5, shows the order as grooved to Tsuzai ing. [0071] [Table 1] [0072] 　The construction process shown in Table 1, the first H-shaped steel products (narrow product) and the second H-steel products (broad product) are divided structure. Note that, as described in the description in Table 1, as well as the present embodiment, in a case where the first H-shaped steel products (narrow product) and separating build a second H-shaped steel products (broad product), a second hole type 2-1 (G2-1 in the table) is used in both products. This is when the further deepening the interrupt 28, 29 on which is formed at the lower end of the rolled material A in the first hole-type K1, without causing lateral heterogeneity and passing material failure or the like of the flange corresponding portion, it is to form a stable interrupt. In particular, for example, when the flange width to produce a flange large H-shaped steel products of width that is not less than 300mm, before the flange corresponding portion is left unevenly shaped, performs a shape correction of the flange portion corresponding time by using the second hole-type 2-1, a stable form of the shaped and interrupt the flange corresponding portion is performed to. [0073] 　As described above, put the interruption on the lower end portion of the material to be rolled A (slab end faces) by using the first hole-type K1 ~ fourth grooved K4-2 according to this embodiment, divided into left and right by them interrupt performs processing for folding the respective portions in the left and right was, by the shaped such to form a flange portion 100, shaped in the H-shaped coarse profiles 13 without reduction of the lower end face in the vertical direction on the material to be rolled a (slab) It can be performed. That is, compared to the rough rolling process for constantly rolling traditional performed by the slab end faces has a flange width by broadening it is possible to shape the H-shaped coarse profiles 13, a large final product result, flange width ( it is possible to produce a H-beam). [0074] 　Furthermore, the first hole-type K1 ~ fourth grooved K4-2 used in the molding method such as for example shown in Table 1, using different slab material thicknesses are the same width, the third grooved as single width of the flange portion 100 is short, which is shaped with K3-1 and fourth grooved K4-1, flange is shaped with a third grooved K3-2 and fourth grooved K4-2 as piece width parts 100 is long, the two coarse profile is shaped in, they are shaped into a so-called dog-bone shape by known flat shaped grooved (down web Atsuana type), the dimensions of the flange portion different H-roughness profile 13 is shaped. [0075] 　That is, according to the manufacturing method of this embodiment, have the same thickness, width from different slab material, H-shaped coarse profiles 13 having two different flange width in the same roll chances are shaped , for that two H-shaped coarse profiles 13, using a rolling mill train comprising two rolling mill intermediate universal rolling mill 5 edger rolling mill 9 as shown in FIG. 1, reduction of multiple paths is added, intermediate material 14 is shaped. The intermediate member 14 is finish rolled to a product shape in the finish universal rolling mill 8, H-shaped steel product 16 is produced. Here, in the intermediate rolling step and the finish rolling step, the flange piece width rolling and shaping such as major changes not performed, from H-shaped coarse profiles 13 having two different flange width, two different H-beam product flange width is produced. [0076] 　Further, in the manufacturing method of this embodiment, the second hole-type K2-1 ~ fourth grooved K4-2, upper and lower ends of the rolled material A at the final pass (the slab end surface), an opposed a grooved top surface and a grooved bottom surface is subjected to shaping so as to contact. That is, the material to be rolled A in each grooved rolling step, is shaped while maintaining the dimension precision in a shape along the hole shape. Therefore, a rough profile which corresponds to the first H-shaped steel product is shaped by using a third grooved K3-1 and fourth grooved K4-1 (narrow product), the third grooved K3-2 and a second H-shaped steel products (broad product) to the corresponding coarse profile which is shaped with a fourth grooved K4-2 is shaped into a shape along the respective grooved shape. By shaping this way, coarse profile corresponding to the first H-shaped steel products (narrow product), as well as coarse profile corresponding to the second H-steel products (broad product), left and right flanges can meat of substantial portions (rear flange portion 100 of) the shaping efficient stably while suppressing the shape defects such nonuniform. [0077] 　Having described an example of an embodiment of the present invention, the present invention is not limited to the illustrated form. Those skilled in the art within the scope of the spirit as set forth in the appended claims, it is intended to cover various modifications and changes naturally fall within the technical scope of the present invention also for their things to be understood. [0078] 　In the above-described embodiment, the first H-shaped steel products flange members width is L1 and (narrow product), the flange piece width L2 (> L1) a second H-shaped steel products are (broad product) the has been described with shaping the slab material having the same thickness with the same roll chance, the H-shaped steel products having two flange width thus produced is dimensioned as follows It is exemplified. That is, for example, from a slab material of the same thickness, when manufacturing the product of the flange width 300mm and 400mm, and the like when manufacturing a product of flange width 400mm and 500mm are considered. 　Dimensions pitch common H-beams products flange width are known to be 50mm, when the flange width is divided build 50mm two different H-shaped steel products, pass schedule in the same caliber It can be performed in the adjustment. However, the flange width is 50mm greater (e.g. 100 mm) two different when dividing build H-shaped steel products, hamper the deformation of the material to be rolled in an intermediate rolling process or the like, the flange width from shaping stage coarse profile it is necessary to adjust. Therefore, in such a case, by making classification of the same roll chances by using the method according to the above embodiment H-shaped steel products two different flange width is produced. [0079] 　For example, time in the above embodiment, the first hole-type K1 ~ fourth grooved K4-2 may be engraved over both the sizing mill 3 and roughing mill 4, to one of the rolling mill has been described as a may be set, as described with reference to Table 1, engraved first caliber K1 ~ third grooved K3-2 sizing mill 3 as a first rolling mill, it is more desirable to engraved fourth grooved K4-1 and K4-2 to the roughing mill 4 of the second rolling mill. [0080] 　In the rolling mill having a rolling mill to perform the rough rolling step only 1 group performs modeling using a roll having engraved the first hole-type K1 ~ third grooved K3-2 one heat eyes, then, perform roll recombinant, it may be performed shaping with a roll having engraved the fourth grooved K4-1 and K4-2 to the 2 heat eyes. [0081] 　Although it illustrated and described a slab as a material in the production of H-beams, but the present invention Other materials similar shape is naturally applicable. Thus, for example it can be applied to the case where by shaping the beam blank material to produce H-beams. Industrial Applicability [0082] 　The present invention, for example, can be applied slab like a rectangular cross-section for the production technique for producing the H-section steel as a material. DESCRIPTION OF SYMBOLS [0083] 　　1 ... rolling equipment 　　2 ... furnace 　　3 ... sizing mill 　　4 ... roughing mill 　　5 ... intermediate universal rolling mill 　　8 ... finishing universal rolling mill 　　9 ... edger rolling mill 　　11 ... slab 　　12 ... flange corresponding portion 　　13 ... H-shaped coarse profiles 　　14 ... intermediate member 　　16 ... H-shaped steel product 　　20 ... upper grooved roll (first hole-type 　　K1) 21 ... lower grooved roll (first hole-type 　　K1) 25 and 26 ... protrusion (first hole-type 　　K1) 28, 29 ... interrupt (first hole-type 　　K1) 30 ... upper grooved roll (second grooved 　　K2-1) 31 ... lower grooved roll (second grooved 　　K2-1) 35, 36 ... protruding portion (second hole type 　　K2-1) 38, 39 ... interrupt (second grooved 　　K2-1) 40 ... upper grooved roll (second grooved 　　K2-2) 41 ... lower grooved roll (second grooved 　　K2-2) 45 , 46 ... protruding portion (second grooved 　　K2-2) 48, 49 ... interrupt (second grooved K2-2) 　　50 ... upper grooved roll (third grooved 　　K3-1) 51 ... lower grooved roll (third grooved 　　K3-1) 55, 56 ... protruding portion (third grooved 　　K3-1) 58, 59 ... Interrupt (third grooved 　　K3-1) 60 ... upper grooved roll (third grooved 　　K3-2) 61 ... lower grooved roll (third grooved 　　K3-2) 65 and 66 ... protrusion (third grooved 　　K3-2) 68, 69 ... interrupt (third grooved 　　K3-2) 70 ... upper grooved roll (fourth grooved 　　K4-1) 71 ... lower grooved roll (fourth grooved K4-1) 　　75, 76 ... protrusion (fourth grooved 　　K4-1) 78, 79 ... interrupt (fourth grooved 　　K4-1) 80 ... upper grooved roll (fourth grooved 　　K4-2) 81 ... lower grooved roll (second 4 caliber 　　K4-2) 85, 86 ... protruding portion (fourth grooved 　　K4-2) 88, 89 ... interrupt (fourth grooved 　　K4-2) 100 ... flange portion 　　A ... the rolled material 　　T ... manufacturing La Inn The scope of the claims [Requested item 1] Rough rolling step, an intermediate rolling step, the manufacturing method of the H-shaped steel having a finish rolling process, wherein the rolling mill to perform the rough rolling step, 7 or more of the plurality of grooved to shape the material to be rolled is time is set, wherein in the plurality of grooved one or more paths shaping of the material to be rolled is performed, the plurality of holes type, front hole the protrusion is provided to put vertically interrupt to the width direction of the material to be rolled a plurality of split insertion hole type as a type is composed of a plurality of folding caliber as subsequent caliber bending the flange corresponding portion of the material to be rolled which is formed by the split insertion hole type, the split insertion hole type, It has a caliber to put two different types of interrupts lengths, the bent hole type, having a size corresponding to the two flange corresponding portion of different lengths formed in the material to be rolled in the split insertion hole type It has a hole type, and in the folded grooved less End surface grooved circumferential surface and is rolling in contact, characterized in that the performed method of H-shaped steel material to be rolled in is also shaped more than one pass. [Requested item 2] The plurality of the folded caliber, characterized in that the projections are respectively provided for folding the flange corresponding portion by pressing the flange corresponding portion formed by the split insertion hole type, according to claim 1 method of manufacturing the H-shaped steel. [Requested item 3] Characterized in that the tip angle of the projections provided on the plurality of the split insertion hole type is less than both 25 ° or more 40 °, the manufacturing method of the H-shaped steel according to claim 1 or 2. [Requested item 4] In several of the folding caliber, provided for each of the grooved dimensions corresponding to two types of flange corresponding portion of different lengths, the two-stage configuration in which two types of projections having different tip angles is provided , of the bent hole type provided in the second stage, the tip angle of the protrusion of one of the grooved is 70 ° or more 110 ° or less, the tip angle of the other projecting portion is 130 ° or more 170 ° or less wherein the method of manufacturing H-shaped steel according to any one of claims 1 to 3. [Requested item 5] The rough rolling step is carried out in the sizing mill and the roughing mill, a plurality of the split insertion hole type and front grooved out of a plurality of said folding caliber is engraved on the sizing mill roll, a plurality of the the folding subsequent caliber of the grooved, characterized in that it is inscribed in the roll of the roughing mill, the production method of the H-shaped steel according to claim 4. [Requested item 6] The rough rolling step is carried out in the rough rolling machine 1 group, by shaping the plurality of the split insertion hole type and front grooved out of a plurality of said folding caliber at 1 Heat th of the roughing mill done, by shaping the latter stage caliber of the plurality of the folded grooved, characterized by being performed in 2 heat th of the roughing mill, the method of manufacturing H-shaped steel according to claim 4. [Requested item 7] Thickness using different materials of the same and the width, the same web height and flange width to produce a different H-shaped steel, a method of manufacturing H-shaped steel according to any one of claims 1 to 6, . [Requested item 8] A rolling apparatus for performing rough rolling step in the production of H-beams, 7 or more grooved performing one or more paths shaping of the material to be rolled is engraved, the plurality of holes type of material to be rolled a plurality of split insertion hole type as front grooved protrusion portion is provided to put vertically interrupt to the width direction, as subsequent caliber bending the flange corresponding portion of the material to be rolled which is formed by the split insertion hole type is composed from a plurality of folding caliber, the split insertion hole type has a caliber to put two interrupts of different lengths, the bent hole type formed in the material to be rolled in the split insertion hole type by having a caliber of dimension corresponding to the two flange corresponding portion of different lengths, the bent hole type, the end face and the grooved peripheral surface of the rolled material is in contact at least one pass or more shaped It characterized by having a configuration, Extension apparatus. [Requested item 9] The plurality of the folded caliber, characterized in that the projections are respectively provided for folding the flange corresponding portion by pressing the flange corresponding portion formed by the split insertion hole type, according to claim 8 rolling apparatus. [Requested item 10] Characterized in that the tip angle of the projections provided on the plurality of the split insertion hole type is less than both 25 ° or more 40 °, the rolling device according to claim 8 or 9. [Requested item 11] In several of the folding caliber, provided for each of the grooved dimensions corresponding to two types of flange corresponding portion of different lengths, the two-stage configuration in which two types of projections having different tip angles is provided , of the bent hole type provided in the second stage, the tip angle of the protrusion of one of the grooved is 70 ° or more 110 ° or less, the tip angle of the other projecting portion is 130 ° or more 170 ° or less characterized in that, the rolling device according to any one of claims 8-10. [Requested item 12] Consists sizing mill and the roughing mill, a plurality of the split insertion hole type and front grooved out of a plurality of said folding caliber is engraved on the sizing mill rolls, of a plurality of said folding caliber subsequent caliber is characterized in that it is inscribed in the roll of the rough rolling mill, the rolling apparatus according to claim 11.