KR20030045566A - Manufacturing equipments for corrugated steel pipe with multi-coated layer and flange - Google Patents

Abstract

PURPOSE: An apparatus for fabricating a flange-type corrugated steel pipe is provided to produce the flange-type corrugated steel pipe in mass-production by forming a multi-resin coating layer on inner and outer surfaces of the corrugated steel pipe. CONSTITUTION: A flange-type corrugated steel pipe manufacturing apparatus includes a tack welding device(100), an automatic welding device(200), a preheating device(300), a first resin coating device(400), a second resin coating device(500), a post-heating device(600) and a cooling device(700). A blower(450) is provided to forcibly blow high-pressurized air into the first and second resin coating devices(400,500). An LC control panel(800) is provided to carry out a control process. The flange-type corrugated steel pipe manufacturing apparatus also has a rail system(900) and a power transmission system.

Description

MANUFACTURING EQUIPMENTS FOR CORRUGATED STEEL PIPE WITH MULTI-COATED LAYER AND FLANGE}

BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a manufacturing facility for flanged coated corrugated steel pipes, and in particular, to cover multiple inner resin layers on the inner and outer surfaces of corrugated steel pipes to treat sewage, wastewater, and sewage. The present invention relates to a production facility for flanged coated corrugated steel pipes having a minimum of peeling of one resin layer and having flanges at both ends thereof, which have excellent bonding and workability.

In general, corrugated steel pipe is a member widely used as a drainage for wastewater / wastewater, a water supply for domestic or industrial water, or a hollow formwork or a construction suit in the construction field. In particular, corrugated steel pipe is an alternative material to the existing concrete drain pipe due to the increasing labor shortage and increased awareness of the cost and environmental problems in the construction field. It offers structural stability, durability, economy, assembly and productivity, and can be easily manufactured to the desired diameter and length.

As shown in FIG. 1, the corrugated steel pipe is inclined to the hot dip galvanized steel sheet to the roller-type die to form a corrugated acid and valleys on the steel sheet, and then has a spiral strip shape by the guide roller and the forming roller, and welded Alternatively, the side contacts are joined to each other by sheet metal coupling, thereby having a continuous spiral pipe-shaped body 1, 1 'of constant diameter.

The main body 1, 1 'of such corrugated steel pipe has a spiral acid and valley at the center part 2 of the body while passing through a reflexion process for using an annular band (5, 6). (3) has a straight mountain and valleys. Then, the main body 1, 1 'of the corrugated steel pipe is cut to a certain length, for example, approximately 6 meters in length, and then finished in one part through a finishing process such as applying a sealing material. The finished corrugated steel pipe parts are piped in the longitudinal direction when used in actual civil engineering or construction fields.

In particular, the annular bands 5 and 6, which are used as a pipe fitting means in piping, are return type bands, by fastening the extension ends 7 and 8 fixedly formed at or near the ends with stud bolts and nuts, respectively. The main bodies 1 and 1 'are connected to each other.

However, the conventional coated steel pipe takes a pipe joint method by the annular band, so that if the axial direction between the main body does not coincide with each other, it may maintain a poor coupling state or it takes a lot of time to pipe the main body, The disadvantage is the provision of an inefficient piping work environment.

In addition, since the conventional coated steel pipe uses an annular band, it is difficult to maintain watertightness when generating a pressure resistance, and relatively weak coupling force between steel pipes, compared to the flange method, there is a risk that deformation occurs in the coupling portion.

Therefore, in recent years, prototypes of corrugated steel pipes having flanges attached to both ends have been developed. However, this has been manufactured by a method of manually welding a flange to an outer diameter of a main body having a large diameter, and thus, a lack of equipment for mass production. Due to the manufacturing cost is very high, there is a problem that can not mass-produce high quality double coated products.

In particular, the conventional corrugated steel pipe is easy to cause corrosion in the welded portion because the flange is welded to the main body, which is caused by a very large problem in the characteristics of the corrugated steel pipe used for construction or civil engineering.

In addition, conventionally, products of coated steel pipes coated with corrugated steel pipes are shipped one after another as steel pipe products, but since they are coated with a resin of metal and other material on a metal surface or a plated surface to form a layer, predetermined use In the case of a coated steel pipe that has elapsed time, a resin layer is formed to be spaced apart or separated from the steel pipe.

In particular, the conventional coated corrugated steel pipe has a spiral surface shape bent by a plurality of screw bones or threads, so that it is difficult to form a resin layer having a uniform thickness on the outer circumferential surface, or the coating work is very troublesome and mass production is difficult. There is a disadvantage that the manufacturing unit price is expensive.

In view of the shortcomings of the prior arts, it is urgent to develop equipment for mass production in view of price and productivity.

Accordingly, an object of the present invention is a flanged sheathed corrugated steel pipe which can efficiently and largely produce a flanged sheathed corrugated steel pipe which forms a resin coating layer on the inner and outer surfaces of the corrugated steel pipe after welding the flange to the corrugated steel pipe. Its purpose is to provide manufacturing facilities for

1 is a perspective view for explaining a coupling method of a typical corrugated steel pipe,

Figure 2 is a plan view for explaining the overall configuration of the manufacturing equipment of the flange-type coated wave steel pipe according to an embodiment of the present invention,

3 is a cross-sectional view for explaining the arrangement of the manufacturing equipment shown in FIG.

4 is a perspective view for explaining a flange assembly welding apparatus of the manufacturing equipment shown in FIG.

5 is a perspective view for explaining a flange auto welding apparatus of the manufacturing equipment shown in FIG.

6 is a perspective view for explaining a line heating apparatus of the manufacturing equipment shown in FIG.

<Description of the symbols for the main parts of the drawings>

100: flange assembly welding device 200: flange automatic welding device

300: preheating device 400: the first resin coating device

450: high pressure blower 500: second resin coating device

600: after heating apparatus 700: cooling apparatus

800: PLC control unit 900: rail system

An object of the present invention as described above is a manufacturing apparatus for a flange-shaped coated corrugated steel pipe in which a flange is attached to both ends and coated with a resin in multiple ways, comprising: a flange-assembling welding device for tag welding a flange to a corrugated steel pipe; A flange auto welding device for producing a flanged corrugated steel pipe by pressing, rotating, and welding the tag welded flange and the body end of the corrugated steel pipe to each other; A line heating device for heating the flanged corrugated steel pipe by rotating it on the basis of an axis; A first resin coating device for putting the heated flanged corrugated steel pipe into a first resin powder filled with an adhesive resin to form an adhesive resin layer on a surface thereof; A second resin coating device for forming a general resin layer on a flange-type coated wave steel pipe having an adhesive resin layer; A post-heating device for reheating the flange-shaped coated wave steel pipe in which multiple resin layers are formed to even the surface state; And a cooling device that rotates and cools the flanged corrugated corrugated steel pipe in the air, and is achieved by a facility for manufacturing a flanged coated corrugated steel pipe, wherein the devices are sequentially arranged in the longitudinal direction of the rail system.

In addition, according to the present invention, the overall management and control from the high-pressure blower for supplying high-pressure air to the interior of the first and second resin coating device, and the cooling operation of the flange-coated corrugated steel pipe with a flange It is preferable to further include a centralized PLC control panel for performing the process.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

2 is a plan view for explaining the overall configuration of the manufacturing equipment of the flanged-covered corrugated steel pipe according to an embodiment of the present invention, Figure 3 is a cross-sectional view for explaining the arrangement of the manufacturing equipment shown in FIG. to be. In addition, Figure 4 is a perspective view for explaining the flange assembly welding apparatus of the manufacturing equipment shown in Figure 2, Figure 5 is a perspective view for explaining a flange auto welding apparatus of the manufacturing equipment shown in Figure 2, Figure 6 It is a perspective view for demonstrating the preheating apparatus of the manufacturing equipment shown in FIG.

As shown in Figures 2 and 3, if the manufacturing equipment of the flange-type coated corrugated steel pipe of the present invention is largely divided, the flange assembly welding welding apparatus 100 and the flange auto installed in the installation space of the ground or underground (10) The welding device 200, the preheating device 300, the first resin coating device 400, the second resin coating device 500, the post heating device 600, and the cooling device 700 are provided.

In addition, the present invention, the high-pressure blower 450 for pumping high-pressure air into the resin coating apparatus (400, 500), and the overall management from the installation work of the flange to the cooling operation of the flanged coated wave steel pipe and The centralized PLC control panel 800 for carrying out the control process, the rail system 900 and all the basic equipment for transmitting power to the respective devices, such as hydraulic and pneumatic and electrical supply facilities, and other non-standard steel pipes. There is provided a hoist facility consisting of a hoist rail coupled to an upper part of an inner wall of a factory and a center rung and a hoist for use in manufacturing.

In particular, since the corrugated steel pipe used in the present invention is manufactured by a conventional corrugated steel pipe manufacturing equipment, a detailed description thereof will be omitted. However, as described in the prior art, the corrugated steel pipe has a spiral acid and a valley at the center of the main body, and at both ends. Have straight mountains and valleys

That is, the present invention is a facility for manufacturing a flange-coated corrugated steel pipe by welding the flange to the body of the pre-fabricated corrugated steel pipe, then multi-coating.

The rail system 900 of the present invention for producing such flanged corrugated corrugated steel pipe is configured to complete a flanged coated corrugated steel pipe having a size and weight that are difficult to handle by human force within a relatively short manufacturing time.

That is, the rail system 900 is a pair having a gap between the reference corrugated steel pipe set, for example, 6 m long corrugated steel pipe set as a reference, and a plurality of rails (901 to 910) provided between the devices in the longitudinal direction And elevating means (921 to 925).

The rail system 900 is gradually reduced in height from the start point (left side of the drawing) to the end point (right side of the drawing). Therefore, the main body of the corrugated steel pipe can naturally roll down due to its own weight.

That is, the first to fourth rails (901 to 904) and the first lifting means (921, 922) is a flange assembly welding welding device 100, the flange auto welding device 200 and the second lifting means (923) It plays a role of conveying before, and is provided inclined slightly downward from the starting point to the second lifting means 923. In addition, flanges are mounted at both ends of the main body of the corrugated steel pipe while being conveyed.

In addition, the second to fourth lifting means (923 to 925) and the fifth to tenth rails (905 to 910) are the preheating device 300 and the first resin coating device 400 the main body of the corrugated steel pipe with a flange ) And the second resin coating device 500 and the post-heating device 600 and the cooling device 700, the relatively larger height than the first to fourth rails (901 to 904) described above. It is installed inclined slightly downward from the starting point to the end point. In addition, the main body of the corrugated steel pipe with a flange is surface-coated with an adhesive resin and a general resin during transportation to complete the flanged corrugated steel pipe.

Such a rail system 900, by allowing the straight mountain and the valley in the shape of the pre-fabricated corrugated steel can be rolled along the rail according to its own weight, it is possible to shorten the transfer line of the corrugated steel pipe, without the flow of work without interruption A uniform manufacturing process can be performed.

In the following, when describing the plurality of devices 100 to 800 sequentially arranged along the rail system 900 described above, either side is referred to as the upper and lower parts in FIG. 2 are substantially symmetrical. I will explain in detail.

First, the worker carries the main body of the corrugated steel pipe stacked in the loading area by a transportation means such as a forklift, and then places it on the first rail 901.

As shown in FIG. 4, the flange assembly welding apparatus 100 includes a transfer bed 103 capable of moving the upper plate 106 in the up and down directions of the shaft when the lever of the feed shaft is rotated, and the transfer bed. A tag welder 104 having two flange fixing roller shafts 101 and 102 fixed perpendicularly to the upper plate of 103 and a welding gun 105 is provided.

In particular, the roller shaft (101, 102) is formed with a seating slit (slit: slit) for mounting the flange 20 to the circumferential surface of the roller, respectively, through which the operator both ends of the body 30 of the corrugated steel pipe The flange 20 to be attached to the end is fitted to the mounting slits 107 of the roller shafts 101 and 102.

In addition, the first elevating means (921, 922) disposed inside the flange assembly fusible welding device 100 is a hook-type operation arm hinged in the up and down circumferential direction by the hydraulic strut 929, respectively. The first lifting means (921, 922) performs a hinge operation separately while supporting the body of the corrugated steel pipe so that the shaft center of the corrugated steel pipe coincides with the shaft center of the flange. In this case, the inner end of the flange 20 can be adjusted so that the end of the body 30 of the corrugated steel pipe is fitted, the operator temporarily performs a flange (by welding the tag using the welding gun 105 of the tag welding machine 104) 20) is temporarily bonded to the end of the body 30 of the corrugated steel pipe.

Thus, the main body of the corrugated steel pipe temporarily flanged is moved toward the inclined second rail 902 as the right hook type operation arm 921 of the first lifting means hinges upward, and the second rail 902 Roll along and moves to the third rail 903 installed near the flange auto welding apparatus 200.

In the present invention, the guide operation shafts 201, 202, 301, 302, 401, 402, 601, 602, 701, and 702 of the steel pipe feeding system 210, 310, 410, 510, 610, 710 are in a vertical state. When the roller is rotated, the end height of the roller is higher than the height of each of the rails 901 to 910, so that the main body of the corrugated steel pipe can freely rotate at the top of the rails 901 to 910 together with the rotating roller. .

As shown in Fig. 2 and 5, the flange auto-welding apparatus 200 is located in the body of the corrugated steel pipe to which the flange is temporarily bonded to the third rail (903), the contact surface between the flange and the corrugated steel pipe through the expansion process It is a device for welding construction by close contact. This flange auto welding device 200 is provided with a first steel pipe feed system 210, the tower frame 220 and the auto welder (230).

The first steel pipe feeding and feeding system 210 hinges two first and second guide operating shafts 201 and 202 arranged at predetermined intervals, and rotates a roller coupled to the ends of the operating shafts 201 and 202. It has a chain power transmission mechanism using an electric motor. For example, the basic state is when the first and second guide operating shafts 201 and 202 are hinged in opposite directions to be horizontal.

Subsequently, when the second guide operating shaft 202 is operated vertically while the first guide operating shaft 201 is horizontal, the main body of the corrugated steel pipe rolling down is the third rail near the flange auto welding device 200. It is stopped at 903. Subsequently, when the first guide operating shaft 201 becomes vertical again, the main body of the corrugated steel pipe is spaced apart from the third rail 903, and the rotatable state by the rollers of the respective guide operating shafts 201 and 202 is maintained. do.

On the other hand, the tower frame 220 is provided with an elevator device 222 using an electric deceleration motor 221, a pulley, a chain, and a vertical rail 222 on the upper part, and the elevator device 222 is crimped by lifting and lowering. The rotating mechanism 224 is provided. The compression rotating mechanism 224 is provided with a first compression roller 225 positioned below and rotating by a hydraulic motor, and a second compression roller 227 positioned above and movable up and down by the hydraulic actuator 226. Equipped. By the operation of these first and second pressing rollers 225 and 227, the temporarily welded flange and corrugated steel pipe are rotated on the rollers of the above-described guide operating shafts 201 and 202 while being in close contact with each other.

At this time, the welding gun of the auto welder 230 is fixed near the crimp rotation mechanism 224 by the support so that the welding rod is positioned in the contact line between the flange and the corrugated steel pipe closely contacted with each other.

Therefore, since the welding machine 230 performs welding while the temporary welded flange and the corrugated steel pipe rotate during the operation of the guide operating shafts 201 and 202 and the compression rotating mechanism, the contact line between the corrugated steel pipe and the flange is completely joined. This completes the basic flanged corrugated steel pipe.

This flanged corrugated steel pipe is moved to the coating process as follows.

That is, in the coating process, the second guide operating shaft 202 is hinged in a horizontal state among the first guide operating shaft 201 and the second guide operating shaft 202, which is vertical, and the first guide. When the working shaft 202 moves slightly to the right, the flanged corrugated steel pipe rolls along the inclined third rail 903 and fourth rail 904 to reach the second lifting means 923.

As shown in FIG. 6, the second lifting means 923 is a hook-type working arm hinged by the hydraulic strut 926 in the up and down circumferential direction, and is similar to the first lifting means mentioned above. Lifts the topographic corrugated steel pipe and serves to transport to the fifth rail (905).

The preheating device 300 of the fifth rail 905 has the same type as the above-described steel pipe feeding and feeding system, and the second steel pipe feeding and feeding system 310 which stops, rotates and feeds the rolled down steel pipe, A heating unit 320 connected to a pipeline 321 from a gas supply source and combusting the supplied gas to generate a flame in the burner nozzle 322, and a contact sensor unit 311 for position control of the flanged corrugated steel pipe. )

The second steel pipe feeding system 310 rotates the flanged corrugated steel pipe with the rollers of the guide operating shafts 301 and 302. The heating unit 320 arranges a plurality of burner nozzles 322 in a straight line to generate a flame. Thus, the flange and the whole body of the flanged corrugated steel pipe are heated evenly.

Referring back to Figures 2 and 3, the first resin coating device 400 is the third steel pipe feed and move up and down to coat the adhesive resin, such as polyethylene on the inner and outer surfaces of the heated flanged corrugated steel pipe Provide system 410. The third steel pipe feeding and lowering rotation system 410 is respectively coupled to the pulley type lifting means 924 coupled to both side ends of the rectangular first resin powder box 420, and the lifting means 924, respectively. At the same time as rotating the hydraulic roller, it consists of guide operating shafts (401, 402) hinged in different directions, respectively.

In particular, the first resin coating device 400 further includes a high pressure blower 450 and is configured to pressurize the high pressure air to the lower chamber 454 of the first resin powder box 420 through the duct 451. . When viewed from the side, the first resin powder box 420 has an upper chamber 453 filled with an adhesive resin, a diaphragm 452 having a plurality of fine holes, a duct 451 and a lower chamber 454 therethrough. By spraying the supplied high-pressure air into the upper chamber 453 through the holes of the diaphragm 452, the adhesive resin powder is blown off in the air of the upper chamber 453 in the resin coating operation. .

Further, the hydraulic rollers 401 and 402 after the pulley lifting means 924 of the third steel pipe feeding and lowering rotation system 410 are lowered into the upper chamber 453 of the first resin powder box 420. ) Rotates, resulting in the heated flanged corrugated steel pipe rotating inside the upper chamber 453. At this time, all the surfaces of the heated flanged corrugated steel pipe is adhesively bonded to the coating.

Subsequently, the third steel tube feeding and elevating rotation system 410 elevates the pulley type elevating means 924, and then the sixthly coated flanged primary sheathed corrugated steel tube that is primarily coated and still maintains a high temperature. The second resin coating apparatus 500 is transferred along the rail 906.

The second resin coating apparatus 500 is filled with a general coating resin in the second resin powder box 421, and the same fourth steel pipe injection transfer and elevating rotation system (same as the mechanism of the first resin coating apparatus 400) 510 is provided.

The second resin coating apparatus 500 maintains a high temperature and further coats a general resin on the surface of the flanged coated wave steel pipe in which the adhesive resin is first coated.

Thus, the flange-coated corrugated steel pipe coated with the general resin through the second resin coating apparatus 500 is moved to the post-heating apparatus 600 along the seventh rail.

The post-heating device 600 has a configuration substantially the same as that of the above-mentioned line heating device 300, by using the guide operating shafts 601 and 602 and the heating unit 620 of the steel pipe feeding and feeding system 610, Reheat multiple coated flanged corrugated steel pipes. That is, the post-heating apparatus 600 smoothes the irregular resin adhered to the surface after passing through the second resin coating apparatus 500, thereby forming a homogeneous surface.

In addition, the flange-coated corrugated steel pipe heated by the post-heater 600 is transferred to the cooling apparatus 700 along the eighth rail 908 by the guide operating shafts 601 and 602 of the steel pipe feed and transfer system 610. do.

The cooling device 700 rotates the flanged sheathed corrugated steel pipe that is post-heated on the upper portion of the ninth rail 909 by using the guide operation shafts 701 and 702 of the steel pipe feeding and feeding system 710, thereby allowing natural cooling. Cool the flanged corrugated corrugated steel pipe.

The cooled flanged corrugated corrugated steel pipe is then moved to the tenth rail 910 by the guide operation shafts 701 and 702 of the steel pipe feeding and transporting system 710, and then transported to the finished product loading zone by a transportation means such as a forklift truck. do.

As described above, the manufacturing equipment of the flange-type coated corrugated steel pipe according to the present invention is a flange assembly welding welding device, a flange auto welding device, a line heating device, a first resin coating device, a second resin coating device, a post-heating device and cooling By sequentially arranging the device, PLC control panel, rail system, and basic equipment in the longitudinal direction of the rail, welding the flanges to the corrugated steel main body and then multi-coating continuously, there is a relatively short product completion cycle. .

In addition, the manufacturing facilities of the flange-type coated corrugated steel pipe according to the present invention has the advantage that the installation space can be effectively used because the above devices are arranged in a line.

In addition, the manufacturing equipment of the flange-type coated corrugated steel pipe according to the present invention is equipped with a centralized control panel that can be operated by about one person, can produce a large amount of steel pipe products with a small number of workers, which can significantly reduce the product cost There is an advantage.

In addition, the manufacturing equipment of the flange-type coated corrugated steel pipe according to the present invention is transferred to its own weight by the slope of the rail, and controlled by the steel pipe feed and transfer system attached to each device, so that the factory work line can be taken very short. Coated corrugated steel pipe products can be completed in large quantities in a relatively short time.

For example, the manufacturing equipment of the flanged coated corrugated steel pipe according to the present invention is capable of mass-producing about 100 meters of a large diameter flanged coated corrugated steel pipe having a diameter of about 6 meters and a diameter of about 2000 pies per day, and has excellent product productivity and workability.

In addition, the manufacturing facilities of the flange-type corrugated corrugated steel pipe according to the present invention can be mass-produced in all civil engineering and construction fields with the waterway facilities of golf courses, ski resorts, leisure towns, and related to the assembly construction problems and environmental water quality problems As a result, it is possible to meet the demand of the coated wave steel pipe which is continuously increasing.

In addition, the preferred embodiment of the present invention is disclosed for the purpose of illustration, those skilled in the art will be able to various modifications, changes, additions, etc. within the spirit and scope of the present invention, such modifications and modifications belong to the following claims You will have to look.

Claims (12)

In the manufacturing equipment of the flanged coated wave steel pipe which is coated with resin at both ends and coated with resin, A flange assembly welding device (100) for welding the flange to the corrugated steel pipe; A flange auto welding device (200) for producing a flanged corrugated steel pipe by pressing, rotating, and welding the tag welded flange and the body end of the corrugated steel pipe to each other; A line heating device (300) for heating the flange-shaped corrugated steel pipe by rotating it on the basis of an axis; A first resin coating device (400) for introducing the heated flanged corrugated steel pipe into a first resin powder filled with an adhesive resin to form an adhesive resin layer on a surface thereof; A second resin coating apparatus 500 for forming a general resin layer on the flange-type coated wave steel pipe in which the adhesive resin layer is formed; A post-heating device (600) for reheating the flanged cladding corrugated steel pipe in which the plurality of resin layers are formed to even the surface state; It comprises a cooling device 700 for rotating in the flange-shaped coated wave steel pipe to cool in the air, Wherein each device (100 ~ 700) is a facility of manufacturing a flanged coated wave steel pipe, characterized in that arranged sequentially in the longitudinal direction of the rail system (900). The method of claim 1, High pressure blower 450 for supplying high pressure air into the first and second resin coating apparatuses 400 and 500, and overall management from the installation of the flange to the cooling operation of the coated corrugated steel pipe with the flange And a centralized PLC control panel (800) for performing the control process. The method of claim 1, The rail system 900 is formed as a pair having a gap between the base set of the corrugated steel pipe, and a plurality of rails (901 to 910) installed between the devices (100 to 700) in the longitudinal direction and Equipment for manufacturing a flanged coated wave steel pipe, characterized in that the lifting means (921 ~ 925). The method of claim 1, The rail system 900 is formed so that the height gradually decreases from the start point to the end point in the longitudinal direction, so that the body of the corrugated steel pipe rolls down naturally by its own weight, characterized in that the facility of manufacturing a flange-type coated corrugated steel pipe. The method of claim 3, wherein The elevating means (921, 922) is a hook-type operation arm hinged in the upper and lower circumferential direction by the hydraulic strut 929, respectively, coincides with the axis of the main body 30 of the corrugated steel pipe to the axis of the flange (20) Flange type corrugated steel pipe manufacturing equipment, characterized in that. The method of claim 1, The flange assembly welding welding apparatus 100 is fixed to the transfer bed 103 and the moving plate of the transfer bed 103 and the transfer bed 103 for moving the upper plate 106 in the up and down direction of the feed shaft in the form of a workbench Flange-type covered wave, characterized in that it is provided with two flange fixing roller shafts (101, 102) and a tag welding machine (104), each of which has a slit (107) formed on each roller to seat the flange (20). Steel pipe manufacturing equipment. The method of claim 1, The flange auto welding device 200 is a device for welding the contact surface between the flange and the corrugated steel pipe by placing the main body of the corrugated steel pipe with the flange available on the third rail (903), the steel pipe injection feed system 210 and the tower frame (220) and the automatic welding machine (230), characterized in that the manufacturing equipment of the flange-type coated corrugated steel pipe. The method of claim 7, wherein The steel pipe feeding and transporting system 210 hinges two first and second guide operating shafts 201 and 202 arranged at predetermined intervals, and rotates a roller coupled to ends of the operating shafts 201 and 202. A facility for manufacturing a flanged coated corrugated steel pipe, characterized by having a chain power transmission mechanism using an electric motor. The method of claim 7, wherein The tower frame 220 is an elevator device 223 using an electric reduction motor 221, a pulley, a chain, and a vertical rail 222 on the upper side, and a compression rotating mechanism that is lifted and lowered by the elevator device 223 ( 224), The compression rotating mechanism 224 is located below the first compression roller 225 which is rotated by the hydraulic motor, and the second compression roller 227 located above and movable up and down by the hydraulic actuator 226. Equipment for manufacturing flanged coated wave steel pipe, characterized in that consisting of. The method of claim 1, The preheater 300 is connected to the steel pipe injection and transfer system 310 for stopping, rotating, and transporting the main body of the rolled corrugated steel pipe, and the gas supplied from the external gas source to the pipeline 321 to burn the supplied gas. Equipment for manufacturing a flanged coated corrugated steel pipe, characterized in that consisting of a heating unit 320 for generating a flame in the burner nozzle (322), and a contact sensor unit (311) for position control of the flanged corrugated steel pipe. The method of claim 1, The resin coating device (400, 500) is pulley type lifting means 924 coupled to both side end portions of the rectangular resin powder boxes (420, 421) to coat the resin on the inner and outer surfaces of the heated flanged corrugated steel pipe , 925, and the steel pipe feeding and lowering rotation system composed of guide operating shafts 401 and 402 coupled to the elevating means 924 and 925 to rotate hydraulic rollers and to hinge in different directions, respectively. 410 and 510, respectively, characterized in that the flanged coated corrugated steel pipe manufacturing equipment. The method of claim 11, The resin powder box 420 of the first resin coating device 400 is formed by passing through the upper chamber filled with resin, the diaphragm 452 having a plurality of minute holes, and the duct 451 of the high pressure blower 450. A lower chamber, The high-pressure air supplied through the duct 451 is injected into the upper chamber through the holes of the diaphragm 452, so that the resin powder whirls in the air inside the resin powder box 420 during the coating operation. Equipment for manufacturing a flanged coated corrugated steel pipe, characterized in that it is used to coat the body of the flanged corrugated steel pipe.