KR20130087695A - Ramification pipe and manufacturing method - Google Patents

Ramification pipe and manufacturing method Download PDF

Info

Publication number
KR20130087695A
KR20130087695A KR1020120008740A KR20120008740A KR20130087695A KR 20130087695 A KR20130087695 A KR 20130087695A KR 1020120008740 A KR1020120008740 A KR 1020120008740A KR 20120008740 A KR20120008740 A KR 20120008740A KR 20130087695 A KR20130087695 A KR 20130087695A
Authority
KR
South Korea
Prior art keywords
pipe
burring
metal pipe
branch
branch pipe
Prior art date
Application number
KR1020120008740A
Other languages
Korean (ko)
Inventor
김선환
Original Assignee
드림산업 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 드림산업 주식회사 filed Critical 드림산업 주식회사
Priority to KR1020120008740A priority Critical patent/KR20130087695A/en
Publication of KR20130087695A publication Critical patent/KR20130087695A/en

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
    • B23P23/04—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass for both machining and other metal-working operations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L41/00—Branching pipes; Joining pipes to walls
    • F16L41/02—Branch units, e.g. made in one piece, welded, riveted
    • F16L41/021—T- or cross-pieces

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Branch Pipes, Bends, And The Like (AREA)

Abstract

PURPOSE: A branch run and a method for manufacturing the same are provided not to interfere the flow of a fluid by arranging an oval branch pipe with the size of a caliber of a metal pipe in the metal pipe, forming the caliber of one end of other metal pipe to have the same size with the caliber of the oval branch pipe and welding the pipes. CONSTITUTION: A branch run includes two first and second metal pipes (10, 20). The first metal pipe comprises an oval branch pipe (12), a burring unit (21), a welding unit (30) and a T-shaped branch pipe (100). The oval branch pipe is transversely burred in the same size with the caliber at the upper part of the center by an oval burring punch and is formed to protrude so that an oval form (13) is formed. The burring unit burrs the caliber of one end of the second metal pipe with a load of a load punch so that the caliber is able to have a lower end in an oval shape with the same size with the oval branch pipe. The welding unit locates the burring unit in one end of the second metal pipe to correspond to the position of the oval branch pipe and welds the burring unit of the second metal pipe with the oval branch pipe. The T-shaped branch pipe is formed so that the first and second metal pipes have same caliber size.

Description

Branch pipe and manufacturing method

The present invention relates to a branch pipe and a method for manufacturing the same, and more particularly, branch pipe that can be moved in the same flow rate without disturbing the flow of fluid when manufacturing the branch pipe using two copper pipes of the same metal pipe standard And to a method for producing the same.

As noted, branch piping is widely used throughout industrial facilities such as water supply and sewage facility piping, water treatment facilities, heating piping, and firefighting piping.

The branch piping is divided into expansion type and non-expansion type.

Expanded branch pipes are disclosed in the previously filed patent 10-2010-0019329 method for producing a branch pipe of a metal pipe as follows.

In the method of manufacturing the branch pipe of the metal pipe, the metal pipe is cut to a predetermined size to fix the metal pipe to be seated on the lower die formed with the semi-circular groove formed on the upper part of the base fixing plate, and the clamps provided at both ends of the upper die to the second cylinder. The elliptical rod punch installed in the shaft rod is lowered by the first step of driving and fixing the metal pipe and the forward operation of the cylinder installed at right angles to the metal pipe seated on the upper and lower dies through the first step. The second process of drilling a right angle direction by the burring punch in the inside, and the rod punch having a punching function and burring function in the inside of the metal pipe punched through the second process and rotated 90 degrees inside the burring punch A third process having an oval rod punch engaged with a burring punch and having a burring function; The fourth step of forming the branch pipe by the rod punch coupled to the shaft rod by moving the burring punch in the vertical direction of the metal pipe to bury the perforated portion of the metal pipe to the outside, and the fourth process The fifth process of returning the burring punch to the inside of the burring branch pipe metal pipe by the forward operation, and through the fifth process, the rotating body coupled to the shaft rod and the pulley coupled to the motor shaft are moved downward. The sixth process of completing the branch pipe of the metal pipe by processing the branch pipe to a certain height by rotating the rotating body connected to the pulley and the belt by the drive of the lower part, and through the sixth process A seventh process of separating the rod punch and the burring punch by rotating the rod punch connected to the burring punch in the reverse direction by 90 degrees, and performing the backward operation of the cylinder through the seventh process. The eighth process of separating the punch completely from the burring punch, and the ninth process of unwinding the clamps of the upper and lower dies through the eighth process and separating the metal pipe formed with the branch pipe.

The expansion pipe branch pipe as described above forms a branch pipe by moving the burring punch in the vertical direction in the inside of the metal pipe to burring out the perforated portion of the metal pipe to the outside so that the branch pipe has a smaller diameter than the metal pipe. will be.

The expanded branch pipe has a problem that the flow of the flow is reduced and the flow rate is reduced because the diameter of the branch pipe is smaller than the metal pipe.

Non-expansion branch piping is a method of drilling holes in metal pipes according to the standard for processing by standard, and joining them by welding by R-processing the outer diameter of another metal pipe thereon.

When two metal pipes are used in the non-expanded branch pipe, the weldability decreases because the thickness of the metal pipe and the metal pipe connecting part decreases. There is a problem falling.

The present applicant has developed a branched pipe and a method of manufacturing the branched pipe which can be flowed in the same manner without disturbing the flow of fluid using copper pipes, two identical metal pipe standards, when manufacturing the branched pipe.

It is an object of the present invention to provide a branched pipe and a method of manufacturing the same in which a flow rate can be moved equally without disturbing the flow of fluid when the branched pipe is manufactured using two identical metal pipe standards.

Another object of the present invention is to form an elliptical branch pipe in the size of the diameter of one metal pipe and the diameter of one end of another metal pipe is formed to match the elliptical branch pipe to weld each other to prevent the flow of fluid It is an object of the present invention to provide a branch pipe and a method of manufacturing the same in which the flow rate can be moved in the same manner.

Still another object of the present invention is to provide a branched pipe using two metal pipes having the same diameter so as to provide a high quality branched pipe having a uniform product and a method of manufacturing the same.

In the branch pipe of the present invention for achieving the above object, in the branch pipe,

Two first and second metal pipes having the same diameter, and the first metal pipe is an elliptical branch pipe which is protruded by an elliptical burring punch in the same width as the diameter at the center in the transverse direction to form an elliptical hole; And a burring portion in which an elliptical branching pipe and a lower end of the second metal pipe have an oval branch pipe and a lower end having the same size as a rod of a rod punch, and the second metal pipe in an elliptical branch pipe of the first metal pipe. A welded portion in which a burring portion of one side of the pipe coincides and welds the oval branch pipe and the burring portion of the second metal pipe to be attached to each other, and the first metal pipe and the second metal pipe have a tee shape branch having the same diameter. Characterized in that the pipe is formed.

The first elliptical branch pipe protruding in the same width as the aperture on the center of the first metal pipe and the burring portion formed by burring one end diameter of the second metal pipe to the same size as the elliptical branch pipe are formed to match. It is characterized in that the flow rate of the metal pipe can be equally moved to the second metal pipe without disturbing the flow of the fluid.

The burring punch is characterized in that the lower body portion is formed in an elliptical shape of the same width as the diameter of the first metal pipe, the inclined surface is formed to be inclined downward to the outside in which the screw groove is formed in the upper center.

The upper end portion of the branch pipe of the first metal pipe and the lower end of the burring part of the second metal pipe are processed in a planar state, and the oval hole of the branch pipe and the burring hole of the burring part are coupled to match.

The present invention provides a method for manufacturing a branch pipe, the first process (S1) for cutting two first and second metal pipes having the same diameter to a predetermined size, and the first metal pipe to be seated on the base fixing in the transverse direction A second process (S2) for fixing, a third process (S3) for drilling the hole in an elliptical shape so that the screw can be inserted into the center upper portion of the first metal pipe (S3), and the perforated interior of the first metal pipe A fourth step (S4) of installing a burring punch in which a screw groove is formed at the center in an elliptical shape, and a fifth coupling the screw groove of the burring punch and the rod screw of the burring machine through the drilled hole of the first metal pipe. Process (S5) and the sixth process (S6) by forming the branch pipe by operating the burring machine to move the elliptical burring punch up and burring the portion drilled in the first metal pipe to the upper side in the elliptical shape to the same as the aperture width (S6) ) And the minute A seventh process (S7) of cutting the branch pipe to a predetermined height to complete the branch pipe on the first metal pipe, and an eighth process (S8) of fixing the second metal pipe to the clamp in a vertical direction; A ninth step (S9) of forming a burring hole of a burring portion by burring the upper hole of the second metal pipe to the same size as the elliptical hole of the branch pipe with a rod of a rod punch; A tenth process (S10) of processing the upper end of the burring hole burring to the same size in a horizontal state, and the eleventh position to be welded so as to match the branching pipe of the first metal pipe and the burring portion of the second metal pipe to match Through the step (S11) characterized in that the T-shaped branch pipe of the same diameter is manufactured.

In the eighth process, the rod of the rod punch is inserted into the upper hole of the second metal pipe, and the burring hole of the burring portion is formed to have an elliptical shape by pressing the upper and the upper sides of the second metal pipe with the pressure punch. .

As described above, the present invention has the effect that the flow rate can be moved equally without disturbing the flow of the fluid when manufacturing the branch pipe by using the same copper pipe of the same metal pipe standard.

In addition, an elliptical branching pipe is formed in one metal pipe with an aperture size, and one end diameter of another metal pipe is formed to match the elliptical hole branching pipe so that the flow of the fluid is the same without interrupting the flow of the fluid. There is an effect that can be moved.

In addition, since the branch pipe is formed using two metal pipes of the same diameter, there is an effect of providing a high quality branch pipe having product uniformity.

1 is an exploded perspective view of a branch pipe according to the present invention.
2 is a perspective view of a branch pipe according to the present invention.
Figure 3 is a branch pipe cross-sectional view according to the present invention.
Figure 4a, 4b is a state diagram forming an elliptical hole with a perforator in the first metal pipe according to the present invention.
5 is a configuration of a burring punch and a burring machine according to the present invention.
Figure 6a, 6b is a state diagram forming a branching pipe with a burring punch and a burring in the first metal pipe according to the present invention.
Figure 7a, 7b is a state diagram forming a burring hole in one end diameter in the second metal pipe according to the present invention.
8 is a state in which a branch pipe of the first metal pipe and a burring portion of the second metal pipe are welded to each other to form a branch pipe.
9 is a process chart showing a branch pipe manufacturing process according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. It should be understood, however, that the invention can be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

1 is an exploded perspective view of a branch pipe according to the present invention, Figure 2 is a perspective view of a branch pipe according to the present invention, Figure 3 is a cross-sectional view of the branch pipe according to the present invention, Figure 4a, 4b is a first according to the present invention 5 is a state diagram of forming an elliptical hole in a metal pipe with a perforator, and FIG. 5 is a configuration diagram of a burring punch and a burring machine according to the present invention, and FIGS. 6A and 6B illustrate a burring punch and a burring machine in the first metal pipe according to the present invention. Figure 7a, 7b is a state diagram forming a branching pipe, Figure 7a, 7b is a state diagram forming a burring hole in one side end diameter in the second metal pipe according to the present invention, Figure 8 is a branching pipe and the second metal of the first metal pipe The burring portions of the pipes are welded to each other to form a branch pipe, and FIG. 9 is a process diagram showing a branch pipe manufacturing process according to the present invention.

The present invention relates to a branch pipe and a method of manufacturing the same, and more particularly, branch pipe which can be moved in the same flow rate without disturbing the flow of fluid when manufacturing a branch pipe using two copper pipes of the same metal pipe standard And to a method for producing the same.

1 to 8, the branch pipe 100 of the present invention includes two first and second metal pipes 10 and 20 having the same aperture 11, and the first metal pipe. 10 forms an elliptical branch pipe 12 protruding by the elliptical burring punch 50 to the same width as the aperture 11 in the center upper portion in the transverse direction to form the elliptical hole 13.

One end diameter of the second metal pipe 20 is formed by a rod 61 of the rod punch 60 to form a burring portion 21 in which the elliptical branch pipe 12 and the lower end have an elliptical shape having the same size. .

The elliptical branch pipe 12 of the first metal pipe 10 is positioned to coincide with one side burring portion 21 of the second metal pipe 20 and the elliptical branch pipe 12 and the second The burring portion 21 of the metal pipe 20 is welded to be attached to each other to form a welding portion 30.

The elliptical branch pipe 12 of the first metal pipe 10 and the burring portion 21 of the second metal pipe 20 are welded to form a T-shaped branch pipe 100 having the same diameter.

The elliptical branch pipe 12 and the elliptical branch pipe 12 protruding in the same width as the aperture 11 on the center of the first metal pipe 10 and the one end diameter of the second metal pipe 20 are formed in the elliptical branch pipe 12. By forming the burring portion 21 burring to the same size and the flow of the fluid to the second metal pipe 20 without being obstructed the flow of the fluid of the first metal pipe (10).

The upper end of the branching pipe 12 of the first metal pipe 10 and the lower end of the burring part 21 of the second metal pipe 20 are processed in a planar state and an elliptical hole of the branching pipe 12 ( 13) and the burring hole 22 of the burring portion 21 are to be matched.

The burring punch 50 is an elliptical shape of the same width as the diameter of the first metal pipe 10 of the lower body portion 50c having the inclined surface 50b with the screw groove 50a formed at the upper center thereof inclined downward. Formed.

Burr of burring portion 21 burring one end diameter of the second metal pipe 20 to the rod 61 of the rod punch 60 to the same size as the elliptical hole 13 of the branch pipe (12) The ring hole 22 is formed in an oval shape.

Figure 4a, 4b is a state diagram to form an elliptical hole with a perforator in the first metal pipe according to the present invention, Figure 5 is a block diagram of a burring punch and a burring machine according to the present invention, Figure 6a, 6b according to the present invention Figure 7a and 7b is a state diagram forming a branching pipe with a burring punch and a burring in the first metal pipe, Figure 7a, 7b is a state diagram for forming a burring hole in one end diameter in the second metal pipe according to the present invention, Figure 8 The branched pipe of the first metal pipe and the burring portion of the second metal pipe are welded to each other to form a branched pipe. FIG. 9 is a process diagram showing a branched pipe manufacturing process according to the present invention. It is as follows.

In the method of manufacturing a branch pipe according to the present invention as shown in FIGS. 4A to 9, a first process of cutting two first and second metal pipes 10 and 20 having the same aperture 11 to a predetermined size ( S1), a second process (S2) of fixing the first metal pipe (10) to be seated on the base holder in the transverse direction, and a screw in the center upper portion of the first metal pipe (10) with a puncher (40). The third step (S3) for drilling the hole (11a) in an elliptical shape so that it can be inserted, and a burring punch (50) in which a screw groove (50a) is formed in the center in an elliptical shape in the perforated interior of the first metal pipe (10). The fourth step (S4) of installing the), the screw groove (50a) of the burring punch (50) and the rod screw of the burring machine (51) through the drilled hole (11a) of the first metal pipe (10) 52 is combined with the fifth process (S5), by operating the burring machine 51, the elliptical burring punch (50) is moved upwards, the diameter of the hole drilled on the first metal pipe (10) (11) The sixth step (S6) to form a branching pipe (12) by burring to the upper side in the same oval shape as the width, and cutting the branching pipe (12) by a certain height to the first metal pipe (10) A seventh process (S7) to complete the branch pipe 12, the eighth process (S8) for fixing the second metal pipe 20 to the clamp 70 in the vertical direction, and the second metal pipe ( Burring the upper hole of the 20 to the rod 61 of the rod punch 60 to the same size as the elliptical hole 13 of the branch pipe 12 to form a burring hole 22 of the burring portion 21 Ninth process (S9), and the tenth process (S10) for processing the upper end of the burring hole 22, the second metal pipe 20 is the same size as the oval hole 13 in the horizontal state, and Tees of the same diameter are passed through the eleventh process (S11) of locating the branching pipe 12 of the first metal pipe 10 and the burring portion 21 of the second metal pipe 20 to be matched and attached to each other. A minute Pipe 100 will be manufactured.

The burring punch 50 is an elliptical shape of the same width as the diameter of the first metal pipe 10 of the lower body portion 50c having the inclined surface 50b with the screw groove 50a formed at the upper center thereof inclined downward. Formed.

In the eighth step, the rod punch rod is inserted into the upper hole of the second metal pipe, and the burring hole of the burring portion is formed in an elliptical shape by pressing the upper and lower sides of the second metal pipe with a pressure punch (not shown). Will be.

As described above, when the branch pipe 100 is manufactured by using two copper pipes having the same metal pipe standard, the flow of the fluid is not disturbed and the flow rate is equally moved.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, The present invention may employ various changes, modifications, and equivalents. It is clear that the present invention can be suitably modified and applied in the same manner. Therefore, the above description does not limit the scope of the present invention, which is defined by the limitations of the following claims.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the present invention.

10: first metal pipe 11: diameter
12: branch branch 13: oval hole
20: second metal pipe 21: burring portion
22: burring hole 30: weld
40: punching machine 50: burring punch
50a: strand groove 50b: slope
50: oval body 51: burring machine
52: road screw 60: road punch
61: rod 70: clamp
100: branch piping

Claims (6)

In branch piping,
Two first and second metal pipes having the same diameter, and the first metal pipe is an elliptical branch pipe which is protruded by an elliptical burring punch in the same width as the diameter at the center in the transverse direction to form an elliptical hole; And a burring portion in which an elliptical branching pipe and a lower end of the second metal pipe have an oval branch pipe and a lower end having the same size as a rod of a rod punch, and the second metal pipe in an elliptical branch pipe of the first metal pipe. A welded portion in which a burring portion of one side of the pipe coincides and welds the oval branch pipe and the burring portion of the second metal pipe to be attached to each other, and the first metal pipe and the second metal pipe have a tee shape branch having the same diameter. Branch piping, characterized in that the pipe is formed.
The method of claim 1,
The first elliptical branch pipe protruding in the same width as the aperture on the center of the first metal pipe and the burring portion formed by burring one end diameter of the second metal pipe to the same size as the elliptical branch pipe are formed to match. The branch pipe according to claim 1, wherein the flow rate of the metal pipe can be equally moved without disturbing the flow of the metal pipe.
The method of claim 1,
The burring punch is a branch pipe manufacturing method, characterized in that the lower body portion formed with an inclined surface to be inclined downward downward the screw groove is formed in the upper center of the same width as the diameter of the first metal pipe.
The method of claim 1,
The upper end of the branch pipe of the first metal pipe and the lower end of the burring part of the second metal pipe is processed in a planar state and the branch pipe, characterized in that the oval hole of the branch pipe and the burring hole of the burring part is matched.
In the branch pipe manufacturing method,
A first process (S1) of cutting two first and second metal pipes having the same diameter to a predetermined size, a second process (S2) of fixing the first metal pipe to be seated on a base fixing in a transverse direction, and The third process (S3) for drilling the hole in an elliptical shape so that the screw can be inserted into the central upper portion of the first metal pipe (S3), and the screw groove is formed in the center in the perforated interior of the first metal pipe in an elliptical shape A fourth step (S4) of installing a burring punch, a fifth step (S5) of coupling a screw groove of a burring punch and a rod screw of a burring machine through the drilled hole of the first metal pipe, and the burring machine The sixth step (S6) of forming a branching pipe by operating the elliptical burring punch is moved up and burring the portion drilled in the first metal pipe to the upper part of the elliptical to the same as the aperture width (S6), and the branch pipe to a certain height By cutting A seventh process (S7) in which the branch pipe is completed in one metal pipe, an eighth process (S8) of fixing the second metal pipe to the clamp in the vertical direction, and a rod punch in the upper hole of the second metal pipe. A ninth process (S9) of forming a burring hole of a burring portion by burring to the same size as the elliptical hole of the branch pipe with a rod of (S9), and horizontally an upper end of the burring hole having the same size as the elliptical hole of the second metal pipe. Tee of the same diameter through the tenth step (S10) to be processed in the state, and the eleventh step (S11) to position the branching pipe of the first metal pipe and the burring portion of the second metal pipe to match and weld to each other. Branch piping manufacturing method characterized in that the branch pipe is manufactured.
The method of claim 5,
In the eighth process, the rod of the rod punch is inserted into the upper hole of the second metal pipe, and the burring hole of the burring portion is formed to have an elliptical shape by pressing the upper and the upper sides of the second metal pipe with the pressure punch. Branch pipe manufacturing method.
KR1020120008740A 2012-01-30 2012-01-30 Ramification pipe and manufacturing method KR20130087695A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020120008740A KR20130087695A (en) 2012-01-30 2012-01-30 Ramification pipe and manufacturing method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020120008740A KR20130087695A (en) 2012-01-30 2012-01-30 Ramification pipe and manufacturing method

Publications (1)

Publication Number Publication Date
KR20130087695A true KR20130087695A (en) 2013-08-07

Family

ID=49214309

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020120008740A KR20130087695A (en) 2012-01-30 2012-01-30 Ramification pipe and manufacturing method

Country Status (1)

Country Link
KR (1) KR20130087695A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017078231A1 (en) * 2015-11-05 2017-05-11 (주)성광 Method for coupling fitting pipe and pipe
KR102229093B1 (en) 2020-12-28 2021-03-16 김진희 Manufacturing apparatus and method of branch pipe

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017078231A1 (en) * 2015-11-05 2017-05-11 (주)성광 Method for coupling fitting pipe and pipe
KR102229093B1 (en) 2020-12-28 2021-03-16 김진희 Manufacturing apparatus and method of branch pipe

Similar Documents

Publication Publication Date Title
KR101179150B1 (en) metal pipe of tubulate manufacture method and manufacture apparatus
KR101064578B1 (en) metal pipe of tubulate manufacture apparatus and manufacture method
CN100460129C (en) Copper-aluminum composite pipeline, processing equipment and processing method thereof
KR101221575B1 (en) metal pipe of tubulate manufacture method and manufacture apparatus
CN104209397A (en) Punching die and punching method for pipeline of automotive air conditioner
BRPI0921445A2 (en) An edge-of-a-winding-instrument shape orthodontic appliance of a UOE metal tube
KR100886881B1 (en) Manufacturing apparatus of pipe with branch joint, manufacturing method and pipe with branch joint using thereof
KR20130087695A (en) Ramification pipe and manufacturing method
JP5425148B2 (en) Clamp ring
US9555463B2 (en) Piping system
US20150367394A1 (en) Tube flanging method
KR101507284B1 (en) Connecting clamp manufacturing apparatus for plastic pipe and the manufacturing method
CN201439847U (en) Connecting structure of valve body and pipe and pipe matching with valve body
CN102825395A (en) Brazing structure for connecting pipe and valve seat
JP2007010199A (en) Multiple-way pipe and method of manufacturing the same
KR100284098B1 (en) Aaaaa
JP5389587B2 (en) Thin wall bent pipe member forming method and thin wall bent pipe member manufacturing apparatus
EP2907595A1 (en) Method for the production of a sleeve provided with a through-hole extending in the radial direction, as well as sleeve and pipe coupling provided with the sleeve
CN117858772A (en) Method and device for producing T-branches of pipes
JP5944570B1 (en) Thin pipe connection method and pipe screw forming apparatus
CN103906588B (en) The manufacture method of tubular part and the tubular part manufactured by the method
CN102294578A (en) Processing method of fire-fighting spraying and cooling device
RU2194909C1 (en) Method of manufacture of pipe line unit and pipe line unit used for realization of this method
KR200417670Y1 (en) device of shaping an oil separator case
US20050028572A1 (en) Method for the production of a metal tube, in particular a gas distributor tube for vehicle airbags

Legal Events

Date Code Title Description
A201 Request for examination
A302 Request for accelerated examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right