KR20080081777A - Connector for high-pressure gas pipe - Google Patents

Connector for high-pressure gas pipe Download PDF

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Publication number
KR20080081777A
KR20080081777A KR1020070022863A KR20070022863A KR20080081777A KR 20080081777 A KR20080081777 A KR 20080081777A KR 1020070022863 A KR1020070022863 A KR 1020070022863A KR 20070022863 A KR20070022863 A KR 20070022863A KR 20080081777 A KR20080081777 A KR 20080081777A
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KR
South Korea
Prior art keywords
connector
pressure gas
gas pipe
pipe
inclined surface
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KR1020070022863A
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Korean (ko)
Inventor
문병출
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월드파워텍주식회사
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Priority to KR1020070022863A priority Critical patent/KR20080081777A/en
Publication of KR20080081777A publication Critical patent/KR20080081777A/en

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    • 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
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
    • F16L19/0212—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means
    • F16L19/0218—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means comprising only sealing rings
    • 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
    • F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
    • F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
    • F16L19/0206—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the collar not being integral with the pipe

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Non-Disconnectible Joints And Screw-Threaded Joints (AREA)

Abstract

A connector for a high pressure gas pipe is provided to preclude a gas leakage, obtain high sealing efficiency, and simplify the connector structure by inserting packings in a combined part between the connector and fittings. A connector(10) for a high pressure gas pipe connects pipes(100). The connector has one side which is combined with the pipes, and the other side which is formed with annular grooves(14) on inclined surfaces having inclined protrusions(12). Packings(16) are combined with the annular grooves. The fittings are formed with inclined surfaces(24) which are expanded to the outside. The inclined surfaces of the connector are inserted to the inclined surfaces of the connector with the packings, and the insertion part is fastened with combining nuts(18).

Description

고압 가스배관용 연결구. {connector for high-pressure gas pipe}High Pressure Gas Pipe End Connections. {connector for high-pressure gas pipe}

도 1은 본 발명의 바람직한 제 1실시예에 따른 고압 가스배관용 연결구의 구조를 분리하여 도시한 분리사시도.1 is an exploded perspective view showing a separate structure of the connector for high-pressure gas pipe according to the first embodiment of the present invention.

도 2는 도 1의 결합상태를 절개하여 도시한 단면도.FIG. 2 is a cross-sectional view of the coupling state of FIG. 1;

도 3은 본 발명의 제 2실시예에 따른 고압 가스배관용 연결구의 분리사시도.Figure 3 is an exploded perspective view of a high pressure gas pipe connector according to a second embodiment of the present invention.

도 4는 본 발명의 실시예에 따른 고압 가스배관용 연결구의 결합상태를 도시한 사시도.Figure 4 is a perspective view showing a coupling state of the high pressure gas pipe connector according to an embodiment of the present invention.

본 발명의 고압 가스배관용 연결구에 관한 도 3의 결합상태를 도시한 사시도.3 is a perspective view showing a coupled state of Figure 3 with respect to the connector for high pressure gas pipe of the present invention.

도 5는 도 4를 절개하여 도시한 단면도.FIG. 5 is a cross-sectional view taken along the line of FIG.

도 6은 본 발명의 제 3실시예에 따른 고압 가스배관용 연결구의 분리사시도.Figure 6 is an exploded perspective view of the connector for high-pressure gas pipe according to the third embodiment of the present invention.

도 7은 도 6의 결합상태를 절개하여 도시한 단면도.FIG. 7 is a cross-sectional view of the coupling state of FIG. 6;

도 8은 본 발명의 제 4실시예에 따른 고압 가스배관용 연결구의 결합상태를 도시한 단면도.Figure 8 is a cross-sectional view showing a coupling state of the connector for high-pressure gas pipe according to the fourth embodiment of the present invention.

도 9는 종래의 기술에 따른 배관 연결구의 구조를 절개하여 도시한 단면도.9 is a cross-sectional view showing the structure of the pipe connection in accordance with the prior art.

〈도면의 주요부분에 대한 부호의 설명〉<Explanation of symbols for main parts of drawing>

10: 연결구 12: 경사턱10: connector 12: inclined jaw

14, 56: 환홈 16: 패킹14, 56: round groove 16: packing

20, 50, 60: 피팅 22, 32, 42, 52: 나사부20, 50, 60: fitting 22, 32, 42, 52: thread

24, 54: 경사면 30: 엘보우(Elbow)24, 54: slope 30: elbow

40: 티이(Tee) 62: 제 1밀착구40: Tee 62: first close contact

64: 제 2밀착구 66: 체결구64: second close contact 66: fastener

본 발명은 고압 가스배관용 연결구에 관한 것으로서, 보다 상세하게는 배관과 연결되는 연결구와 피팅의 결합부가 패킹으로 밀착되어져 누설을 방지하도록 이루어진 고압 가스배관용 연결구에 관한 것이다.The present invention relates to a high pressure gas pipe connector, and more particularly, to a high pressure gas pipe connector made of a coupling part of the connector and the fitting connected to the pipe to be in close contact with the packing to prevent leakage.

일반적으로 가스, 공기 등의 기체 및 유체 등의 유체(이하 '기체' 라 함)는 파이프 등의 관로로 형성된 배관을 통해 이송하게 되고, 이러한 배관을 연결하는 연결부, 일예로 피팅(Pitting; 이하 '피팅' 이라 함)을 사용하게 된다. 이러한 종래의 피팅은 널리 공지된 바와 같이, 직선 배관용 피팅과, 일정 각도로 꺽인 부위의 연결용 엘부우(Elbow)와, 'T' 형태 분배형(Tee) 및 '+' 형태의 교차형(Cross) 등(이하 '피팅' 이라 함)이 있다.In general, gas such as gas and air, and fluid such as fluid (hereinafter, referred to as 'gas') are transferred through a pipe formed by a pipe such as a pipe, and a connection part connecting the pipe, for example, a fitting (Pitting; Fittings'). Such conventional fittings are, as is well known, fittings for straight pipes, elbows for connecting at an angle, and 'T'-shaped distribution (Tee) and' + '-type crossovers ( Cross), hereinafter referred to as 'fitting'.

그런데, 다양한 방법을 통해 결합부의 누설을 방지하고 있고, 그 일예로서 도 9에서와 같이, 피팅(60)과 결합되는 체결구(66)를 조이면 피팅(60)과 밀착되는 제 1밀착구(62)와 파이프와 밀착되는 제 2밀착구(64)가 서로 맞물리면서 누설이 방 지되도록 이루어진다. 그런데, 이러한 종래의 기술에 따른 결합 구조는 누설 방지를 위해 별도의 제 1, 제 2의 구성요소를 필요로 하고, 각 구성요소 간의 밀착부위에 체결력을 필요로 함은 물론, 누설의 발생부위로 작용하며, 작업 중에나 장시간 사용 시 충격이나 진동 등에 의해 결합부위에 틈이 발생하고 누설되는 문제점이 있었다. 또한, 제 2밀착구(64)는 체결구(66)의 체결력에 의해 배관(100)과 밀착되어지는데 이때, 과도한 체결력이 작용하면 체결구(66)는 물론 배관(100)이 찌그러지거나 크랙이 발생하는 등의 손상 및 파손되며, 또는 체결력이 다소 미흡하여 그 연결부가 헐거워지면서 누설이 발생하는 문제점이 있었다.However, leakage of the coupling part is prevented through various methods, and as an example, as shown in FIG. 9, when the fastener 66 coupled to the fitting 60 is tightened, the first contact hole 62 closely contacted with the fitting 60 is shown. ) And the second close contact 64 in close contact with the pipe is engaged with each other to prevent leakage. However, the coupling structure according to the related art requires separate first and second components to prevent leakage, and requires fastening force to the close contact portion between the components, as well as to the occurrence of leakage. There is a problem in that a gap occurs and leaks at the coupling part due to impact or vibration during work or long time use. In addition, the second close contact 64 is brought into close contact with the pipe 100 by the fastening force of the fastener 66. At this time, if excessive fastening force is applied, the fastener 66 as well as the pipe 100 are crushed or cracked. There is a problem in that damage and breakage, such as occurs, or the tightening force is somewhat insufficient so that the connection is loose.

따라서, 상기한 바와 같은 문제점을 해결하기 위한 본 발명의 목적은 배관을 연결함에 있어서, 배관과 연결되는 연결구와 피팅의 결합부에 패킹을 삽입하여 누설을 방지함으로서 씰링효율을 높이고, 그 구조를 간소화하여 체결이 용이하도록 하는 배관연결용 연결구를 제공함에 있다.Accordingly, an object of the present invention for solving the above problems is to improve the sealing efficiency by simplifying the structure by inserting a packing in the coupling portion of the connector and the fitting connected to the pipe to prevent leakage in connecting the pipe To provide a connector for pipe connection to facilitate the fastening.

상기한 바와 같은 목적을 달성하기 위한 본 발명은, 배관(100)을 연결하는 연결구에 있어서; 일측이 상기 배관(100)과 결합되는 연결구(10)와, 상기 연결구(10)의 타측은 경사턱(12)을 가지는 경사면에 환홈(14)을 형성하여서 패킹(16)이 결합되며, 피팅(20)의 양측 나사부(22)의 내측면에는 외측으로 확장된 경사면(24)을 형성하고, 상기 연결구(10)의 경사면이 삽입되면서 패킹(16)으로 밀착되도록 체결너트(18)로 체결되며, 상기 연결구(10)에는 경사턱(12)의 전방으로 경사면이 형성되고, 상기 피팅(50)은 나사부(52)의 내측면이 외측으로 확장된 경사면(54)을 형 성하여서 패킹(16)이 결합되도록 이루어짐을 특징으로 한다.The present invention for achieving the above object, in the connector for connecting the pipe (100); One end of the connector 10 is coupled to the pipe 100 and the other side of the connector 10 is formed with an annular groove 14 in the inclined surface having an inclined jaw 12, the packing 16 is coupled, fitting ( On the inner surface of both side threaded portion 22 of the 20 is formed an inclined surface 24 extended to the outside, the inclined surface of the connector 10 is fastened with a fastening nut 18 to be in close contact with the packing 16, The connector 10 is formed with an inclined surface toward the front of the inclined jaw 12, and the fitting 50 forms an inclined surface 54 in which the inner surface of the threaded portion 52 extends outward so that the packing 16 is formed. Characterized in that it is made to be combined.

이하에서는 본 발명을 첨부된 도면들을 참조하여 상세하게 설명한다. 그러나, 하기에서 설명되는 본 발명의 바람직한 실시 예는 본 발명의 기술적 범위를 한정하려는 것은 아니며, 본 발명이 속한 기술 분야에서 통상의 기술을 가진 자에게 본 발명을 보다 명확하고 용이하게 설명하려는 것이다. 도면상에서 동일한 도면부호는 동일한 요소를 지칭한다. 또한 본 발명을 설명함에 있어, 관련된 공지 기능 혹은 구성에 대한 구체적인 설명이 본 발명의 요지를 불필요하게 흐릴 수 있다고 판단되는 경우에는 그 상세한 설명을 생략한다.Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. However, the preferred embodiments of the present invention described below are not intended to limit the technical scope of the present invention, but are intended to explain the present invention more clearly and easily to those skilled in the art. Like reference numerals in the drawings refer to like elements. In describing the present invention, when it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

우선 본 발명에서 제안하고자 하는 고압 가스배관용 연결구의 개념을 살펴보면, 배관과 연결되는 연결구(10)와 피팅(20, 30, 40)의 결합부가 경사면으로 대접하도록 하고 경사면에 패킹을 삽입하여서 체결너트로 체결함으로서 누설을 방지하는 고압 가스배관용 연결구를 제안 하고자 하는 것이다.First, the concept of the connector for the high-pressure gas pipe to be proposed in the present invention, the coupling portion of the connector 10 and the fittings (20, 30, 40) connected to the pipe to be treated with an inclined surface and the fastening nut by inserting the packing on the inclined surface It is intended to propose a high-pressure gas pipe connecting connector to prevent leakage by fastening.

우선 첨부된 도면을 간략하게 설명한다.First, the accompanying drawings will be briefly described.

도 1은 본 발명의 바람직한 제 1실시예에 따른 고압 가스배관용 연결구의 구조를 분리하여 도시한 분리사시도이고, 도 2는 도 1의 결합상태를 절개하여 도시한 단면도를 도시한 도면이다.1 is an exploded perspective view showing a separated structure of the connector for high-pressure gas pipe according to the first embodiment of the present invention, Figure 2 is a cross-sectional view showing the cut state of FIG.

본 발명의 실시 예에 따라 앞에서 제안한 의 전체구성은 도 1과 도 2에서 나타내고 있는 바와 같다. 상기 도 1을 참조하면, 본 발명에서 구현하고자하는 고압 가스배관용 연결구는, 연결구(10)의 일측 단부는 배관(100)과 결합된다. 상기 연결 구(10)의 타측 단부에 단턱을 이루며 돌출되고 전방으로 축소되도록 경사진 경사턱(12)이 형성되며, 이 경사면에는 링형태의 요입홈으로 된 환홈(14)을 형성하여서 패킹(16)이 결합된다. 상기 피팅(20)은 양측부에 체결용 나사부(22)가 형성되고, 상기 나사부(22)의 내측면에는 외측으로 확장되면서 경사진 경사면(24)이 형성된다. 상기 연결구(10)의 경사면이 삽입되고, 상기 체결너트(18)가 경사턱(12)에 걸쳐지면서 나사부(22)와 체결되어져 결합되고, 이때 상기 패킹(16)으로 밀착되면서 씰링(Sealing)이 이루어지고 누설이 방지된다.According to an embodiment of the present invention, the overall configuration of the previously proposed is as shown in FIGS. 1 and 2. Referring to FIG. 1, the connector for the high pressure gas pipe to be implemented in the present invention, one end of the connector 10 is coupled to the pipe 100. An inclined jaw 12 is formed to protrude in the other end of the connecting sphere 10 and to be reduced in the forward direction, and the inclined surface is formed with an annular groove 14 having a ring-shaped recessed groove to form a packing 16. ) Is combined. The fitting 20 has fastening screw portions 22 formed at both sides, and the inclined surface 24 inclined while being extended outward on the inner surface of the screw portion 22. The inclined surface of the connector 10 is inserted, and the fastening nut 18 is fastened to the threaded portion 22 while being coupled to the inclined jaw 12 to be coupled. At this time, the sealing is tightly adhered to the packing 16. And leakage is prevented.

도 3은 본 발명의 제 2실시예에 따른 고압 가스배관용 연결구의 분리사시도이고, 도 4는 본 발명의 실시예에 따른 고압 가스배관용 연결구의 결합상태를 도시한 사시도이고, 도 5는 도 4를 절개하여 도시한 단면도이다. 도 3 내지는 도 5를 참조하면, 상기 피팅(20)의 한 가지 형태인 엘보우(30; Elbow)의 결합부에는 체결용 나사부(32)가 형성되고, 상기 나사부(32)의 내측면에는 외측으로 확장되면서 경사진 경사면(34)이 형성된다. 상기 연결구(10)의 경사면이 삽입되면서 결합되고 체결너트(18)로 체결되어져 상기 패킹(16)으로 밀착되면서 누설이 방지되는 구조로 이루어지고, 주로 배관(100)의 꺽이는 부위에 적용된다.Figure 3 is an exploded perspective view of a high pressure gas pipe connector according to a second embodiment of the present invention, Figure 4 is a perspective view showing a coupling state of the high pressure gas pipe connector according to an embodiment of the present invention, Figure 5 4 is a cross-sectional view of the incision. 3 to 5, a fastening screw part 32 is formed at an engaging portion of an elbow 30, which is one form of the fitting 20, and is formed on the inner surface of the screw part 32. As it expands, an inclined slope 34 is formed. The inclined surface of the connector 10 is inserted and coupled and fastened by the fastening nut 18 to be in close contact with the packing 16 to prevent leakage, and is mainly applied to the bending portion of the pipe 100.

도 6은 본 발명의 제 3실시예에 따른 고압 가스배관용 연결구의 분리사시도이고, 도 7은 도 6의 결합상태를 절개하여 도시한 단면도이다. 도 6과 도 7을 참조하면, 상기 피팅(20)의 또 다른 형태인 티이(40; Tee)와, 이와 유사한 형태로 크로스(Cross; 이하 '티이' 라 통칭 함)가 있으며, 이는 주로 배관(100)의 분배되는 부위에 주로 적용되어진다. 전술 되어진 바와 같은 상기 연결구(10)와, 티이(40)의 양측 및 상 또는 하부 결합부에는 체결용 나사부(42)가 형성되고, 상기 나사부(42)의 내측면에는 외측으로 확장되면서 경사진 경사면(44)이 형성된다. 상기 연결구(10)의 경사면이 삽입되면서 결합되고 체결너트(18)로 체결되어져 상기 패킹(16)으로 밀착되도록 하여 누설이 방지되는 구조로서 구성된다.Figure 6 is an exploded perspective view of the high-pressure gas pipe connector according to a third embodiment of the present invention, Figure 7 is a cross-sectional view showing the cut state of FIG. Referring to FIGS. 6 and 7, there is another form of the fitting 20, a tee 40, and similarly a cross, hereinafter referred to as a tee. It is mainly applied to the dispensing site of 100). The connector 10 as described above, and the fastening screw portion 42 is formed on both sides and the upper or lower coupling portion of the tie 40, the inclined surface inclined while extending outward on the inner surface of the screw portion 42 44 is formed. It is configured as a structure in which the inclined surface of the connector 10 is inserted and coupled and fastened by the fastening nut 18 to be in close contact with the packing 16 to prevent leakage.

본 발명의 또 다른 실시예를 설명하면, 도 8은 본 발명의 제 4의 실시예에 따른 고압 가스배관용 연결구의 결합상태를 도시한 단면도이다. 도 8을 참조하면, 본 발명의 고압 가스배관용 연결구(10)는 일측 결합부에 형성된 경사턱(12)의 전방으로 좁아지도록 경사면으로 이루어진다. 상기 피팅(50)은 나사부(52)의 내측면이 외측으로 확장된 경사면(54)에 환홈(56)이 형성되고, 상기 환홈(56)에는 패킹(16)이 결합된다. 이와 같이 구성되어져 상기 연결구(10)의 경사턱(12)에 체결나사(18)가 걸쳐져서 나사부(52)와 체결됨으로서 상기 패킹(16)과 경사면(12)이 밀착되면서 씰링이 이루어진다. 이와 같은 구조는 상기한 바와 같은, 엘보우(30) 및 티이(40)의 결합부에도 동일하게 적용된다. 상기 연결구(10)의 타측부는 배관(100)과 용접 등의 방법으로 결합되는 것이 바람직하다.Referring to still another embodiment of the present invention, Figure 8 is a cross-sectional view showing a coupling state of the connector for high-pressure gas pipe according to the fourth embodiment of the present invention. Referring to Figure 8, the high-pressure gas pipe connector 10 of the present invention is made of an inclined surface to narrow in front of the inclined jaw 12 formed on one side coupling portion. The fitting 50 has an annular groove 56 formed on the inclined surface 54 in which the inner surface of the threaded portion 52 extends outwardly, and the packing 16 is coupled to the annular groove 56. Since the fastening screw 18 is spread over the inclined jaw 12 of the connector 10 and fastened to the screw part 52, the packing 16 is in close contact with the inclined surface 12, and sealing is performed. This structure is equally applicable to the coupling portion of the elbow 30 and the tie 40 as described above. The other side of the connector 10 is preferably coupled to the pipe 100 by welding or the like.

상술한바와 같이, 본 발명은 배관을 연결하는 결합부에 패킹을 삽입하여 누설을 방지함으로서 씰링효율을 증가시키고, 특히 고압의 고압 가스배관용으로 적합하게 적용될 수 있으며, 그 결합구조를 간소화함으로서 체결 및 분리가 용이한 장점이 있다.As described above, the present invention increases the sealing efficiency by inserting the packing to the coupling portion connecting the pipe to prevent leakage, in particular can be suitably applied for high pressure gas pipe of high pressure, tightening by simplifying the coupling structure And easy separation.

그리고, 본 발명은 간소한 구조로 이루어져 제작이 용이하고 제품의 제작단 가를 낮출 수 있고 보수 시에도 간단하게 패킹만 교환하여 재사용이 가능함으로서 보수비용을 절감하는 등의 경제적인 효과를 기대할 수가 있는 것이다.In addition, the present invention is made of a simple structure is easy to manufacture and can lower the production cost of the product and can be expected to the economic effect, such as reducing the cost of maintenance by simply re-usable by simply replacing the packing during repair.

Claims (2)

배관(100)을 연결하는 연결구에 있어서;In the connector for connecting the pipe 100; 일측이 상기 배관(100)과 결합되는 연결구(10)와, 상기 연결구(10)의 타측은 경사턱(12)을 가지는 경사면에 환홈(14)을 형성하여서 패킹(16)이 결합되며,One end of the connector 10 is coupled to the pipe 100 and the other side of the connector 10 is formed with a ring groove 14 in the inclined surface having an inclined jaw 12, the packing 16 is coupled, 피팅(20)은 양측 나사부(22)의 내측면에는 외측으로 확장된 경사면(24)을 형성하고, 상기 연결구(10)의 경사면이 삽입되면서 패킹(16)으로 밀착되도록 체결너트(18)로 체결되어짐을 특징으로 하는 고압 가스배관용 연결구.The fitting 20 forms an inclined surface 24 extending outwardly on the inner side surfaces of both threaded portions 22, and is fastened with the fastening nut 18 so that the inclined surface of the connector 10 is inserted into the packing 16. High pressure gas pipe connection characterized in that the. 제 1항에 있어서;The method of claim 1; 상기 연결구(10)는 일측 경사턱(12)의 전방으로 경사면이 형성되고,The connector 10 is formed with an inclined surface in front of the one side inclined jaw 12, 상기 피팅(50)은 나사부(52)의 내측면이 외측으로 확장된 경사면(54)에 환홈(56)을 형성하여서 패킹(16)이 결합되도록 이루어짐을 특징으로 하는 고압 가스배관용 연결구.The fitting 50 is connected to the high pressure gas pipe, characterized in that the packing 16 is formed by forming an annular groove 56 on the inclined surface 54 of which the inner surface of the screw portion 52 extends outward.
KR1020070022863A 2007-03-06 2007-03-06 Connector for high-pressure gas pipe KR20080081777A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200464849Y1 (en) * 2010-11-02 2013-01-24 삼성중공업 주식회사 Customized bulkhead union
KR20190060922A (en) 2017-11-25 2019-06-04 송청호 Connecting Pipe for City Gas Piping and Manufacturing Method
KR102342486B1 (en) 2020-07-20 2021-12-23 최빛나리 City gas piping connection

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200464849Y1 (en) * 2010-11-02 2013-01-24 삼성중공업 주식회사 Customized bulkhead union
KR20190060922A (en) 2017-11-25 2019-06-04 송청호 Connecting Pipe for City Gas Piping and Manufacturing Method
KR102342486B1 (en) 2020-07-20 2021-12-23 최빛나리 City gas piping connection

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