KR200202094Y1 - Waterproof pipe - Google Patents

Waterproof pipe Download PDF

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Publication number
KR200202094Y1
KR200202094Y1 KR2019980008751U KR19980008751U KR200202094Y1 KR 200202094 Y1 KR200202094 Y1 KR 200202094Y1 KR 2019980008751 U KR2019980008751 U KR 2019980008751U KR 19980008751 U KR19980008751 U KR 19980008751U KR 200202094 Y1 KR200202094 Y1 KR 200202094Y1
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South Korea
Prior art keywords
waterproof
fixing
packing
protrusions
concrete wall
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KR2019980008751U
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Korean (ko)
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KR19980032141U (en
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이향재
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이향재
대주산업 주식회사
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Priority to KR2019980008751U priority Critical patent/KR200202094Y1/en
Publication of KR19980032141U publication Critical patent/KR19980032141U/en
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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00Independent underground or underwater structures; Retaining walls
    • E02D29/16Arrangement or construction of joints in foundation structures
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D31/00Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
    • E02D31/02Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution against ground humidity or ground water
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2600/00Miscellaneous
    • E02D2600/20Miscellaneous comprising details of connection between elements

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Hydrology & Water Resources (AREA)
  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
  • Laying Of Electric Cables Or Lines Outside (AREA)

Abstract

본 고안은 전기,통신용 맨홀을 성형할 때 인수공의 형틀에 콘크리트 벽체의 두께와 같은 두께로 설치되어 구조물의 벽체와 일체형으로 성형되는 방수관에서 몸체의 내부에 삽입되는 인입파이프가 방수되도록 하며, 여러개로 적층하여 조립시에 견고하게 조립되도록 하는 방수관에 관한 것이다.The present invention is installed in the mold of the receiving hole when forming the electrical and communication manholes to be the same thickness as the thickness of the concrete wall to ensure that the inlet pipe inserted into the body of the waterproof tube formed integrally with the wall of the structure, The present invention relates to a waterproof pipe that is laminated to several pieces so as to be firmly assembled during assembly.

종래의 방수관은 인입 파이프를 조립하면 몸체와 고정되지 못하여 누수가 발생하고, 몸체의 외부와 콘크리트 벽체와의 사이에서도 누수가 발생하는 것이었다.In the conventional waterproof tube, when the inlet pipe is assembled, it is not fixed with the body and leaks, and the leak occurs even between the outside of the body and the concrete wall.

따라서 본 고안은 몸체(2)의 개방부(4)의 일측으로 설치되는 마개(5)의 내측에서 턱(6)을 경사지게 설치하고 양측의 사각테두리(7)(7')의 2면에는 적어도 2개 이상의 고정돌기(8)(8')와 결합홈(11)(11')을 다른 2면에는 고정홈(9)(9')과 결합돌기(10)(10')를 설치하며; 고정턱(3')이 설치된 조립홈(3)에는 안쪽으로 돌기(15')가 형성되어 경사진 밀착 돌출부(15)가 형성된 패킹(14)이 설치되고; 조립홈(3)에서 패킹(14)의 외측으로 고정캡(13)을 조립하여 패킹(14)을 고정하도록 구성시켜 인입 파이프와 몸체사이와 몸체와 콘크리트 벽체의 사이에서 발생되는 누수를 차단하는 것이다.Therefore, the subject innovation is to install the jaw 6 inclined from the inside of the stopper 5 installed to one side of the opening portion 4 of the body 2 and at least on two sides of the rectangular borders 7 and 7 'on both sides. Two or more fixing protrusions 8, 8 'and coupling grooves 11, 11' are provided on the other two surfaces with fixing grooves 9, 9 'and coupling protrusions 10, 10'; An assembly groove 3 having the fixing jaw 3 'installed therein is provided with a packing 14 having protrusions 15' formed therein to form inclined contact protrusions 15; By assembling the fixing cap 13 to the outside of the packing 14 in the assembly groove 3 to fix the packing 14 to block the leakage generated between the incoming pipe and the body and between the body and the concrete wall. .

Description

방수관Waterproof tube

본 고안은 전기,통신용 맨홀을 성형할 때 인수공의 형틀에 콘크리트 벽체의 두께와 같은 두께로 설치되어 구조물의 벽체와 일체형으로 성형하여 자재비와 노무비를 절감하는 방수관에서 몸체의 내부에 삽입되는 인입 파이프가 방수되도록 하는 하며, 여러개로 적층하여 조립시에 견고하게 조립되도록 하는 방수관에 관한 것이다.The present invention is inserted into the inside of the body in the waterproof pipe which is installed in the mold of the receiving hole with the same thickness as the thickness of the concrete wall when forming the electric and communication manholes and is formed integrally with the wall of the structure to reduce the material cost and labor cost. The pipe is to be waterproof and relates to a waterproof pipe to be firmly assembled at the time of assembly by stacking several.

전기,통신용 맨홀을 성형할 때에는 인수공의 형틀에 콘크리트 벽체의 두께와 같은 두께로 방수관을 조립 부착하여 구조물의 벽체와 일체형으로 시공하여 마무리한다.When forming the electrical and communication manholes, the waterproof pipes are assembled and attached to the mold of the receiving hole with the same thickness as that of the concrete wall.

방수관을 여러개 조립하여 설치한후 필요한 방수관의 숫자에 해당하는 마개(5)를 떼어내고 전기,통신선을 포설하게 되며, 전기,통신선이 포설되지 않는 방수관에는 마개를 떼어내지 않고 그대로 설치한후 차후에 사용하도록 여유분으로 남겨놓게 된다.After assembling and installing several waterproof pipes, remove the stopper (5) corresponding to the number of waterproof pipes needed and install the electric and communication lines. It will be reserved for future use.

그러나 케이블을 포설하기 위해서는 맨홀사이에 설치되는 인입파이프(18)의 외부에 접착제를 도포하고 방수관(1)에 삽입하여 고정되도록 하여 방수되도록 하는 것이나 인입파이프가 P,E재료 이므로 방수관과 일체형이 되지 않아서 외부에서 발생되는 수분이 맨홀 내부로 침투하여 누수되는 결점이 있었다.However, in order to install the cable, an adhesive is applied to the outside of the inlet pipe 18 installed between the manholes and inserted into the watertight tube 1 to be fixed so that the watertightness or the inlet pipe is made of P and E material so that it is integrated with the watertight tube. There was a defect that the moisture generated from the outside penetrates into the manhole and leaks.

또한 방수관과 일체형이 되는 콘크리트는 포설되면서 응고되어질 때 방수관과의 재질이 상이하여 방수관의 본체와 콘크리트의 접착면에 틈새가 형성되어 이 틈새를 통하여 외부의 수분이 맨홀내부에 침투하는 결점이 있었다.In addition, the concrete that is integrated with the waterproof tube is different from the material of the waterproof tube when it is solidified while being laid, so that a gap is formed in the main body of the waterproof tube and the adhesive surface of the concrete, and through this gap, external moisture penetrates into the manhole. There was this.

본 고안은 방수관의 사각테두리에서 고정돌기와 결합돌기를 다수개 형성하여 여러개의 방수관이 조립되어진후 콘크리트의 포설후까지 유동되지 않고 설치위치를 견고하게 유지하도록 하는 것이다.The present invention is to form a plurality of fixed projections and coupling projections in the rectangular border of the waterproof tube to maintain the installation position firmly without flowing after the installation of a number of waterproof pipes.

본 고안은 접착제로 방수관과 고정되지 않는 인입파이프를 방수관의 일측에서 패킹을 고정캡으로 고정하며, 패킹이 인입파이프와 밀착되어서 방수되도록 하는 것이다.The present invention is to fix the sealing pipe and the inlet pipe that is not fixed with the adhesive with a fixing cap at one side of the watertight tube, the packing is to be waterproof by being in close contact with the inlet pipe.

본 고안은 방수관의 본체 외부에 고무링을 설치하여 콘크리트의 포설후 콘크리트와 본체와의 사이에서 발생되는 누수를 차단하도록 하는 것이다.The present invention is to install a rubber ring on the outside of the body of the waterproof tube to block the leakage occurring between the concrete and the body after the installation of concrete.

본 고안은 사각테두리의 사면으로 못구멍을 설치하여 못이나 핀을 삽입하여 콘크리트와 견고하게 고정위치를 고수하도록 하는 것이다.The present invention is to install a nail hole on the slope of the square border to insert a nail or pin to adhere firmly to the concrete fixed position.

도 1 은 본 고안의 분리사시도.1 is an exploded perspective view of the present invention.

도 2 는 본 고안의 사시도.2 is a perspective view of the present invention.

도 3 은 본 고안의 설치상태 단면도.3 is a cross-sectional view of the installation state of the present invention.

도 4 는 본 고안의 요부 확대단면도.Figure 4 is an enlarged cross-sectional view of the main part of the present invention.

도 5 는 본 고안의 다른실시예에 대한 측면도.Figure 5 is a side view of another embodiment of the present invention.

1 : 방수관 2 : 몸체1: waterproof tube 2: body

3 : 조립홈 3': 고정턱3: assembly groove 3 ': fixing jaw

4 : 개방부 5 : 마개4: opening part 5: stopper

7, 7' : 사각 테두리 8, 8' : 고정돌기7, 7 ': square border 8, 8': fixing protrusion

9' 9' : 고정홈 10, 10' : 결합돌기9 '9': Fixing groove 10, 10 ': Joining protrusion

11, 11' : 결합홈 12, 12' : 못구멍11, 11 ': Coupling groove 12, 12': Nail hole

13 : 고정링 14 : 패킹13: retaining ring 14: packing

15 : 밀착 돌출부 16 : 접착제15: close contact 16: adhesive

17 : 고무링 20 : 돌출부17: rubber ring 20: protrusion

21 : 조립부21: assembly

맨홀의 성형시 콘크리트 벽체(19)와 같은 형틀을 설치하고 콘크리트 벽체(19)의 두께와 같은 두께를 갖는 방수관(1)을 설치하되 콘크리트 벽체(19)와 방수관(1)을 일체형으로 타설한다.When forming the manhole, a mold such as a concrete wall 19 is installed and a waterproof tube 1 having a thickness equal to that of the concrete wall 19 is installed, but the concrete wall 19 and the waterproof tube 1 are integrally placed. do.

방수관(1)은 원형의 몸체(2)를 형성하며, 맨홀의 내부쪽으로 위치하면서 확장되는 개방부(4)를 형성하고, 양선단에 사각형의 사각테두리(7)(7')을 설치한다.The waterproof tube 1 forms a circular body 2 and forms an open portion 4 which extends while being located inward of the manhole, and installs square rectangular borders 7 and 7 'at both ends. .

사각테두리(7)(7')의 4면중 2면에는 적어도 2개의 고정돌기(8)(8')을 형성하고 나머지 2면은 고정홈(9)(9')을 형성하여 다수개의 방수관(1)을 연속해서 적층하여 사용할 수 있게 된다.At least two fixing protrusions 8 and 8 'are formed on two of four surfaces of the rectangular borders 7 and 7', and the other two surfaces are formed with fixing grooves 9 and 9 '. (1) can be laminated and used continuously.

사각테두리(7)(7')의 사면중 2면의 중앙에는 결합홈(11)을 형성하고 나머지 2면은 결합돌기(10)(10')를 형성하여 일측에서 밀어넣어 조립하면 더 이상 밀리지 않도록 한다.If the center of the two sides of the rectangular border (7) (7 ') is formed with a coupling groove 11, and the other two sides are formed with a coupling protrusion (10) (10') and pushed from one side to assemble further push. Do not

개방부(8)의 내측에는 방수용 마개(5)가 형성되어 케이블의 포설시에 떼어내고 사용하며 케이블을 설치하지 않으면 그대로 놓아 방수되도록 한다.Watertight stopper 5 is formed inside the opening 8 to remove and use the cable when the cable is laid. If the cable is not installed, it is left as it is to be waterproof.

마개(5)의 내부에는 지름이 커지는 턱(6)을 경사지게 형성하고, 반대편의 선단에는 고정턱(3')이 돌출되는 조립홈(3)을 설치한다.The inside of the stopper 5 is formed to be inclined to the jaw (6) having a larger diameter, the opposite end is provided with an assembly groove (3) protruding the fixing jaw (3 ').

조립홈(3)에는 선단이 경사지게 안쪽으로 구부러진 밀착 돌출부(15)의 일측에 돌기(15')를 설치하여 인입파이프(18)를 삽입하여 밀착되면서 조립되어 방수 되도록 하는 패킹(14)을 설치한다.The assembly groove 3 is provided with a packing 14 to be assembled while being in close contact and waterproof by installing a projection 15 'by installing a projection 15' on one side of the close contact protrusion 15 which is bent inwardly at an inclined end. .

패킹(14)의 외측에는 외부에 접착제(16)이 도포되어 패킹(14)을 고정하는 고정캡(13)이 설치된다.On the outside of the packing 14, an adhesive 16 is applied to the outside, and a fixing cap 13 for fixing the packing 14 is installed.

사각테두리(7)(7')의 사면에는 적어도 하나씩의 못구멍(12)(12')을 설치하여 콘크리트 벽체(19)의 포설시 못이나 핀을 넣어서 방수관(1)이 콘크리트벽체(19)와 견고히 고정되도록 한다.At least one nail hole 12, 12 'is installed on the slope of the rectangular rim 7, 7' so that the waterproof pipe 1 is inserted into the concrete wall when the concrete wall 19 is laid. ) And firmly fixed.

따라서 본 고안은 방수관(1)을 다수개 조립하는 경우에는 사각테두리(7)(7')를 일측에서 밀어넣어 조립하면 고정돌기(8)가 고정홈(9)과, 고정돌기(8')가 고정홈(9')과 결합되도록 조립하며, 결합돌기(10)(10')가 결합홈(11)(11')에 조립되면서 결합돌기(10)(10')가 결합홈(11)(11')에서 더 이상 진행되지 않는 위치를 고수하며 조립이 완료된다.Therefore, in the present invention, when assembling a plurality of waterproof pipes (1) by pushing the square border (7) (7 ') from one side, the fixing projection (8) is a fixing groove (9) and fixing projection (8') ) Is assembled to be coupled to the fixing groove (9 '), the coupling protrusions 10, 10' is assembled to the coupling grooves 11, 11 'as the coupling protrusions 10, 10' is the coupling groove (11). At 11), the assembly is held and the assembly is completed.

이와같이 다수개의 방수관(1)의 조립이 완료되면 고정돌기(8)(8')와 고정홈(9)(9')의 형상에 의하여 좌우의 이동이 방지되면서 결합돌기(10)(10')의 결합으로 좌우 이동과 개방부(4) 쪽으로의 이동을 방지하는 것이다.As such, when the assembly of the plurality of waterproof pipes 1 is completed, the coupling protrusions 10 and 10 'are prevented from being moved left and right by the shapes of the fixing protrusions 8, 8' and the fixing grooves 9, 9 '. ) Is to prevent the left and right movement and the movement toward the opening (4).

전기,통신선을 포설하지 않는 경우에는 맨홀사이에 개방부(4)의 내부에 설치된 마개(5)로 인하여 방수가 가능하도록 하는 것이다.In the case of not installing the electric, communication line is to be waterproof because of the plug 5 installed inside the opening (4) between the manhole.

방수관(1)을 콘크리트 벽체(19)와 일체형으로 포설한후 조립홈(3)의 외측에서 인입 파이프(18)를 삽입하면 안쪽으로 돌출되어 있던 밀착 돌출부(15)가 밀리면서 인입 파이프(18)가 삽입되며, 밀착 돌출부(15)가 인입 파이프(18)와 밀착되면서 돌기(15')에 의하여 인입 파이프(18)와 더욱 긴밀하게 밀착되어 방수가 된다.After installing the waterproof pipe 1 integrally with the concrete wall 19 and inserting the inlet pipe 18 from the outside of the assembly groove 3, the close contact protrusion 15 which protrudes inwards is pushed in and the inlet pipe 18 ) Is inserted, the close protrusion 15 is in close contact with the inlet pipe 18 is more closely contacted with the inlet pipe 18 by the projection (15 ') is waterproof.

또한 고정캡(13)의 외측에는 접착제(16)를 도포하여 패킹(14)을 삽입한후 외측에서 삽입하므로 한번의 삽입으로 고정캡(13)으로 패킹(14)을 조립홈(3)에 고정시킨 상태를 유지하며, 인입 파이프(18)의 삽입후 패킹(14)이 분리되는 것을 원천적으로 방지하는 것이다.In addition, since the outer side of the fixing cap 13 is coated with an adhesive 16 to insert the packing 14 and then inserted from the outside, the packing 14 is fixed to the assembly groove 3 with the fixing cap 13 by one insertion. Maintaining the state, and prevents the packing 14 from being separated after insertion of the inlet pipe (18).

또한 몸체(2)의 외측에 설치되는 고무링(17)은 방수관(1)이 콘크리트 벽체(19)와 일체형으로 포설되어 진후 몸체(2)와 콘크리트 벽체(19)와의 재질의 상이함으로 인하여 발생되는 틈새에 의한 누수를 차단하도록 하는 것이다.In addition, the rubber ring 17 installed on the outside of the body (2) is caused by the difference between the material of the body (2) and the concrete wall (19) after the waterproof pipe (1) is installed integrally with the concrete wall (19) It is to prevent the leakage caused by the gap.

그리고 본 고안은 도 5 에서와 같이 고정돌기(8)(8')와 고정홈(9)(9')을 대신하여 사각테두리(7)에 돌출부(20)와 조립부(21)를 설치하여 방수관(1)을 서로 조립하도록 하는 것이다.And the present invention is to install the projection 20 and the assembly portion 21 in the rectangular border (7) in place of the fixing projections (8) (8 ') and fixing grooves (9) (9') as shown in FIG. It is to assemble the waterproof tube (1) to each other.

본 고안은 방수관의 사각테두리에서 고정돌기와 결합돌기를 다수개 형성하여 여러개의 방수관이 조립되어진후 콘크리트의 포설후까지 유동되지 않고 설치위치를 견고하게 유지하는 효과를 제공하는 것이다.The present invention is to form a plurality of fixed projections and coupling projections in the rectangular border of the waterproof pipe is to provide the effect of maintaining the installation position firmly without flowing until after the installation of a plurality of waterproof pipes.

본 고안은 접착제로 방수관과 고정되지 않는 인입파이프를 방수관의 일측에서 패킹을 고정캡으로 고정하며, 패킹이 인입파이프와 밀착되어서 방수되도록 하는 효과를 제공하는 것이다.The present invention is to secure the sealing pipe and the inlet pipe that is not fixed with the adhesive with a fixed cap on one side of the watertight tube, and provides the effect that the packing is in close contact with the inlet pipe waterproof.

본 고안은 방수관의 본체 외부에 고무링을 설치하여 콘크리트의 포설후 콘크리트와 본체와의 사이에서 발생되는 누수를 차단하도록 하는 효과를 제공하는 것이다.The present invention is to provide a rubber ring to the outside of the main body of the waterproof tube to block the leakage occurring between the concrete and the body after the installation of concrete.

본 고안은 사각테두리의 사면으로 못구멍을 설치하여 못이나 핀을 삽입하여 콘크리트와 견고하게 고정위치를 고수하도록 하는 효과를 제공하는 것이다.The present invention is to provide the effect of sticking the fixed position firmly with the concrete by inserting a nail or pin into the slope of the rectangular border.

Claims (5)

콘크리트 벽체(19)를 타설하여 맨홀을 성형함과 동시에 설치되는 인입 파이프(18)를 연결하는 방수관(1)에 있어서,In the waterproof pipe (1) for connecting the inlet pipe (18), which is installed at the same time as forming the manhole by pouring concrete wall (19), 상기 몸체(2)의 개방부(4)의 일측으로 설치되는 마개(5)의 내측에서 턱(6)을 경사지게 설치하고 양측의 사각테두리(7)(7')의 2면에는 적어도 2개 이상의 고정돌기(8)(8')와 결합홈(11)(11')을 다른 2면에는 고정홈(9)(9')과 결합돌기(10)(10')를 설치하며;The jaw 6 is inclined at an inner side of the stopper 5 installed at one side of the opening 4 of the body 2, and at least two or more surfaces are formed on two sides of the rectangular borders 7 and 7 ′ on both sides. Fixing projections 8, 8 'and coupling grooves 11, 11' are provided on the other two surfaces with fixing grooves 9, 9 'and coupling projections 10, 10'; 고정턱(3')이 설치된 조립홈(3)에는 안쪽으로 돌기(15')가 형성되어 경사진 밀착 돌출부(15)가 형성된 패킹(14)이 설치되고;An assembly groove 3 having the fixing jaw 3 'installed therein is provided with a packing 14 having protrusions 15' formed therein to form inclined contact protrusions 15; 조립홈(3)에서 패킹(14)의 외측으로 고정캡(13)을 조립하여 패킹(14)을 고정하도록 구성시킨 방수관.Waterproof tube configured to assemble the fixing cap 13 to the outside of the packing 14 in the assembly groove (3) to fix the packing (14). 제 1 항에 있어서, 사각테두리(7)(7')의 2면에는 결합돌기(10)(10')를 나머지 2면에는 결합홈(11)을 구성시킨 방수관.The waterproof tube according to claim 1, wherein the coupling protrusions (10) and (10 ') are formed on two surfaces of the rectangular border (7) (7') and the coupling grooves (11) on the other two surfaces. 제 1 항에 있어서, 몸체(2)의 외측으로 턱(17')을 형성한후 고무링(17)을 설치하여 방수되도록 구성시킨 방수관.The waterproof tube according to claim 1, wherein after forming the jaw (17 ') on the outside of the body (2), the rubber ring (17) is installed to be waterproof. 제 1 항에 있어서, 사각테두리(7)(7')의 2면에는 돌출부(20)를 나머지 2면에는 조립부(21)를 설치한 방수관.The waterproof tube according to claim 1, wherein the projecting portion (20) is provided on two surfaces of the rectangular border (7) (7 '), and the assembly portion (21) is provided on the other two surfaces. 제 1 항 내지 제 3 항에 있어서, 사각테두리(7)(7')의 사면으로 못구멍(12)(12')를 설치한 방수관.The waterproof tube according to any one of claims 1 to 3, wherein nail holes (12, 12 ') are provided on the slopes of the rectangular border (7) (7').
KR2019980008751U 1998-05-26 1998-05-26 Waterproof pipe KR200202094Y1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200485881Y1 (en) * 2017-04-14 2018-03-07 이장석 Odor Prevention Device for Sewer

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100477145B1 (en) * 2000-08-22 2005-04-29 권혁중 A socket for coupling drainpipes assembly method
KR102053216B1 (en) * 2019-02-20 2019-12-06 주식회사 연아 Waterproof pipe for manhole
KR102053218B1 (en) * 2019-02-20 2019-12-06 주식회사 연아 Waterproof pipe for manhole

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200485881Y1 (en) * 2017-04-14 2018-03-07 이장석 Odor Prevention Device for Sewer

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