KR20010002099A - A Corrugated Plastic Pipe - Google Patents

A Corrugated Plastic Pipe Download PDF

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Publication number
KR20010002099A
KR20010002099A KR1019990021730A KR19990021730A KR20010002099A KR 20010002099 A KR20010002099 A KR 20010002099A KR 1019990021730 A KR1019990021730 A KR 1019990021730A KR 19990021730 A KR19990021730 A KR 19990021730A KR 20010002099 A KR20010002099 A KR 20010002099A
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South Korea
Prior art keywords
spiral unit
resin
synthetic resin
pressure
pipe
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KR1019990021730A
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Korean (ko)
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윤임규
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윤임규
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Priority to KR1019990021730A priority Critical patent/KR20010002099A/en
Publication of KR20010002099A publication Critical patent/KR20010002099A/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
    • F16L9/00—Rigid pipes
    • F16L9/12—Rigid pipes of plastics with or without reinforcement
    • 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
    • F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
    • F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
    • F16L1/028—Laying or reclaiming pipes on land, e.g. above the ground in the ground

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Abstract

PURPOSE: A synthetic resin pipe of internal pressure for underground installation is provided to improve the strength of internal pressure which corresponds to an external load by increasing the joint force between members prominently. CONSTITUTION: A synthetic resin pipe comprises a spiral unit body(110) and a pipe wall(100). In the section of spiral unit body, hard resin(112) surrounds an internal reinforcing core(111). In the hard resin, bent bonding-surfaces(112a) are formed in the both sides of the right and the left. The spiral unit bodies are coiled in arc shape at regular intervals. The pipe wall having a water flowing way in the inside is completed by pouring hard resin(121) in between the spiral unit bodies and then connecting by filling connection materials(120). Therefore the bonding force between the spiral unit body and the filing connection material is enhanced, so that the internal pressure is improved.

Description

지중매설용 내압 합성수지관{A Corrugated Plastic Pipe}Pressure-resistant synthetic resin pipe for underground laying {A Corrugated Plastic Pipe}

본발명은 지중에 매설되어 오수 및 우수를 배수시켜 주는 합성수지관에 관한 것으로, 특히 관벽을 이루는 부재간의 접합력을 획기적으로 증대시켜서 외적인 하중에 대응하는 내압강도를 향상시켜 주는 지중매설용 내압 합성수지관에 관한 것이다.The present invention relates to a synthetic resin pipe buried in the ground to drain sewage and rainwater, particularly to a pressure-resistant synthetic resin pipe for underground laying, which improves the pressure resistance corresponding to external loads by dramatically increasing the bonding force between members constituting the pipe wall. It is about.

이전부터 지중에 설비되는 배수관로의 용도로 합성수지관이 사용되어 왔으며, 이러한 합성수지관은 콘크리트관이나 주철관에 비하여 가격이 저렴할 뿐만 아니라, 경량이어서 취급 및 시공성이 우수한 장점을 가지는 것으로 알려져 있다.Synthetic resin pipes have been used for drainage pipes that have been installed underground, and such synthetic resin pipes are known to have advantages of low price and light weight and excellent handling and construction compared to concrete pipes and cast iron pipes.

이와 같은 합성수지관은 구조적인강도가 취약한 재질적인 특성을 보완하고자 다양한 형태와 구조로서 개발되어 있으며, 이 합성수지관과 관련하여 제안된 것으로 실용신안공개번호 제95-30867호(1995.11.22)에는 도1에 도시된 바와 같이, " 내외면이 접착성수지(41)로 코팅된 보강철심재(40)를 내부에 매립하되, 그 보강철심재(40)가 중앙부에 매설되도록 내면수지층(10)과 외면수지층(20)을 형성하여서 된 것에 있어서, 상기 내면수지층(10)과 외면수지층(20) 사이에 매립되는 보강철심재(40)의 내측에 중공부(42)를 가지도록 함"을 기술요지로 하는 보강철심재를 매설한 나선권회 합성수지평활관이 선출원공개되어 있다.Such synthetic resin pipes have been developed in various forms and structures to supplement the material properties of weak structural strength, and have been proposed in connection with the synthetic resin pipes and are disclosed in Korean Utility Model Publication No. 95-30867 (1995.11.22). As shown in Fig. 1, "the inner and outer surfaces are embedded with a reinforcing iron core 40 coated with an adhesive resin 41 therein, the inner core resin layer 10 so that the reinforcing iron core 40 is embedded in the center And the outer surface resin layer 20 to have a hollow portion 42 inside the reinforcing iron core 40 embedded between the inner surface resin layer 10 and the outer surface resin layer 20. Spiral winding synthetic resin smoothing pipe which embeds reinforcing iron core which made a technical gist of "is disclosed publicly."

이 보강철심재를 매설한 나선권회 합성수지평활관은, 일체로 접합되는 내면수지층(10)과 외면수지층(20) 사이에 보강철심재(30)를 매설하여서, 외적인 하중이나 토압에 견딜 수 있도록 하여 주는 장점을 가지는 것이 사실이다.The spiral wound synthetic resin smoothing pipe embedding the reinforcing iron core material embeds the reinforcing iron core material 30 between the inner resin layer 10 and the outer resin layer 20 which are integrally joined to withstand the external load or earth pressure. It is true to have an advantage.

그러나, 이와 같은 종래의 보강철심재를 매설한 나선권회 합성수지평활관은 내면수지층(10)과 외면수지층(20)이 단순접합되어 있기 때문에, 커다란 하중을 집중적으로 작용받게 되면, 하중을 작용받는 부위의 내면수지층(10)과 외면수지층(20)이 이를 감당하지 못하고 재료분리되어서 쉽게 변형되거나 파손되어서 사용수명이 단축될 뿐만 아니라, 오수 및 우수를 배수시켜 주는 원래의 기능을 상실하게 되는 문제점이 있었다.However, in the spiral wound synthetic resin smooth tube embedded with the conventional reinforcing iron core material, since the inner resin layer 10 and the outer resin layer 20 are simply joined, when a large load is intensively applied, a load is applied. The inner resin layer 10 and the outer resin layer 20 of the receiving portion cannot handle this, and the material is easily deformed or damaged due to material separation, which shortens the service life, and also loses its original function of draining sewage and rainwater. There was a problem.

본발명은 관벽을 이루는 나선단위체와 채움연결재 상호간이 견고하게 접합되도록 구성하여, 관벽 자체의 내압강도를 획기적으로 증대시켜서 집중적인 하중이나 국부적인 하중을 효율적으로 감당할 수 있도록 하여 주는 지중매설용 내압 합성수지관을 제공하는 데 그 목적이 있다.The present invention is constructed so that the spiral unit forming the pipe wall and the filling connecting member are firmly bonded to each other, thereby significantly increasing the pressure resistance of the pipe wall itself so that it can efficiently handle the concentrated load or the local load. The purpose is to provide a coffin.

도1은 종래고안의 합성수지평활관을 나타낸 일부절결 정면도1 is a partially cut-away front view showing a synthetic resin smooth tube of a conventional design

도2는 본발명 합성수지관을 나타낸 일부절결 정면도Figure 2 is a partially cutaway front view showing a synthetic resin tube of the present invention

도3는 본발명 변형실시예에 따른 합성수지관을 나타낸 일부절결 정면도Figure 3 is a partially cutaway front view showing a synthetic resin tube according to a modified embodiment of the present invention

도4는 본발명 다른실시예에 따른 합성수지관을 나타낸 일부절결 정면도Figure 4 is a partially cutaway front view showing a synthetic resin tube according to another embodiment of the present invention

도5는 본발명 합성수지관의 관벽에 내,외표면수지을 일체로 형성하여서 된 것을Figure 5 is formed by integrally forming the inner and outer surface resin on the pipe wall of the present invention synthetic resin pipe

예시한 일부졀결 정면도Illustrated partial grain front view

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

100: 관벽 110: 나선단위체100: pipe wall 110: spiral unit

111: 보강심재 112: 경질수지111: reinforcement core 112: hard resin

112a: 굴곡접합면 113: 재생수지112a: bending joint surface 113: recycled resin

113a: 굴곡접합면 114: 접착성 피복수지113a: bend joint surface 114: adhesive coating resin

120: 채움연결부 121: 경질수지120: filling connection 121: hard resin

본발명의 지중매설용 내압 합성수지관은 도2에 도시되는 바와 같이, 내부의 보강심재(111)를 좌우 양측에 굴곡접합면(112a)이 형성된 경질수지(112)로서 감싼 단면구조로서 서로 일정한 간격을 두고 원호형으로 나선권회되는 나선단위체(110)들과, 상기 나선단위체(110)들 사이에 경질수지(121)를 채워서 일연체로 형성되는 채움연결재(120)로 연이어져서 내부에 물흐름통로를 가지는 관벽(100)을 이루도록 형성하여, 상기 관벽(100)을 이루는 나선단위체(110)들과 채움연결재(120) 상호간의 접합력을 증대시켜서, 상기 관벽(100)이 외적인 하중에 대응하는 내압강도를 향상시켜 주도록 함을 기술구성상의 특징으로 한다.As the underground pressure-resistant synthetic resin pipe for underground laying of the present invention is a cross-sectional structure wrapped around the inner reinforcement core 111 as a hard resin 112 having a bent joint surface 112a formed on both left and right sides, and having regular intervals from each other. The spiral flow unit 110 is formed by spirally wound spiral units 110 that are wound in an arc shape and filled with a hard resin 121 between the spiral unit units 110 to form a solid body. Formed to form a tube wall 100 having a, by increasing the bonding force between the spiral unit 110 and the filling connecting member 120 constituting the tube wall 100, the pressure resistance corresponding to the external load of the tube wall 100 To improve the characteristics of the technical configuration.

다시말해서, 본발명은 나선단위체(110)의 경질수지(112)와 채움연결재(120)의 경질수지(121)가 굴곡접합면(112a)을 통하여 보다 넓은 접합면적으로 접합될 뿐만 아니라, 나선단위체(110)의 경질수지(112)와 채움연결재(120)의 경질수지(121)가 굴곡접합면(112a)을 통하여 짜맞춰지는 형태로서 접합되기 때문에, 그 나선단위체(110)와 채움연결재(120) 상호간이 견고하게 접합되어서 내압강도가 향상된 관벽(100)을 이루게 되는 것이다.In other words, in the present invention, the hard resin 112 of the spiral unit 110 and the hard resin 121 of the filling connecting member 120 are joined to a wider joint area through the curved joint surface 112a, as well as the spiral unit. Since the hard resin 112 of 110 and the hard resin 121 of the filling connecting member 120 are joined in a form of being assembled through the bending joint surface 112a, the spiral unit 110 and the filling connecting member 120 are joined. ) Is firmly bonded to each other to form a pipe wall 100 with improved pressure resistance.

따라서, 본발명의 지중매설용 내압 합성수지관은 관벽(100)이 집중적인 하중이나 국부적인 하중을 작용받게 되더라도, 관벽(100)을 이루는 부재간에 재료분리되어서 쉽게 변형되거나 파손됨을 방지하여 줌으로써, 사용수명을 연장시켜 주는 동시에 오수 및 우수를 배수시켜 주는 원래의 배수기능을 충실히 수행하는 등의 장점을 가지게 되는 것이다.Therefore, the underground pressure resistant synthetic resin pipe of the present invention can be used by preventing the material from being easily deformed or broken by separating the material between the members constituting the pipe wall 100 even when the pipe wall 100 is subjected to intensive load or local load. It extends the life and at the same time has the advantage of faithfully performing the original drainage function that drains sewage and rainwater.

이하, 첨부도면에 도시되는 구체적인 실시예를 통하여 본발명의 기술내용을 상세히 설명하면 다음과 같다.Hereinafter, the technical details of the present invention through the specific embodiments shown in the accompanying drawings in detail as follows.

상기 나선단위체(110)들은 내부의 보강심재(111)를 경질수지(112)로서 감싼 단면형상으로 관벽(100)의 기본골격을 이루도록 한다.The spiral unit 110 forms a basic skeleton of the pipe wall 100 in a cross-sectional shape wrapped inside the reinforcement core material 111 as a hard resin (112).

그리고, 상기 나선단위체(110)들은 내부의 보강심재(111)를 감싼 경질수지(112)의 양측에 굴곡접합면(112a)이 형성되도록 함이 중요하다. 그 이유는, 상기 나선단위체(110)와 채움연결부(120) 상호간의 접합면적을 보다 넓게 확보하여 주면서도, 그 나선단위체(110)와 채움연결부(120)의 접합부위가 서로 짜맞춰지는 형태로서 견고하게 접합되도록 하기 위함이다.In addition, it is important that the spiral unit 110 has a bent joint surface 112a formed on both sides of the hard resin 112 wrapping the reinforcing core member 111 therein. The reason is that, while securing a wider joint area between the spiral unit 110 and the filling connection portion 120, while the joint portion of the spiral unit 110 and the filling connection portion 120 is fitted to each other firmly. This is to ensure that the bonding.

본발명의 실시예에서 상기 나선단위체(110)는 사각형상으로 성형된 경질수지(112) 내면에 복수의 보강심재(111)들을 매립하여서 된 것으로 예시하고 있으나, 필요에 따라서는 도3의 변형예에서와 같이, 상기 나선단위체(110)는 사다리꼴형상으로 성형된 경질수지(112) 내면에 보강심재(111)들을 매립하여서 될 수도 있음을 밝혀 둔다.In the embodiment of the present invention, the spiral unit 110 is exemplified by embedding a plurality of reinforcing cores 111 on the inner surface of the hard resin 112 formed in a quadrangular shape, but if necessary, modification of FIG. As in, it is noted that the spiral unit 110 may be embedded by reinforcing core member 111 on the inner surface of the hard resin 112 formed in a trapezoidal shape.

여기에서, 상기 보강심재(111)는 엔지니어링플라스틱으로 만들어져서 구조적강도를 가지면서도, 그 보강심재(111)를 감싸는 경질수지(112)와 견고하게 접합되도록 함이 바람직하다.Here, the reinforcing core material 111 is preferably made of engineering plastics, while having structural strength, it is preferable to be firmly bonded to the hard resin 112 surrounding the reinforcing core material 111.

상기 채움연결재(120)는 원호형상으로 나선권회되는 나선단위체(110)들 사이에 겔상태의 경질수지(121)를 채운 후에 경화시켜서, 그 나선단위체(110)들을 일연체로 연이어주도록 성형하여, 기본골격이 되는 나선단위체(110)들과 함께 관벽(100)을 이루도록 한다.The filling connecting member 120 is hardened after filling the hard resin 121 of the gel state between the spiral unit 110 spirally wound in an arc shape, by molding the spiral unit 110 in a continuous manner, It forms a tube wall 100 with the spiral unit 110 to be a basic skeleton.

그리고, 상기 채움연결재(120)는 상기 나선단위체(110)들 사이에서 내외면이 평활하도록 성형하여서, 물흐름이 원할한 관벽(100)을 얻을 수 있도록 함이 바람직하다.In addition, the filling connector 120 is preferably molded so that the inner and outer surfaces are smooth between the spiral unit 110, so that the pipe wall 100 with a smooth flow of water can be obtained.

한편, 도4는 본발명의 다른실시예를 나타낸 것으로, 상기 나선단위체(110)는 그 내부의 보강심재(111)를 좌우 양측에 굴곡접합면(113a)이 형성된 재생수지(113)로서 감싸고, 상기 재생수지(113)의 외면 전체에 굴곡접합면(113a)이 들어나도록 접착성 피복수지(114)를 덧입혀서 된 것이다.On the other hand, Figure 4 shows another embodiment of the present invention, the helix unit 110 wraps the reinforcing core material 111 therein as a recycled resin 113 formed with a bending joint surface 113a on both left and right sides, The adhesive coating resin 114 is coated on the entire outer surface of the recycled resin 113 so that the curved joint surface 113a is formed.

이는, 양측의 굴곡접합면(113a)이 들어나도록 재생수지(113)를 덧입힌 접착성 피복수지(114)로서, 재료간의 접합력이 균일하지 못한 특성을 가지는 재생수지(113)의 접합능력을 증대시켜서, 상기 나선단위체(110)의 재료로서 상대적으로 가격이 저렴한 재생수지(113)를 적극적으로 재활용할 수 있도록 배려하여, 경제적이고 환경친화적인 이점을 가지는 지중매설용 내압 합성수지관을 제공할 수 있도록 한 것이다.This is an adhesive coated resin 114 which is coated with a regenerative resin 113 so that the bent joint surfaces 113a on both sides thereof are formed, thereby increasing the bonding ability of the regenerative resin 113 having a characteristic that the bonding force between materials is not uniform. In order to actively recycle recycled resin 113 which is relatively inexpensive as a material of the spiral unit 110, it is possible to provide a pressure-resistant synthetic resin pipe for underground laying having economical and environmentally friendly advantages. It is.

여기에서, 도5의 도시와 같이 상기 나선단위체(110)들과 채움연결부(120)의 내,외표면에 띠형상의 내,외표면수지(100a)(100b)를 일체로 형성하여서 된 관벽(200)을 이루도록 할 수도 있음을 밝혀 둔다.Here, as illustrated in FIG. 5, the inner wall and outer surface resins 100a and 100b of the spiral unit 110 and the filling connection part 120 are integrally formed with the tube wall ( It may be possible to achieve 200).

이상에서 살펴 본 바와 같이, 본발명은 관벽을 이루는 나선단위체와 채움연결재 상호간이 견고하게 접합되도록 하여서, 그 관벽을 이루는 부재간에 재료분리되어서 변형되거나 파손됨을 방지하여 줌으로써, 사용수명을 연장시켜 주면서도 원래의 배수기능을 충실히 수행할 수 있도록 하여 주는 유용한 효과를 가지게 되는 것이다.As described above, the present invention allows the spiral unit and the filling connecting member to form a joint wall to be firmly bonded to each other, thereby preventing the material from being deformed or broken between the members forming the tube wall, thereby extending the service life of the original unit. It will have a useful effect that can faithfully perform the drainage function of.

Claims (5)

내부의 보강심재(111)를 좌우 양측에 굴곡접합면(112a)이 형성된 경질수지(112)로서 감싼 단면구조로서 서로 일정한 간격을 두고 원호형으로 나선권회되는 나선단위체(110)들과, 상기 나선단위체(110)들 사이에 경질수지(121)를 채워서 일연체로 형성되는 채움연결재(120)로 연이어져서 내부에 물흐름통로를 가지는 관벽(100)을 이루도록 형성하여, 상기 관벽(100)을 이루는 나선단위체(110)들과 채움연결재(120) 상호간의 접합력을 증대시켜서, 상기 관벽(100)이 외적인 하중에 대응하는 내압강도를 향상시켜 주도록 함을 특징으로 하는 지중매설용 내압 합성수지관.Spiral unit 110 and the spiral unit wound spirally in an arc at regular intervals as a cross-sectional structure wrapped as a hard resin 112 formed inside the reinforcing core material 111, the bending joint surface 112a on both left and right sides, the spiral Filling the hard resin 121 between the unit body 110 is connected to the filling connection member 120 formed as a single body to form a tube wall 100 having a water flow passage therein to form the tube wall 100 By increasing the bonding force between the spiral unit (110) and the filling connector 120, the pressure-resistant synthetic resin pipe for underground laying, characterized in that the pipe wall 100 to improve the pressure resistance corresponding to the external load. 제1항에 있어서, 상기 나선단위체(110)는 사각형상으로 성형된 경질수지(112) 내면에 복수의 보강심재(111)들을 매립하여서 됨을 특징으로 하는 지중매설용 내압 합성수지관.The method of claim 1, wherein the spiral unit (110) is a pressure-resistant synthetic resin pipe for underground laying, characterized in that the plurality of reinforcing core material 111 is embedded in the inner surface of the hard resin 112 formed in a rectangular shape. 제1항 또는 제2항에 있어서, 상기 나선단위체(110)는 사다리꼴형상으로 성형된 경질수지(112) 내면에 보강심재(111)들을 매립하여서 됨을 특징으로 하는 지중매설용 내압 합성수지관.The method of claim 1 or 2, wherein the spiral unit (110) is a pressure-resistant synthetic resin pipe for underground laying, characterized in that the reinforcing core material 111 is embedded in the inner surface of the hard resin (112) molded in a trapezoidal shape. 제1항에 있어서, 상기 나선단위체(110)는 그 내부의 보강심재(111)를 좌우 양측에 굴곡접합면(113a)이 형성된 재생수지(113)로서 감싸고, 상기 재생수지(113)의 외면 전체에 굴곡접합면(113a)이 들어나도록 접착성 피복수지(114)를 덧입혀서 됨을 특징으로 하는 지중매설용 내압 합성수지관.According to claim 1, wherein the spiral unit 110 wraps the reinforcing core material 111 therein as a recycled resin 113 having a bending joint surface 113a formed on both left and right sides, the entire outer surface of the recycled resin 113 A pressure-resistant synthetic resin pipe for underground laying, characterized in that the adhesive coating resin 114 is added to the bent joint surface (113a) to enter. 제4항에 있어서, 상기 나선단위체(110)들과 채움연결부(120)의 내,외표면에 띠형상의 내,외표면수지(100a)(100b)를 일체로 형성하여서 된 관벽(200)을 이루도록 함을 특징으로 하는 지중매설용 내압 합성수지관.The tube wall 200 of claim 4, wherein the inner and outer surfaces of the spiral unit 110 and the filling connection portion 120 are integrally formed with a band-shaped inner and outer surface resins 100a and 100b. Underground pressure-resistant synthetic resin tube, characterized in that to achieve.
KR1019990021730A 1999-06-11 1999-06-11 A Corrugated Plastic Pipe KR20010002099A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100324585B1 (en) * 1999-12-10 2002-02-16 윤임규 A Corrugated Plastic Pipe
KR100449157B1 (en) * 2001-09-10 2004-09-16 대림산업 주식회사 Sewer Pipe
KR100449158B1 (en) * 2001-09-10 2004-09-16 대림산업 주식회사 Foamed Sewer Pipe
KR100724067B1 (en) * 2005-12-22 2007-06-04 주식회사 한국하이맥스 High strength plastic pipe having one type profile of third floor and its making method
KR100741173B1 (en) * 2006-09-27 2007-07-23 주식회사 중원 A profile pipe with the reinforcing plate and multi wall drain pipe thereby
KR100803775B1 (en) * 2002-10-07 2008-02-20 민병이 High strength spiral pipe for water and sewage pipes used in construction and civil engineering of roads
KR100873007B1 (en) * 2007-08-20 2008-12-10 김현우 Plastic pipe with reinforcement means
KR101160647B1 (en) * 2012-03-07 2012-06-29 주식회사 파이프랜드 Synthetic resin profile pipe

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100324585B1 (en) * 1999-12-10 2002-02-16 윤임규 A Corrugated Plastic Pipe
KR100449157B1 (en) * 2001-09-10 2004-09-16 대림산업 주식회사 Sewer Pipe
KR100449158B1 (en) * 2001-09-10 2004-09-16 대림산업 주식회사 Foamed Sewer Pipe
KR100803775B1 (en) * 2002-10-07 2008-02-20 민병이 High strength spiral pipe for water and sewage pipes used in construction and civil engineering of roads
KR100724067B1 (en) * 2005-12-22 2007-06-04 주식회사 한국하이맥스 High strength plastic pipe having one type profile of third floor and its making method
KR100741173B1 (en) * 2006-09-27 2007-07-23 주식회사 중원 A profile pipe with the reinforcing plate and multi wall drain pipe thereby
KR100873007B1 (en) * 2007-08-20 2008-12-10 김현우 Plastic pipe with reinforcement means
KR101160647B1 (en) * 2012-03-07 2012-06-29 주식회사 파이프랜드 Synthetic resin profile pipe

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