KR100647081B1 - Corrugated steel pipe that synthetic resins cloted - Google Patents

Corrugated steel pipe that synthetic resins cloted

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Publication number
KR100647081B1
KR100647081B1 KR1020040100795A KR20040100795A KR100647081B1 KR 100647081 B1 KR100647081 B1 KR 100647081B1 KR 1020040100795 A KR1020040100795 A KR 1020040100795A KR 20040100795 A KR20040100795 A KR 20040100795A KR 100647081 B1 KR100647081 B1 KR 100647081B1
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KR
South Korea
Prior art keywords
steel pipe
corrugated steel
multilayer film
coated
synthetic resin
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KR1020040100795A
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Korean (ko)
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KR20060062084A (en
Inventor
이장섭
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동원철강 주식회사
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Priority to KR1020040100795A priority Critical patent/KR100647081B1/en
Publication of KR20060062084A publication Critical patent/KR20060062084A/en
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Publication of KR100647081B1 publication Critical patent/KR100647081B1/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
    • F16L11/00—Hoses, i.e. flexible pipes
    • F16L11/14—Hoses, i.e. flexible pipes made of rigid material, e.g. metal or hard plastics
    • F16L11/15—Hoses, i.e. flexible pipes made of rigid material, e.g. metal or hard plastics corrugated
    • 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
    • F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
    • F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
    • F16L58/04—Coatings characterised by the materials used
    • F16L58/10—Coatings characterised by the materials used by rubber or plastics
    • F16L58/1054—Coatings characterised by the materials used by rubber or plastics the coating being placed outside the pipe
    • F16L58/1063—Coatings characterised by the materials used by rubber or plastics the coating being placed outside the pipe the coating being a sheet wrapped around the pipe

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

Abstract

본 발명은 합성수지피복 파형강관에 관한 것이다.The present invention relates to a synthetic coated corrugated steel pipe.

본 발명은 토목공사의 오폐수관로에 설치되어지는 합성수지피복 파형강관에 있어서, 복층필름시트가 철판의 양면에 열융착으로 코팅되어 산형태로 절곡된 단위패널을 나선형태로 감고, 상기 단위패널의 양측단을 축방향으로 결합시켜 하나의 합성수지피복 파형강관이 형성되어지도록 구성하되, 상기 합성수지피복 파형강관의 절단면에 보호코팅부가 감싸지도록 구성되어짐을 특징으로 한다.The present invention is a synthetic resin coated corrugated steel pipe installed in the waste water pipe line of the civil engineering work, the multilayer film sheet is coated by heat-sealing on both sides of the iron plate spirally wound unit panel bent in a mountain form, both sides of the unit panel Combining the ends in the axial direction is configured so that one synthetic coated corrugated steel pipe is formed, characterized in that the protective coating is wrapped on the cutting surface of the synthetic coated corrugated steel pipe.

따라서, 본 발명은 제작된 강관의 운반, 보관 및 시공 과정에서 예리하게 절단된 절단면에 의하여 작업자가 다치는 것을 방지하고, 아울러 절단면이 유체와 접촉되는 것을 막아 부식을 방지하고, 보호코팅부가 복층필름시트 및 절단면으로 부터 박리되는 것을 방지할 수 있도록 한 것이다.Therefore, the present invention prevents the operator from being injured by the cutting surface sharply cut during transportation, storage and construction of the manufactured steel pipe, and prevents the cutting surface from contacting with the fluid to prevent corrosion, and the protective coating part is a multilayer film sheet. And to prevent peeling from the cut surface.

합성수지피복 파형강관, 절단면, 보호코팅부, 복층필름시트Synthetic resin coated corrugated steel pipe, cut surface, protective coating part, multilayer film sheet

Description

합성수지피복 파형강관{CORRUGATED STEEL PIPE THAT SYNTHETIC RESINS CLOTED}Synthetic Resin Corrugated Steel Pipes {CORRUGATED STEEL PIPE THAT SYNTHETIC RESINS CLOTED}

도 1은 본 발명에 따른 합성수지피복 파형강관의 종단면도.1 is a longitudinal cross-sectional view of a synthetic resin coated corrugated steel pipe according to the present invention.

도 2는 도1의 A부 확대도.2 is an enlarged view of a portion A of FIG. 1;

도 3은 본 발명에 따른 합성수지피복 파형강관의 다른 방향의 종단면도.Figure 3 is a longitudinal cross-sectional view of another direction of the composite coated corrugated steel pipe according to the present invention.

<도면의 주요 부분에 대한 부호의 간단한 설명><Brief description of symbols for the main parts of the drawings>

1:합성수지피복 파형강관 2:보호코팅부1: synthetic resin coated corrugated steel pipe 2: protective coating

11:단위패널 112,112':복층필름시트11: unit panel 112, 112 ': multilayer film sheet

본 발명은 하수종말처리장, 차집관로, 양축장, 오/폐수관로, 주택단지 우/오수관로, 쓰레기 매립장 침출수 배수관로, 공단공업용수로, 생활하수관로 ,경지정리, 지하철, 도로, 항만, 공항 및 골프장 등 구배가 심한 지역의 배수관 우/오수관로에 주로 사용되는 합성수지피복 파형강관에 관한 것으로서, 특히 복층필름시트가 코팅된 아연도금강판을 이용하여 제조된 합성수지피복 파형강관의 절단면에 보호코팅부가 형성되어지도록 함으로써, 제작, 운반, 보관 및 시공 과정에서 예리하게 절 단된 절단면에 의하여 작업자가 다치는 것을 방지하고, 유체와의 접촉을 차단하여 부식되는 것을 막을 수 있도록 하고, 아울러 보호코팅부가 복층필름시트 및 절단면으로 부터 박리되는 것을 방지할 수 있도록 한 것이다.The present invention is a sewage terminal treatment plant, a sewer pipe, a livestock farm, sewage / waste pipe, a housing complex right / sewage pipe, landfill leachate drainage pipe, industrial complex, industrial sewage pipe, land clearing, subway, road, harbor, airport and The present invention relates to a composite coated corrugated steel pipe mainly used for drainage drainage and sewage pipes in areas with high gradients, such as golf courses. By preventing the operator from being injured by the cutting surface sharply cut during the manufacturing, transportation, storage and construction process, it prevents the contact with the fluid to prevent corrosion, and also the protective coating portion of the multilayer film sheet and It is to prevent peeling from the cut surface.

일반적으로 유체를 이송시키기 위한 주된 수단으로 관을 사용하게 되며, 그 내부를 흐르는 유체를 선택적으로 구속하거나 해제할 수 있도록 하기 위하여 별도의 밸브를 설치하여 사용하게 된다.Generally, a pipe is used as a main means for transporting a fluid, and a separate valve is installed to selectively restrict or release a fluid flowing therein.

상기 관은 그 재질에 따라 강관(강파이프)과 합성수지관(합성수지 파이프)으로 구분되어지며, 강관은 주로 압력이 높은 곳에 사용되어지는이음매가 없는 가스관 등이 있고, 합성수지관은 합성수지를 주원료로 강관에 비하여 압력이 낮으며 주로 부식을 방지하기 위한 목적으로 사용되어 진다.The pipes are classified into steel pipes (steel pipes) and synthetic resin pipes (synthetic resin pipes) according to their materials, and steel pipes include seamless gas pipes mainly used in high pressure, and synthetic resin pipes are mainly made of synthetic resin. Compared to the lower pressure, it is mainly used to prevent corrosion.

한편, 지름이 비교적 큰 대형관의 경우, 하수종말처리장, 차집관로, 양축장, 오/폐수관로, 주택단지 우/오수관로, 쓰레기 매립장 침출수 배수관로, 공단공업용수로, 생활하수관로 ,경지정리, 지하철, 도로, 항만, 공항 및 골프장 등 구배가 심한 지역의 배수관 우/오수관로에 사용되는 것으로 주로 콘크리트재의 흄관이나 암거를 사용하게 되는데, 이러한 흄관이나 암거는 그 자체 중량이 너무 무겁고, 외부의 충격에 너무 쉽게 파손되는 문제점과 아울러 재시공시에 많은 인력과 시간이 소요되며 취급이 용이하지 못하는 다른 문제점이 있었다.On the other hand, in the case of large pipes with relatively large diameters, sewage end treatment plants, drainage pipes, both farms, sewage / wastewater pipes, housing complex right / sewage pipes, landfill leachate drainage pipes, industrial industrial waterways, household sewage pipes, It is used for drainage pipes and sewage pipes in areas with severe gradients such as subways, roads, harbors, airports, and golf courses, and mainly uses concrete fume pipes or culverts. These fume pipes or culverts are heavy and have external impacts. In addition to the problem that is too easy to break, there was another problem that takes a lot of manpower and time and is not easy to handle.

이러한 문제점을 해소하기 위한 방안으로 철판을 나선형으로 말아 제조된 강관이 사용되고 있으나, 내부를 흐르는 유체와의 접촉으로 인한 부식이 발생하여 그 수명이 낮아지는 또 다른 문제점이 있었다.In order to solve this problem, a steel pipe manufactured by spirally rolling a steel plate is used, but there is another problem in that its life is reduced due to corrosion caused by contact with a fluid flowing inside.

이 같은 문제점을 해소하기 위한 방안으로 철판이 나선형으로 말아지기 이전 공정에서 그 표면에 폴리에틸렌이 코팅되어지도록 하여 부식을 방지하도록 하였으나, 양측단이 일정 길이로 절단된 상태로 제조되어지는 강관의 절단면이 항상 외부로 노출되어 있음으로써, 이를 제작과 운반 및 보관 시공하는 과정에서 절단면에 의하여 작업자가 상해를 입게됨과 동시에 절단된 부분이 유체와의 접촉으로 인하여 쉽게 부식되는 원인이 있었다.In order to solve this problem, the steel plate is coated with polyethylene in the process before the iron plate is spirally rolled to prevent corrosion, but the cut surface of the steel pipe which is manufactured with both ends cut to a certain length As it is always exposed to the outside, the worker was injured by the cut surface during the manufacturing, transport and storage construction, and at the same time, the cut portion was easily corroded due to contact with the fluid.

또한, 이 같은 상태에서 연결구를 이용하여 강관을 땅속에 매설할 경우, 연결구로 연결된 강관의 양측 단부에서 부식이 발생되고, 발생된 부식이 시간이 지남에 따라 진전되어 누수, 또는 누유가 발생되는 또 다른 문제점이 있었다.In this state, when the steel pipe is embedded in the ground by using the connector, corrosion occurs at both ends of the steel pipe connected by the connector, and the corrosion generated is developed over time, resulting in leakage or leakage. There was another problem.

본 발명은 이와 같은 문제점을 해소하기 위해 창출한 것으로서 합성수지피복 파형강관의 절단면에 보호코팅부가 코팅되어지도록 함으로써, 제작, 운반, 보관 및 시공 과정에서 예리하게 절단된 절단면에 의하여 작업자가 다치는 것을 방지하고, 유체와의 접촉을 차단하여 부식되는 것을 막도록 하고, 아울러 절단면에 코팅된 보호코팅부가 복층필름시트 및 절단면으로 부터 박리되는 것을 방지하여 그 수명을 연장시킬 수 있는 합성수지피복 파형강관을 제공하는데 그 목적이 있다.The present invention has been made to solve the above problems, and the protective coating portion is coated on the cut surface of the composite coated corrugated steel pipe, thereby preventing the operator from being injured by the cut surface sharply cut during the manufacturing, transportation, storage and construction process. To prevent corrosion by blocking contact with the fluid, and to prevent the protective coating coated on the cut surface from being peeled off from the multilayer film sheet and the cut surface, it provides a synthetic coated corrugated steel pipe which can extend its life. There is a purpose.

이와 같은 목적을 달성하기 위한 본 발명은 복층필름시트(112)(112')가 철판(111)의 양면에 열융착으로 코팅되어 산형태로 절곡된 단위패널(11)이 형성되어지며 상기 단위패널(11)의 양측단에 길이방향으로 연속되어진 철부걸림턱(113)과 요부걸림턱(114)을 형성하여 나선형태로 걸려 감겨지도록 프레스로 가압되어 하나의 합성수지 피복강관(1)이 형성되어지고, 상기 합성수지피복 파형강관(1)의 절단면에 보호코팅부(2)가 감싸지도록 구성된 토목공사의 오폐수관로에 설치되어지는 합성수지피복 파형강관에 있어서, 상기 보호코팅부(2)는 합성수지피복 파형강관(1)의 절단면 및 단위패널(11)의 내,외주연부에 융착되어진 복층필름캡(21)으로 구성되어지고, 상기 복층필름캡(21)은

Figure 112006055206086-pat00007
형태로 융착되어되, 상기 복층필름캡(21)의 상부 내측은 절판(11)에 융착된 복층필름시트(112)의 외부에 융착되어지며 상기 복층필름캡(21)의 하부 외측은 철판(11)에 융착된 다른 복층필름시트(112')의 내부에 융착되어짐을 특징으로 하는 합성수지피복 파형강관을 제공함에 그 목적이 달성된다.According to the present invention for achieving the above object, the multilayer film sheets 112 and 112 ′ are coated on both sides of the iron plate 111 by heat fusion to form a unit panel 11 that is bent in a mountain form. Formed in the longitudinal direction at both ends of the (11) and the convex latching jaw 113 and the recessed catching jaw 114 is formed by pressing the press to be wound in a spiral form is formed of one synthetic resin coated steel pipe (1) In the synthetic resin coated corrugated steel pipe which is installed in the waste water pipe line of the civil engineering construction so that the protective coating (2) is wrapped on the cut surface of the synthetic coated corrugated steel pipe (1), the protective coating portion (2) is a synthetic coated corrugated steel pipe It consists of a multilayer film cap 21 fused to the cut surface of (1) and the inner and outer peripheral portions of the unit panel 11, the multilayer film cap 21
Figure 112006055206086-pat00007
It is fused in the form, the upper inner side of the multilayer film cap 21 is fused to the outside of the multilayer film sheet 112 fused to the plate 11 and the lower outer side of the multilayer film cap 21 is iron plate 11 The object is achieved by providing a synthetic resin coated corrugated steel pipe, characterized in that it is fused to the inside of another multilayer film sheet (112 ') fused to the).

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이하, 본 발명의 실시예를 첨부 도면을 참조하여 설명하면 다음과 같다.Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

본 발명에 따른 합성수지피복 파형강관은 도1 내지 도3에 도시된 바와 같이, 일정한 직경을 갖는 합성수지피복 파형강관(1) 및 상기 합성수지피복 파형강관(1)의 절단면에 구비된 보호코팅부(2)로 구성된다.As shown in Figures 1 to 3, the synthetic coated corrugated steel pipe according to the present invention, the protective coating portion (2) provided on the cut surface of the synthetic coated corrugated steel pipe (1) having a constant diameter and the synthetic coated corrugated steel pipe (1) It consists of

여기에서, 상기 합성수지피복 파형강관(1)은 소정의 두께 및 넓이를 갖는 띄형태의 철판(111)을 공지의 미도시한 파형강관 성형기를 통하여 성형되어지도록 구성되어 있다. 즉, 띠형태로 공급되어지는 철판(111)은 먼저, 가운데 부분이 소정의 각도 또는 깊이를 갖는 산형태로 절곡된 후 그 양측단인 골부분에 고리형태의 철부걸림턱(113)과 요부걸림턱(114)을 성형하고, 다음, 요부걸림턱(114)에 철부걸림턱(113)에 걸려지도록 한 상태에서 이들을 별도의 프레스로 압착시켜 인출되어지도록 한 후 별도의 절단기를 이용하여 일정 길이로 절단함으로써, 도1에 도시된 바와 같은, 파형이 연속되어진 형태를 얻게 된다.Here, the synthetic resin coated corrugated steel pipe (1) is configured to be formed through the well-known non-illustrated corrugated steel pipe molding machine of the steel plate 111 of the floating shape having a predetermined thickness and width. That is, the iron plate 111 supplied in the form of a band is first bent in the form of a mountain having a predetermined angle or depth, and then a hook-shaped iron catching jaw 113 and a recessed part are caught in the valley portions at both ends thereof. Forming the jaw 114, and then, in the state to be caught on the iron catching jaw 113 on the lumbar catching jaw 114 to compress them by a separate press to be drawn out to a predetermined length using a separate cutter By cutting, a form in which waveforms are continuous as shown in FIG. 1 is obtained.

이때, 파형강관 성형기로 공급되어지는 철판(111)에 별도의 필름 융착기로 복층필름을 가열하여 융착시킴으로써 복층필름층(112)(112')이 코팅된 합성수지피복 파형강관(1)을 얻을 수 있게 된다.At this time, the composite film coated corrugated steel pipe (1) coated with the multilayer film layers (112, 112 ') can be obtained by heating and fusing a multilayer film with a separate film fusion machine to the iron plate (111) supplied to the corrugated steel pipe forming machine. do.

상기 보호코팅부(2)는 합성수지피복 파형강관(1)의 절단면을 소정 길이 만큼 감싸도록 하여 절단된 부분이 외부와 차단되어지도록 함으로써, 제작된 합성수지피복 파형강관(1)의 보관 및 운반 그리고 시공하는 과정에서 예리하게 절단된 절단면에 의하여 작업자가 다치는 것을 방지하고, 유체와의 접촉을 방지하여 절단된 부위가 부식되는 것을 막을 수 있도록 하고, 아울러 보호코팅부(2)가 복층필름층(112) (112') 및 절단면으로 부터 쉽게 박리되는 것을 방지하는 주된 기능이 제공되어지도록 구성되어 있다.The protective coating part 2 wraps the cut surface of the synthetic coated corrugated steel pipe 1 by a predetermined length so that the cut portion is cut off from the outside, thereby storing and transporting and constructing the manufactured synthetic coated corrugated steel pipe 1. The operator can be prevented from being injured by the sharply cut surface during the process, and prevents contact with the fluid to prevent corrosion of the cut portion, and the protective coating part 2 is the multilayer film layer 112. And 112 'and the main function of preventing the peeling off easily from the cut surface.

이를 위해, 상기 보호코팅부(2)는 합성수지피복 파형강관(1)의 절단면을 포함하는 내주연부와 외주연부에 소정 두께를 갖도록 코팅된 복층필름캡(21)으로 구성되어 있고, 상기 복층필름캡(21)은 3면을 감쌀 수 있도록 하기 위하여

Figure 112006055206086-pat00002
형태를 갖도록 열로 융착되어지도록 구성되어 있다. 즉, 이러한 복층필름캡(21)은 상부 내측이 절판(11)의 외부로 융착된 복층필름시트(112)의 외부에 융착되어지고, 상기 복층필름캡(21)의 하부 외측이 철판(11)의 내부로 융착된 다른 복층필름시트(112')의 내부에 융착되어짐으로써, 복층필름층(112)(112')으로 부터 박리되는 것을 막을 수 있게 된다.To this end, the protective coating 2 is composed of a multilayer film cap 21 coated to have a predetermined thickness on the inner peripheral portion and the outer peripheral edge including the cut surface of the synthetic resin-coated corrugated steel pipe (1), the multilayer film cap 21 to wrap three sides
Figure 112006055206086-pat00002
It is configured to be thermally fused to have a shape. That is, the multilayer film cap 21 is fused to the outside of the multilayer film sheet 112, the upper inner side is fused to the outside of the plate 11, the lower outer side of the multilayer film cap 21 is iron plate 11 By being fused to the inside of another multilayer film sheet 112 'fused to the inside of, it is possible to prevent the peeling from the multilayer film layers 112, 112'.

상기 복층필름캡(21)은 합성수지피복 파형강관(1)의 절단면에 열로 융착시키는 과정은 먼저, 합성수지피복 파형강관(1)의 절단된 절단면을 헤어 드라이기와 같은 열풍기를 이용하여 예열하고, 예열된 절단면에 스카치 테이프 형태로 공급되어지는 복층필름의 끝단을 작업자의 손가락이나 손가락의 형태를 갖는 치공구를 이용 하여 눌러 붙임으로써, 절단면을 포함하는 합성수지피복 파형강관(1)의 내외주연부에 직접 융착되게 된다.The multilayer film cap 21 is a heat fusion process to the cut surface of the synthetic resin corrugated steel pipe (1), first, pre-heated the cut surface of the synthetic resin corrugated steel pipe (1) using a hot air blower, such as a hair dryer, preheated By pressing the end of the multilayer film supplied in the form of Scotch tape to the cut surface by using a finger of a worker or a tool having a finger shape, it is directly fused to the inner and outer circumference of the synthetic coated corrugated steel pipe 1 including the cut surface. .

이때 합성수지피복 파형강관(1)의 절단면을 가열한 온풍기의 열이 복층필름층(112)(112')을 같이 예열함으로써, 융착효율이 더 높아지게 된다.At this time, the heat of the warm air heater that heats the cut surface of the synthetic resin-coated corrugated steel pipe 1 preheats the multilayer film layers 112 and 112 'together, thereby increasing the fusion efficiency.

이와 같이, 본 발명은 파형강관 제조기를 통해 제조된 합성수지피복 파형강관의 절단면에 보호코팅부가 열융착되어지도록 함으로써, 이를 운반, 보관 및 시공 과정에서 예리하게 절단된 절단면에 의하여 작업자가 다치는 것을 방지할 수 있도록 한 효과를 얻을 수 있도록 하고, 절단면이 유체와 직접 접촉되는 것을 차단하여 부식되어지는 것을 막고 아울러 보호코팅부가 복층필름층 및 절단면으로 부터 쉽게 박리되는 것을 방지하여 그 수명을 연장시킨 효과를 더 얻을 수 있게 된다.As described above, the present invention allows the protective coating portion to be thermally fused to the cut surface of the synthetic coated corrugated steel pipe manufactured by the corrugated steel pipe manufacturing machine, thereby preventing the operator from being injured by the cut surface sharply cut during transportation, storage and construction. It is possible to obtain the effect that is possible, and to prevent the cut surface from coming into direct contact with the fluid to prevent corrosion and to prevent the protective coating from being easily peeled off from the multilayer film layer and the cut surface to extend the life. You can get it.

Claims (3)

복층필름시트(112)(112')가 철판(111)의 양면에 열융착으로 코팅되어 산형태로 절곡된 단위패널(11)이 형성되어지며 상기 단위패널(11)의 양측단에 길이방향으로 연속되어진 철부걸림턱(113)과 요부걸림턱(114)을 형성하여 나선형태로 걸려 감겨지도록 프레스로 가압되어 하나의 합성수지 피복강관(1)이 형성되어지고, 상기 합성수지피복 파형강관(1)의 절단면에 보호코팅부(2)가 형성된 토목공사의 오폐수관로에 설치되어지는 합성수지피복 파형강관에 있어서,The multilayer film sheets 112 and 112 ′ are coated on both sides of the iron plate 111 by heat fusion to form a unit panel 11 bent in a mountain shape, and are formed in the longitudinal direction at both ends of the unit panel 11. The continuous iron catching jaw 113 and the recessed catching jaw 114 are formed and pressurized by a press to be wound in a spiral shape so that one synthetic resin coated steel pipe 1 is formed, and the synthetic coated corrugated steel pipe 1 of In the synthetic resin-coated corrugated steel pipe which is installed in the waste water pipe line of the civil engineering work with the protective coating (2) formed on the cut surface, 상기 보호코팅부(2)는 합성수지피복 파형강관(1)의 절단면 및 단위패널(11)의 내,외주연부를 감싸는
Figure 112006055206086-pat00008
형태로 융착되어진 복층필름캡(21)으로 구성되어지고, 상기 복층필름캡(21)의 상부 내측은 절판(11)에 융착된 복층필름시트(112)의 외부에 융착되어지고, 상기 복층필름캡(21)의 하부 외측은 철판(11)에 융착된 다른 복층필름시트(112')의 내부에 융착되어짐을 특징으로 하는 합성수지피복 파형강관.The protective coating part 2 surrounds the cut surface of the synthetic resin-coated corrugated steel pipe 1 and the inner and outer peripheral portions of the unit panel 11.
Figure 112006055206086-pat00008
Consisting of a multilayer film cap 21 fused in the form, the upper inner side of the multilayer film cap 21 is fused to the outside of the multilayer film sheet 112 fused to the printing plate 11, the multilayer film cap The lower outer side of the (21) is a synthetic resin coated corrugated steel pipe, characterized in that it is fused to the inside of another multilayer film sheet 112 'fused to the iron plate (11). 삭제delete 삭제delete
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