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KR101089781B1 - Pipe for wear-resistant with easily maintenance - Google Patents

Pipe for wear-resistant with easily maintenance Download PDF

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Publication number
KR101089781B1
KR101089781B1 KR1020110049190A KR20110049190A KR101089781B1 KR 101089781 B1 KR101089781 B1 KR 101089781B1 KR 1020110049190 A KR1020110049190 A KR 1020110049190A KR 20110049190 A KR20110049190 A KR 20110049190A KR 101089781 B1 KR101089781 B1 KR 101089781B1
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KR
South Korea
Prior art keywords
wear
resistant material
resistant
flange
pipe
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Application number
KR1020110049190A
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Korean (ko)
Inventor
김기범
Original Assignee
주식회사 금양테크
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Priority to KR1020110049190A priority Critical patent/KR101089781B1/en
Application granted granted Critical
Publication of KR101089781B1 publication Critical patent/KR101089781B1/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
    • F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B1/00—Layered products having a non-planar shape
    • B32B1/08—Tubular products
    • 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
    • F16L57/00—Protection of pipes or objects of similar shape against external or internal damage or wear
    • F16L57/06—Protection of pipes or objects of similar shape against external or internal damage or wear against wear

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)

Abstract

PURPOSE: A wear-resistant pipe with easy maintenance is provided to enable quick replacement of a wear-resistant material because an outer sheath and the wear-resistant material are not integrated. CONSTITUTION: A wear-resistant pipe with easy maintenance comprises a wear-resistant material(110), mortar(120) which is spread on the exterior of the wear-resistant material, a paper tube(130) which is fixed to the outer side of the mortar, an outer sheath(140) which is manufactured a specified length(H) shorter than the wear-resistant material and fitted to the paper tube, and a flange(150) which is formed in a hollow shape to be fitted to one or both ends of the outer sheath. A plurality of through-holes(151) are formed in the radial direction on the exterior of the flange. One end of the flange and one end of the wear-resistant material are aligned in the vertical direction, and then a welded portion(141) is formed around outer and inner sides where the outer sheath and the flange are joined together. Basalt is used as the wear-resistant material.

Description

유지보수가 용이한 내마모용 파이프{Pipe for wear-resistant with easily maintenance}Pipe for wear-resistant with easily maintenance

본 발명은 유지보수가 용이한 내마모용 파이프에 관한 것으로, 더욱 상세하게는 손상 또는 파손되는 내마모재를 외피에서 쉽게 분리시켜 유지보수의 용이성을 확보함은 물론 외피를 재활용할 수 있도록 하는 유지보수가 용이한 내마모용 파이프에 관한 것이다.
The present invention relates to a wear-resistant pipe that is easy to maintain, and more particularly, to easily remove the damaged or damaged wear-resistant material from the outer shell to ensure ease of maintenance and to maintain the outer shell to be recycled. It relates to a wear-resistant pipe that is easy to repair.

일반적으로 내마모용 파이프는 제철소 또는 발전소 등에서 원료 또는 운송물 등을 이송하기 위한 설비에 설치되어 내마모성을 확보하는 역할을 수행한다.In general, the wear-resistant pipe is installed in a facility for transferring raw materials or transport materials in a steel mill or a power plant to secure wear resistance.

이러한 내마모용 파이프(1)는 도 1에 도시된 바와 같이 외피(30)의 내경에 몰탈(20)을 도포한 후 내마모재(10)를 견고하게 고정하는 특성상 내마모재(10)가 마모되거나 또는 심한 충격으로 파손될 경우 재사용할 수 있는 외피(30)까지 모두 폐기처리해야 하는 비효율적인 문제점을 갖게 되었다.The wear-resistant pipe 1 is a wear-resistant material 10 is characterized in that the wear-resistant material 10 is firmly fixed after applying the mortar 20 to the inner diameter of the outer shell 30 as shown in FIG. When worn or damaged by a severe impact, there is an inefficient problem that must be disposed of up to the reusable outer shell (30).

더구나 내마모재(10)와 함께 재사용할 수 있는 외피(30)를 폐기해야함과 동시에 새로운 내마모용 파이프를 제작해야 하므로 경제적인 부담이 이중으로 가중되는 심각한 문제점을 갖게 되었다.In addition, since the outer shell 30 that can be reused together with the wear resistant material 10 must be discarded, a new wear pipe has to be manufactured, and thus the economic burden is seriously doubled.

특히 재사용할 수 있는 외피(30)를 그대로 폐기해야한다는 것은 원가절감 차원은 물론 자원의 재활용 측면에서 살펴보면 매우 불합리한 문제점을 갖게 되었다.In particular, it is necessary to dispose of the reusable envelope 30 as it is, in terms of cost reduction as well as recycling of resources.

아울러 종래의 내마모용 파이프(1)의 일단 또는 양단에는 플랜지(40)가 용접되어 있으나, 이는 외피(30)와 플랜지(40)가 맞닿는 일측에만 빙둘러 용접부(42)가 형성된 상태로 외부충격 및 진동으로 균열이 발생하여 사용수명 및 내구성이 단축되는 문제점을 갖게 되었다.
In addition, the flange 40 is welded to one end or both ends of the conventional wear-resistant pipe (1), but the outer shock in the state in which the weld portion 42 is formed only around one side where the outer shell 30 and the flange 40 abuts And cracks are generated by vibration and has a problem of shortening the service life and durability.

따라서 본 발명은 상기와 같은 종래의 문제점을 해결하기 위해 안출된 것으로서,Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art,

본 발명은 외피와 내마모재의 사이에 지관을 마련하여 내마모재가 손상 및 마모될 경우 지관과 함께 내마모재를 외피에서 분리시켜 외피를 재활용할 수 있는 유지보수가 용이한 내마모용 파이프를 제공함에 목적이 있다.The present invention provides an easy-to-maintain wear-resistant pipe that can be provided between the shell and the wear-resistant material to separate the wear-resistant material from the shell together with the paper pipe when the wear-resistant material is damaged and worn. There is a purpose.

또한, 본 발명은 외피의 일단을 기준으로 플랜지의 일단을 외측으로 일정간격 이격되도록 이동시킨 후 외피와 플랜지가 맞닿는 외측과 내측에 빙둘러 용접부를 형성하여 견고한 고정상태를 확보할 수 있는 유지보수가 용이한 내마모용 파이프를 제공함에 다른 목적이 있다.
In addition, the present invention is to maintain the fixed fixed state by moving the one end of the flange to the outer space relative to one end of the outer space and then to form a weld around the outer and the inner side where the outer surface and the flange abuts Another object is to provide an easy wear resistant pipe.

본 발명은 중공형태의 일정길이를 갖는 내마모재(110)와; 상기 내마모재(110)의 외경에 도포되는 몰탈(120)과; 상기 몰탈(120)의 외경에 고정되는 지관(130)과; 상기 지관(130)의 외경에 끼워져 고정되되 상기 내마모재(110)의 길이보다 일정길이(H)만큼 더 짧게 제작되는 외피(140)와; 상기 외피(140)의 일단 또는 양단에 끼워지도록 중앙이 비어있는 중공형태로 외측에는 방사상으로 다수의 통공(151)이 형성되는 플랜지(150)의 일단과 상기 내마모재(110)와 일단이 수직방향으로 서로 일치되도록 위치시킨 후 상기 외피(140)와 플랜지(150)가 맞닿는 외측과 내측에 빙둘러 용접부(141)가 형성되는 것을 특징으로 한다.The present invention is a wear-resistant material 110 having a predetermined length of the hollow shape; Mortar 120 is applied to the outer diameter of the wear-resistant material 110 and; A branch pipe 130 fixed to an outer diameter of the mortar 120; An outer shell 140 inserted into and fixed to an outer diameter of the branch pipe 130 and manufactured to be shorter by a predetermined length H than the length of the wear-resistant material 110; One end of the flange 150 having a plurality of through-holes 151 radially formed at an outer side thereof in a hollow shape having a hollow center so as to be fitted to one end or both ends of the outer shell 140 and one end thereof perpendicular to the wear resistant material 110. After positioning so as to coincide with each other in the direction characterized in that the weld portion 141 is formed around the outer and the inner side where the outer shell 140 and the flange 150 abut.

여기서 상기 내마모재(110)는 바잘트가 사용되는 것을 특징으로 한다.Here, the wear-resistant material 110 is characterized in that the bazalt is used.

이때 상기 내마모재(110)와 지관(130)의 외측은 수직방향으로 서로 일치되도록 결합되고 상기 외피(130)는 상기 내마모재(110)의 외측에서 내측으로 일정길이(H)만큼 이격되는 위치에 고정될 수 있는 길이를 갖도록 제작되는 것을 특징으로 한다.
At this time, the outer side of the wear-resistant material 110 and the branch pipe 130 are coupled to match each other in the vertical direction and the outer shell 130 is spaced apart by a predetermined length (H) from the outside of the wear-resistant material 110 to the inside. It is characterized in that it is manufactured to have a length that can be fixed in position.

본 발명은 지금까지 외피와 내마모재가 일체형으로 제작되던 획일적인 구조를 탈피하여 마모 또는 손상되는 내마모재를 신속하게 교체할 수 있으므로 유지보수 및 작업효율을 증대시킬 수 있는 효과를 갖는다.The present invention has the effect of increasing the maintenance and work efficiency because it is possible to quickly replace the wear material that is worn or damaged by escaping the uniform structure that the shell and the wear material is made in one piece so far.

또한, 본 발명은 마모 또는 손상되는 내마모재를 분리시키고 외피는 재활용할 수 있으므로 불필요하게 낭비되는 제작비용을 절감하여 경제적인 이익을 창출할 수 있는 효과를 갖는다.In addition, the present invention has the effect of separating the wear-resistant or damaged wear material and the outer shell can be recycled, thereby reducing the unnecessary waste of manufacturing costs and create economic benefits.

특히 본 발명은 외피와 플랜지를 견고하게 고정시켜 외부충격 및 진동으로 발생하는 균열 및 이탈을 방지하여 내마모용 파이프의 내구성은 물론 사용수명을 향상시킬 수 있는 효과를 갖는다.In particular, the present invention has the effect of firmly fixing the outer shell and the flange to prevent cracking and detachment caused by external impact and vibration to improve the durability and wear life of the wear-resistant pipe.

아울러 본 발명은 구조가 간단하고 제작이 용이하여 사용효율 및 활용범위를 극대화할 수 있는 효과를 갖는다.
In addition, the present invention has a simple structure and easy to manufacture has the effect of maximizing the use efficiency and utilization range.

도 1은 일반적인 내마모용 파이프의 구조를 나타내기 위한 단면도.
도 2는 본 발명 유지보수가 용이한 내마모용 파이프의 구조를 나타내기 위한 단면도.
도 3은 본 발명 유지보수가 용이한 내마모용 파이프의 구조를 나타내기 위한 측면도.1 is a cross-sectional view showing the structure of a general wear-resistant pipe.
Figure 2 is a cross-sectional view showing the structure of the wear-resistant pipe for easy maintenance of the present invention.
Figure 3 is a side view for showing the structure of the wear-resistant pipe for easy maintenance of the present invention.

상기한 바와 같이 본 발명의 구성을 첨부한 도면에 의해 상세히 설명하면 다음과 같다. When described in detail by the accompanying drawings, the configuration of the present invention as described above are as follows.

도 2는 본 발명 유지보수가 용이한 내마모용 파이프의 구조를 나타내기 위한 단면도이고, 도 3은 본 발명 유지보수가 용이한 내마모용 파이프의 구조를 나타내기 위한 측면도를 도시한 것이다.Figure 2 is a cross-sectional view showing the structure of the wear-resistant pipe for easy maintenance of the present invention, Figure 3 is a side view for showing the structure of the wear-resistant pipe for easy maintenance of the present invention.

본 발명은 중공형태의 일정길이를 갖는 내마모재(110)와; 상기 내마모재(110)의 외경에 도포되는 몰탈(120)과; 상기 몰탈(120)의 외경에 고정되는 지관(130)과; 상기 지관(130)의 외경에 억지로 끼워져 고정되되 상기 내마모재(110)의 길이보다 일정길이(H)만큼 더 짧게 제작되는 외피(140)와; 상기 외피(140)의 일단 또는 양단에 끼워지도록 중앙이 비어있는 중공형태로 외측에는 방사상으로 다수의 통공(151)이 형성되는 플랜지(150)의 일단과 상기 내마모재(110)와 일단이 수직방향으로 서로 일치되도록 위치시킨 후 상기 외피(140)와 플랜지(150)가 맞닿는 외측과 내측에 빙둘러 용접부(141)가 형성된다.The present invention is a wear-resistant material 110 having a predetermined length of the hollow shape; Mortar 120 is applied to the outer diameter of the wear-resistant material 110 and; A branch pipe 130 fixed to an outer diameter of the mortar 120; The outer shell 140 is forcibly inserted into and fixed to the outer diameter of the branch pipe 130, and is made shorter by a predetermined length (H) than the length of the wear-resistant material 110; One end of the flange 150 having a plurality of through-holes 151 radially formed at an outer side thereof in a hollow shape having a hollow center so as to be fitted to one end or both ends of the outer shell 140 and one end thereof perpendicular to the wear resistant material 110. After locating to coincide with each other in the direction, the weld part 141 is formed around the outer side and the inner side where the outer shell 140 and the flange 150 contact each other.

본 발명에서 상기 내마모재(110)는 내마모성 및 내구성이 우수한 바잘트(basalt)을 사용됨이 바람직하나, 작업상황에 따라서 다양한 내마모재가 사용될 수 있음은 당연하다.In the present invention, the wear-resistant material 110 is preferably used basalt (basalt) excellent in wear resistance and durability, it is natural that a variety of wear-resistant materials can be used according to the working situation.

이때 상기 바잘트는 화산암의 일종인 현무암을 용융하여 주조한 후 특수 열처리 과정을 통해서 제작되는 내마모재의 일종으로, 이에 대한 성분 및 효과는 당업계에서 보편적으로 사용되는 공지기술이므로 상세한 서술은 생략하기로 한다.At this time, the bazalt is a kind of wear-resistant material produced by melting and casting basalt, which is a kind of volcanic rock, through a special heat treatment process, and a detailed description thereof will be omitted since the ingredients and effects thereof are well known in the art. do.

한편, 상기 몰탈(120)은 상기 내마모재(110)와 지관(130)을 견고하게 고정시키기 위한 고착제 역할을 수행한다.On the other hand, the mortar 120 serves as a fixing agent for firmly fixing the wear-resistant material 110 and the branch pipe 130.

이때 상기 몰탈(120)은 작업상황에 따라서 다양한 고착제가 사용될 수 있음은 당연하다.At this time, it is obvious that the mortar 120 may use various fixing agents depending on the working situation.

또한, 상기 지관(130)은 종이재질의 압축된 관체로 상기 외피(140)와 내마모재(110) 및 몰탈(120)의 사이에 위치하여 상기 내마모재(110)가 마모 또는 손상될 경우 작업자가 상기 지관(130)을 작업도구를 이용하여 벗겨낼 경우 상기 내마모재(110)와 함께 제거되면서 상기 외피(140)를 재활용하기 위한 매우 중요한 구성이다.In addition, the branch pipe 130 is a compressed material made of a paper material is located between the outer shell 140 and the wear-resistant material 110 and mortar 120 when the wear-resistant material 110 is worn or damaged When the worker peels off the branch pipe 130 using the work tool, it is a very important configuration for recycling the outer shell 140 while being removed together with the wear-resistant material 110.

이때 상기 지관(130)은 몰탈을 사용하지 않고 상기 외피(140)에 억지끼움 방식으로 끼워져 견고하게 고정된다.At this time, the branch pipe 130 is firmly fixed by being inserted into the outer shell 140 by using a mortar without using mortar.

따라서 작업자가 상기 외피(140)에서 지관(130)을 어렵지 않게 뜯어서 제거시킬 수 있다.Therefore, the worker can easily remove the paper tube 130 from the shell 140 by removing it.

한편, 상기 외피(140)는 운송물의 이동시 발생하는 마찰로 인한 마모 및 손상이 발생하는 상기 내마모재(110)에 비해서 상대적으로 외부에 위치한 특성상 사용수명 및 내구성이 확보되어 수차례 재활용할 수 있다.On the other hand, the outer shell 140 may be recycled several times because of its service life and durability is secured in comparison to the wear-resistant material 110, the wear and damage caused by the friction generated during the movement of the transport is relatively located outside. .

아울러 상기 플랜지(150)는 다수의 내마모용 파이프를 서로 연결시키기 위한 구성으로, 견고하게 상기 외피(140)와 고정될 수 있도록 상기 플랜지(150)의 일단과 상기 내마모재(110)와 일단이 수직방향으로 서로 일치되도록 위치시킨 후 상기 외피(140)와 플랜지(150)가 맞닿는 외측과 내측에 빙둘러 용접부(141)가 형성된다.In addition, the flange 150 is configured to connect a plurality of wear-resistant pipes to each other, so that one end of the flange 150 and the wear-resistant material 110 and one end so as to be firmly fixed to the outer shell 140. After aligning with each other in the vertical direction, the weld part 141 is formed around the outer side and the inner side where the outer shell 140 and the flange 150 contact each other.

즉, 종래에는 플랜지와 외피가 맞닿는 외측에만 용접을 하게 되므로 충격 및 진동이 발생할 경우 내측에 균열이 발생하는 문제가 발생하기 때문에 이를 해소하기 위해서 도 2의 확대부분에 도시된 바와 같이 상기 외피(140)와 플랜지(150)가 맞닿는 외측과 내측에 빙둘러 용접부(141)를 형성하게 되었다.That is, in the related art, since the welding is performed only on the outer side where the flange and the outer shell abut, a problem occurs that a crack occurs on the inner side when an impact and vibration occur, so as to solve this problem, as shown in the enlarged part of FIG. ) And the flange 150 to form a weld 141 around the outer side and the inner side.

따라서 본 발명은 상기 내마모재(110)가 손상될 경우 작업자가 상기 지관(130)과 내마모재(110)를 함께 뜯어내어 제거할 수 있으므로 외피(140)를 재활용할 수 있다.Therefore, in the present invention, when the wear-resistant material 110 is damaged, the worker can tear off the branch pipe 130 and the wear-resistant material 110 together, so that the outer shell 140 can be recycled.

이처럼 상기와 같이 본 발명의 실시예에 대하여 상세히 설명하였으나, 본 발명의 권리범위는 이에 한정되지 않으며, 본 발명의 실시예와 실질적으로 균등의 범위에 있는 구성까지 본 발명의 권리범위에 포함됨은 당연하다.
As described above, the embodiments of the present invention have been described in detail, but the scope of the present invention is not limited thereto, and it is natural that the present invention is included in the scope of the present invention to a configuration that is substantially equivalent to the embodiments of the present invention. Do.

1: 종래 내마모용 파이프
10: 내마모재 20: 몰탈
30: 외피 40: 플랜지
41: 통공 42: 용접부
100: 본 발명 유지보수가 용이한 내마모용 파이프
110: 내마모재 120: 몰탈
130: 지관(紙管) 140: 외피
141: 용접부 150: 플랜지
151: 통공
H: 일정길이1: conventional wear-resistant pipe
10: wear-resistant material 20: mortar
30: jacket 40: flange
41: through hole 42: weld
100: wear-resistant pipe easy to maintain the invention
110: wear-resistant material 120: mortar
130: branch pipe 140: shell
141: weld 150: flange
151: through
H: length

Claims (3)

중공형태의 일정길이를 갖는 내마모재(110)와; 상기 내마모재(110)의 외경에 도포되는 몰탈(120)과; 상기 몰탈(120)의 외경에 고정되는 지관(130)과; 상기 지관(130)의 외경에 억지로 끼워져 고정되되 상기 내마모재(110)의 길이보다 일정길이(H)만큼 더 짧게 제작되는 외피(140)와; 상기 외피(140)의 일단 또는 양단에 끼워지도록 중앙이 비어있는 중공형태로 외측에는 방사상으로 다수의 통공(151)이 형성되는 플랜지(150)의 일단과 상기 내마모재(110)와 일단이 수직방향으로 서로 일치되도록 위치시킨 후 상기 외피(140)와 플랜지(150)가 맞닿는 외측과 내측에 빙둘러 용접부(141)가 형성되고 상기 내마모재(110)는 바잘트가 사용되며 상기 내마모재(110)와 지관(130)의 외측은 수직방향으로 서로 일치되도록 결합되고 상기 외피(140)는 상기 내마모재(110)의 외측에서 내측으로 일정길이(H)만큼 이격되는 위치에 고정될 수 있는 길이를 갖도록 제작되는 것을 특징으로 하는 유지보수가 용이한 내마모용 파이프.Wear-resistant material 110 having a predetermined length of the hollow shape; Mortar 120 is applied to the outer diameter of the wear-resistant material 110 and; A branch pipe 130 fixed to an outer diameter of the mortar 120; The outer shell 140 is forcibly inserted into and fixed to the outer diameter of the branch pipe 130, and is made shorter by a predetermined length (H) than the length of the wear-resistant material 110; One end of the flange 150 having a plurality of through-holes 151 radially formed at an outer side thereof in a hollow shape having a hollow center so as to be fitted to one end or both ends of the outer shell 140 and one end thereof perpendicular to the wear resistant material 110. After aligning with each other in the direction of the outer shell 140 and the flange 150, the welded portion 141 is formed around the outside and the inside contacted with the wear-resistant material 110 is a bazaal is used and the wear-resistant material The outer side of the 110 and the branch pipe 130 is coupled to match each other in the vertical direction and the outer shell 140 may be fixed at a position spaced apart by a predetermined length (H) from the outside of the wear-resistant material (110). Easy-to-maintenance wear-resistant pipe, characterized in that is made to have a length. 삭제delete 삭제delete
KR1020110049190A 2011-05-24 2011-05-24 Pipe for wear-resistant with easily maintenance KR101089781B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102537533A (en) * 2011-12-13 2012-07-04 中联重科股份有限公司 Material conveying machine, composite structure conveying pipe and manufacturing method thereof
KR20210146623A (en) 2020-05-27 2021-12-06 강형민 Fluid transport structure repair method and device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200313864Y1 (en) 2003-01-18 2003-05-22 조보행 A metal pipe for piping that armor finish are equip by all in one
KR100394478B1 (en) 2000-12-20 2003-08-09 동도바잘트산업(주) Reinforcement method for basalt tube and its expedient

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100394478B1 (en) 2000-12-20 2003-08-09 동도바잘트산업(주) Reinforcement method for basalt tube and its expedient
KR200313864Y1 (en) 2003-01-18 2003-05-22 조보행 A metal pipe for piping that armor finish are equip by all in one

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102537533A (en) * 2011-12-13 2012-07-04 中联重科股份有限公司 Material conveying machine, composite structure conveying pipe and manufacturing method thereof
CN102537533B (en) * 2011-12-13 2015-04-08 中联重科股份有限公司 Material conveying machine, composite structure conveying straight pipe and manufacturing method thereof
KR20210146623A (en) 2020-05-27 2021-12-06 강형민 Fluid transport structure repair method and device

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