CN113898795A - Prefabricated composite pipe structure for municipal drainage and preparation process thereof - Google Patents
Prefabricated composite pipe structure for municipal drainage and preparation process thereof Download PDFInfo
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- CN113898795A CN113898795A CN202111181614.0A CN202111181614A CN113898795A CN 113898795 A CN113898795 A CN 113898795A CN 202111181614 A CN202111181614 A CN 202111181614A CN 113898795 A CN113898795 A CN 113898795A
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- Prior art keywords
- pipe
- wall
- socket
- glass fiber
- fiber reinforced
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Classifications
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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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B21/00—Methods or machines specially adapted for the production of tubular articles
- B28B21/02—Methods or machines specially adapted for the production of tubular articles by casting into moulds
- B28B21/04—Methods or machines specially adapted for the production of tubular articles by casting into moulds by simple casting, the material being neither positively compacted nor forcibly fed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B21/00—Methods or machines specially adapted for the production of tubular articles
- B28B21/56—Methods or machines specially adapted for the production of tubular articles incorporating reinforcements or inserts
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/04—Pipes or fittings specially adapted to sewers
-
- 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
- F16L57/02—Protection of pipes or objects of similar shape against external or internal damage or wear against cracking or buckling
-
- 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
- F16L58/1009—Coatings characterised by the materials used by rubber or plastics the coating being placed inside the pipe
- F16L58/1036—Coatings characterised by the materials used by rubber or plastics the coating being placed inside the pipe the coating being a preformed pipe
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Sink And Installation For Waste Water (AREA)
Abstract
The invention discloses a prefabricated composite pipe structure for municipal drainage, which comprises an outer pipe and an inner pipe, wherein the inner pipe is lined on the inner wall of the outer pipe, the inner pipe comprises a socket, a middle pipe body and a socket, and the socket are respectively arranged at the left end and the right end of the middle pipe body; the outer pipe is of a reinforced concrete structure, namely a steel reinforcement framework, commonly called a steel reinforcement cage, is arranged in the outer pipe and is cast and molded together with concrete, and the wall thickness of the outer pipe is 100-180 mm; the inner pipe is of a glass fiber reinforced plastic structure, the outer wall of the glass fiber reinforced plastic is subjected to sand blasting, and the wall thickness of the inner pipe is 4-8 mm. The invention has the characteristics of excellent corrosion resistance, wear resistance, oil resistance, stain resistance and the like, and has smooth and smooth inner wall, small flow resistance and strong drainage capability.
Description
Technical Field
The invention relates to the technical field of municipal drainage, in particular to a prefabricated composite pipe structure for municipal drainage and a preparation process thereof.
Background
The municipal drainage pipeline system is an indispensable important municipal infrastructure of a modern city, is also a backbone project for urban water pollution control and urban waterlogging drainage and flood control, and has the task of collecting and conveying domestic water, industrial wastewater and rainfall generated in the city in time. The method has the functions of timely and reliably discharging domestic sewage, industrial wastewater and rainfall generated in urban areas, and preventing cities from being harmed by sewage and from being damaged by rainstorm and ponding, thereby creating a comfortable and safe living and production environment for people, enabling the energy flow and the material circulation of an urban ecological system to be normally carried out, maintaining ecological balance and ensuring sustainable development. At present, domestic drainage pipelines mainly comprise reinforced concrete pipelines, plastic pipelines, glass fiber reinforced plastic pipelines, brick (stone) built channels and the like, wherein the reinforced concrete pipelines are formed by pouring concrete, have various structural forms, are widely applied and low in manufacturing cost, but have rough inner walls and large frictional resistance, and are mainly suitable for hard gravity fluid; the plastic pipeline is widely applicable to drainage pipelines in various building environments, has the characteristics of small fluid resistance, high conveying efficiency, light weight, convenient installation and maintenance, reliable performance, good sealing performance, long service life and the like, but has lower rigidity and weaker pressure resistance; the glass fiber reinforced plastic pipeline is a novel composite material pipe and has the characteristics of water resistance, corrosion resistance, temperature resistance, pollution resistance, wear resistance and the like, but the pure glass pipeline has lower rigidity and weaker pressure resistance. Therefore, it is an urgent need of those skilled in the art to develop a composite drain pipe structure with high compressive strength, good corrosion resistance and small flow resistance by comprehensively considering several common pipeline characteristics in the prior art.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a prefabricated composite pipe structure for municipal drainage, which has the advantages of high compressive strength, good wear resistance and corrosion resistance, temperature resistance, dirt resistance and small flow resistance, and a preparation process thereof.
In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows: a prefabricated composite pipe structure for municipal drainage comprises an outer pipe and an inner pipe, wherein the inner pipe is lined on the inner wall of the outer pipe, the inner pipe comprises a socket, a middle pipe body and a socket, and the socket are respectively arranged at the left end and the right end of the middle pipe body; the outer pipe is of a reinforced concrete structure, namely a steel reinforcement framework, commonly called a steel reinforcement cage, is arranged in the outer pipe and is cast and molded together with concrete, and the wall thickness of the outer pipe is 100-180 mm; the inner pipe is of a glass fiber reinforced plastic structure, the outer wall of the glass fiber reinforced plastic is subjected to sand blasting, and the wall thickness of the inner pipe is 4-8 mm.
Furthermore, the socket, the bell mouth and the middle pipe body are integrally formed, the socket is cylindrical, two sealing grooves are formed in the outer wall of the socket, and a sealing ring needs to be installed in each sealing groove; the bellmouth is tubaeform, and the internal diameter of bellmouth suits with the external diameter size of socket, the inner wall of bellmouth is provided with the toper and recognizes the mouth.
Furthermore, the outer diameters of the socket and the socket are larger than the outer diameter of the middle pipe body.
Furthermore, the socket is tightly connected with the socket of the next section, namely the socket and the socket are in interference fit through a sealing ring.
A preparation method of a prefabricated composite pipe structure for municipal drainage comprises the following steps:
step 1: pre-customizing a glass fiber reinforced plastic inner tube, wherein the outer wall of the glass tube is required to be subjected to sand blasting, and the specific process is that after the outer wall of the glass tube is coated with glue, 4-5 mm type quartz sand is fixedly coated on the surface of the outer wall of the glass fiber reinforced plastic by adopting a spray coating process;
and step 3: manufacturing a special die comprising an inner die, an outer die, a die base and a top cover according to the specification requirement of the prefabricated composite pipe;
step 4: adopting wire rods with the diameter of 6-10 mm to weld cylindrical net-shaped reinforcing ribs, namely a reinforcement cage, wherein the specification of the reinforcement cage is smaller than a reserved amount of the outer wall of the composite pipe;
and 5: the concrete paddle was made according to the following mix ratio (calculated per cube): 432kg of cement, 742kg of sand, 748kg of 10-12 mm type gravel, 320kg of 0.5 gravel, 4.3kg of water reducing agent and 145kg of water;
step 6: vertically placing the glass fiber reinforced plastic inner pipe on a mold base, and supporting an inner mold on the inner wall of the glass fiber reinforced plastic inner pipe; sleeving a reinforcement cage on the outer side of the glass fiber reinforced plastic inner pipe to enable a gap to be reserved between the reinforcement cage and the outer wall of the glass fiber reinforced plastic inner pipe, and sleeving an outer die on the outer side of the reinforcement cage to enable a gap to be reserved between the reinforcement cage and the inner wall of the outer die; the top cover is buckled at the top of the die, and the top cover is pre-tightened to play a role in supporting and positioning the outer die, the reinforcement cage and the glass fiber reinforced plastic inner tube;
and 7: placing a feeder at the top of the mould, pouring concrete paddles into a gap between the outer wall of the glass fiber reinforced plastic and the inner wall of the outer mould through the feeder, so that a reinforcement cage is built in the concrete and is poured and molded together with the concrete to form an outer pipe of a reinforced concrete structure;
and 8: and (3) standing for 10-12 times after the concrete is poured, naturally solidifying, and gradually dismantling the die to obtain a finished prefabricated composite pipe.
The invention has the beneficial effects that:
by adopting the technical scheme, the concrete components are scientifically proportioned, so that the outer pipe has higher compressive strength; the glass fiber reinforced plastic material is adopted as the inner pipe, so that the invention has the characteristics of excellent corrosion resistance, wear resistance, oil resistance, stain resistance and the like, and the inner wall is smooth, the flow resistance is small, and the drainage capability is strong.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural view of the outer tube of the present invention.
FIG. 3 is a schematic structural view of the inner tube of the present invention.
Figure 4 is an enlarged view of a portion of a seal slot of the present invention.
Fig. 5 is an enlarged partial view of a cone seam of the present invention.
In the figure: 100-outer pipe, 200-inner pipe, 201-spigot, 2011-seal groove, 202-middle pipe body, 203-socket and 2031-conical joint.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the functions of the invention clearer and easier to understand, the invention is further explained by combining the attached drawings and the specific embodiments.
Referring to fig. 1 to 5, the prefabricated composite pipe structure for municipal drainage provided by the invention comprises an outer pipe 100 and an inner pipe 200, wherein the inner pipe 200 is lined on the inner wall of the outer pipe 100, the inner pipe 200 comprises a socket 201, a middle pipe body 202 and a socket 203, and the socket 201 and the socket 203 are respectively arranged at the left end and the right end of the middle pipe body 202; the outer pipe 100 is of a reinforced concrete structure, namely a steel reinforcement framework, commonly called a steel reinforcement cage, is arranged in the outer pipe and is cast and molded together with concrete, and the wall thickness of the outer pipe 100 is 100-180 mm; the inner pipe 200 is made of glass fiber reinforced plastic, the outer wall of the glass fiber reinforced plastic is subjected to sand blasting, and the wall thickness of the inner pipe 200 is 4-8 mm.
According to the invention, a socket 201, a socket 203 and a middle pipe body 202 are integrally formed, the socket 201 is cylindrical, two sealing grooves 2011 are formed in the outer wall of the socket 201, and sealing rings need to be installed in the sealing grooves 2011; the bell mouth 203 is in a horn shape, the inner diameter of the bell mouth 203 is matched with the outer diameter of the socket, and the inner wall of the bell mouth 203 is provided with a conical recognizing mouth 2031.
According to the invention, the outer diameters of the socket 201 and the socket 203 are larger than the outer diameter of the middle pipe body 202, so that the inner pipe 200 and the outer pipe 100 can be firmly clamped and prevented from falling off.
According to the invention, the bell mouth 203 is tightly connected with the socket 201 of the next section, namely the bell mouth 203 and the socket 201 are in interference fit through the sealing ring, and the structural design can play a good sealing role and is not easy to leak.
During the use, at first install the sealing washer in the seal groove, utilize lifting device to put into the gallery that digs in advance in proper order with prefabricated compound pipe, make the bellmouth 203 of prefabricated compound pipe aim at the socket 201 of next section prefabricated compound pipe, under artificial cooperation with bellmouth 203 with next section socket 201 zonulae occludens together, finish when a plurality of prefabricated compound pipes that connect in proper order to form coherent municipal administration drainage pipe gallery. The prefabricated composite pipe with the structure has the characteristics of excellent corrosion resistance, wear resistance, oil resistance, stain resistance and the like, and the inner wall is smooth, small in flow resistance and strong in drainage capacity.
A preparation method of a prefabricated composite pipe structure for municipal drainage comprises the following steps:
step 1: pre-customizing a glass fiber reinforced plastic inner tube, wherein the outer wall of the glass tube is required to be subjected to sand blasting, and the specific process is that after the outer wall of the glass tube is coated with glue, 4-5 mm type quartz sand is fixedly coated on the surface of the outer wall of the glass fiber reinforced plastic by adopting a spray coating process;
and step 3: manufacturing a special die comprising an inner die, an outer die, a die base and a top cover according to the specification requirement of the prefabricated composite pipe;
step 4: adopting wire rods with the diameter of 6-10 mm to weld cylindrical net-shaped reinforcing ribs, namely a reinforcement cage, wherein the specification of the reinforcement cage is smaller than a reserved amount of the outer wall of the composite pipe;
and 5: the concrete paddle was made according to the following mix ratio (calculated per cube): 432kg of cement, 742kg of sand, 748kg of 10-12 mm type gravel, 320kg of 0.5 gravel, 4.3kg of water reducing agent and 145kg of water;
step 6: vertically placing the glass fiber reinforced plastic inner pipe on a mold base, and supporting an inner mold on the inner wall of the glass fiber reinforced plastic inner pipe; sleeving a reinforcement cage on the outer side of the glass fiber reinforced plastic inner pipe to enable a gap to be reserved between the reinforcement cage and the outer wall of the glass fiber reinforced plastic inner pipe, and sleeving an outer die on the outer side of the reinforcement cage to enable a gap to be reserved between the reinforcement cage and the inner wall of the outer die; the top cover is buckled at the top of the die, and the top cover is pre-tightened to play a role in supporting and positioning the outer die, the reinforcement cage and the glass fiber reinforced plastic inner tube;
and 7: placing a feeder at the top of the mould, pouring concrete paddles into a gap between the outer wall of the glass fiber reinforced plastic and the inner wall of the outer mould through the feeder, so that a reinforcement cage is built in the concrete and is poured and molded together with the concrete to form an outer pipe of a reinforced concrete structure;
and 8: and (3) standing for 10-12 times after the concrete is poured, naturally solidifying, and gradually dismantling the die to obtain a finished prefabricated composite pipe.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications made according to the design concept of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A prefabricated composite pipe structure for municipal drainage comprises an outer pipe and an inner pipe, and is characterized in that the inner pipe is lined on the inner wall of the outer pipe, the inner pipe comprises a socket, a middle pipe body and a socket, and the socket are respectively arranged at the left end and the right end of the middle pipe body; the outer pipe is of a reinforced concrete structure, namely a steel reinforcement framework, commonly called a steel reinforcement cage, is arranged in the outer pipe and is cast and molded together with concrete, and the wall thickness of the outer pipe is 100-180 mm; the inner pipe is of a glass fiber reinforced plastic structure, the outer wall of the glass fiber reinforced plastic is subjected to sand blasting, and the wall thickness of the inner pipe is 4-8 mm.
2. The prefabricated composite pipe structure for municipal drainage according to claim 1, wherein the spigot, the socket and the middle pipe body are integrally formed, the spigot is cylindrical, two sealing grooves are formed in the outer wall of the spigot, and a sealing ring is required to be installed in each sealing groove; the bellmouth is tubaeform, and the internal diameter of bellmouth suits with the external diameter size of socket, the inner wall of bellmouth is provided with the toper and recognizes the mouth.
3. The prefabricated composite pipe structure for municipal drainage according to claim 1, wherein the spigot and socket have an outer diameter greater than the outer diameter of the central pipe body.
4. The prefabricated composite pipe structure for municipal drainage according to claim 1, wherein the socket is tightly connected with the socket of the next section, i.e. the socket and the socket are in interference fit through a sealing ring.
5. A preparation method of a prefabricated composite pipe structure for municipal drainage is characterized by comprising the following steps:
step 1: pre-customizing a glass fiber reinforced plastic inner tube, wherein the outer wall of the glass tube is required to be subjected to sand blasting, and the specific process is that after the outer wall of the glass tube is coated with glue, 4-5 mm type quartz sand is fixedly coated on the surface of the outer wall of the glass fiber reinforced plastic by adopting a spray coating process;
and step 3: manufacturing a special die comprising an inner die, an outer die, a die base and a top cover according to the specification requirement of the prefabricated composite pipe;
step 4: adopting wire rods with the diameter of 6-10 mm to weld cylindrical net-shaped reinforcing ribs, namely a reinforcement cage, wherein the specification of the reinforcement cage is smaller than a reserved amount of the outer wall of the composite pipe;
and 5: the concrete paddle was made according to the following mix ratio (calculated per cube): 432kg of cement, 742kg of sand, 748kg of 10-12 mm type gravel, 320kg of 0.5 gravel, 4.3kg of water reducing agent and 145kg of water;
step 6: vertically placing the glass fiber reinforced plastic inner pipe on a mold base, and supporting an inner mold on the inner wall of the glass fiber reinforced plastic inner pipe; sleeving a reinforcement cage on the outer side of the glass fiber reinforced plastic inner pipe to enable a gap to be reserved between the reinforcement cage and the outer wall of the glass fiber reinforced plastic inner pipe, and sleeving an outer die on the outer side of the reinforcement cage to enable a gap to be reserved between the reinforcement cage and the inner wall of the outer die; the top cover is buckled at the top of the die, and the top cover is pre-tightened to play a role in supporting and positioning the outer die, the reinforcement cage and the glass fiber reinforced plastic inner tube;
and 7: placing a feeder at the top of the mould, pouring concrete paddles into a gap between the outer wall of the glass fiber reinforced plastic and the inner wall of the outer mould through the feeder, so that a reinforcement cage is built in the concrete and is poured and molded together with the concrete to form an outer pipe of a reinforced concrete structure;
and 8: and (3) standing for 10-12 times after the concrete is poured, naturally solidifying, and gradually dismantling the die to obtain a finished prefabricated composite pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111181614.0A CN113898795A (en) | 2021-10-11 | 2021-10-11 | Prefabricated composite pipe structure for municipal drainage and preparation process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111181614.0A CN113898795A (en) | 2021-10-11 | 2021-10-11 | Prefabricated composite pipe structure for municipal drainage and preparation process thereof |
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| Publication Number | Publication Date |
|---|---|
| CN113898795A true CN113898795A (en) | 2022-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111181614.0A Pending CN113898795A (en) | 2021-10-11 | 2021-10-11 | Prefabricated composite pipe structure for municipal drainage and preparation process thereof |
Country Status (1)
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU3988595A (en) * | 1994-12-05 | 1996-06-26 | Al-Qudaibi, Suliman Ahmed | Pipe assembly |
| CN101344195A (en) * | 2007-07-09 | 2009-01-14 | 天津万联管道工程有限公司 | Glass fibre reinforced plastic concrete reinforced pipe with steel faucet |
| CN103557378A (en) * | 2013-11-13 | 2014-02-05 | 武汉理工大学 | High-stiffness composite tube formed through fixed length winding and manufacturing method thereof |
| CN103615604A (en) * | 2013-12-13 | 2014-03-05 | 欧阳杰 | Glass fiber reinforced plastic and steel composite pipe fitting and manufacturing method of glass fiber reinforced plastic and steel composite pipe fitting |
| CN204328238U (en) * | 2014-12-19 | 2015-05-13 | 沈龙辉 | Glass fibre reinforced plastics concrete composite pipe |
| CN109555909A (en) * | 2019-01-22 | 2019-04-02 | 四川牧雨环保科技有限公司 | Double-walled internal-rib fiberglass sandwich concrete high-strength degree compound pipeline complex pipeline and its processing method |
| CN112555522A (en) * | 2021-01-20 | 2021-03-26 | 四川好运通建材有限公司 | Steel socket composite reinforced concrete lining glass fiber reinforced plastic drain pipe and preparation method thereof |
| CN216009832U (en) * | 2021-10-11 | 2022-03-11 | 阳谷天马建筑材料有限公司 | Municipal administration drainage is with prefabricated composite tube structure |
-
2021
- 2021-10-11 CN CN202111181614.0A patent/CN113898795A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU3988595A (en) * | 1994-12-05 | 1996-06-26 | Al-Qudaibi, Suliman Ahmed | Pipe assembly |
| CN101344195A (en) * | 2007-07-09 | 2009-01-14 | 天津万联管道工程有限公司 | Glass fibre reinforced plastic concrete reinforced pipe with steel faucet |
| CN103557378A (en) * | 2013-11-13 | 2014-02-05 | 武汉理工大学 | High-stiffness composite tube formed through fixed length winding and manufacturing method thereof |
| CN103615604A (en) * | 2013-12-13 | 2014-03-05 | 欧阳杰 | Glass fiber reinforced plastic and steel composite pipe fitting and manufacturing method of glass fiber reinforced plastic and steel composite pipe fitting |
| CN204328238U (en) * | 2014-12-19 | 2015-05-13 | 沈龙辉 | Glass fibre reinforced plastics concrete composite pipe |
| CN109555909A (en) * | 2019-01-22 | 2019-04-02 | 四川牧雨环保科技有限公司 | Double-walled internal-rib fiberglass sandwich concrete high-strength degree compound pipeline complex pipeline and its processing method |
| CN112555522A (en) * | 2021-01-20 | 2021-03-26 | 四川好运通建材有限公司 | Steel socket composite reinforced concrete lining glass fiber reinforced plastic drain pipe and preparation method thereof |
| CN216009832U (en) * | 2021-10-11 | 2022-03-11 | 阳谷天马建筑材料有限公司 | Municipal administration drainage is with prefabricated composite tube structure |
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Application publication date: 20220107 |