CN109531908A - A kind of glass fibre reinforced plastics casing insulating tube production technology - Google Patents
A kind of glass fibre reinforced plastics casing insulating tube production technology Download PDFInfo
- Publication number
- CN109531908A CN109531908A CN201811273102.5A CN201811273102A CN109531908A CN 109531908 A CN109531908 A CN 109531908A CN 201811273102 A CN201811273102 A CN 201811273102A CN 109531908 A CN109531908 A CN 109531908A
- Authority
- CN
- China
- Prior art keywords
- reinforced plastic
- steel pipe
- outer tube
- glass reinforced
- temperature resistant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
- B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
- B29C44/18—Filling preformed cavities
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
-
- 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
- F16L59/00—Thermal insulation in general
- F16L59/02—Shape or form of insulating materials, with or without coverings integral with the insulating materials
- F16L59/028—Composition or method of fixing a thermally insulating material
-
- 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
- F16L59/00—Thermal insulation in general
- F16L59/04—Arrangements using dry fillers, e.g. using slag wool which is added to the object to be insulated by pouring, spreading, spraying or the like
-
- 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
- F16L59/00—Thermal insulation in general
- F16L59/10—Bandages or covers for the protection of the insulation, e.g. against the influence of the environment or against mechanical damage
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Thermal Insulation (AREA)
Abstract
The present invention provides a kind of glass fibre reinforced plastics casing insulating tube production technology, comprising the following steps: (1) gets steel pipe and matched glass reinforced plastic outer tube ready；(2)) rust, soil and the greasy dirt adhered on outer wall of steel pipe is removed using ballasting rust remover；(3) in the outer surface of steel pipe along its circumferential directions T-type supporting block, then steel pipe is penetrated in glass reinforced plastic outer tube using poling machine；(4) end seals of steel pipe use hydraulic control flange arrangement, point operation control in glass reinforced plastic outer tube；(5) spray coating foaming raw material is sprayed to the cavity between steel pipe and glass reinforced plastic outer tube by foaming injection apparatus, forms foam heat-insulation layer；(6) outer wall by inorganic high-temperature resistant heat-insulation sheet material along glass reinforced plastic outer tube wraps up, two sides seam mutually overlaps, form the inorganic high-temperature resistant insulating layer being coated on glass reinforced plastic outer tube, then it is heated so that the moisture in inorganic high-temperature resistant thermal insulation material evaporates, forms the inorganic high-temperature resistant insulating layer of dry state.
Description
Technical field
The present invention relates to insulating tube production technical field more particularly to a kind of glass fibre reinforced plastics casing insulating tube production technologies.
Background technique
Insulating tube is the abbreviation of insulated piping, is mainly used for the conveying of liquid, gas and other media, petroleum, chemical industry,
Space flight, military affairs, central heating, central air-conditioning, municipal pipeline adiabatic heat-insulation engineering in play an important role；Existing guarantor
Temperature pipe is usually that gum cover is arranged in the external of steel pipe, the material of polyurethane is filled in the gap between gum cover and steel pipe, then
By foam filling gap, steel pipe and gum cover bonding are integrally formed, pipe insulating layer is formed；However it is defeated for underground or ground
For sending high-temperature steam or the pipeline of flue gas working medium, the technical requirements of its heat preservation are only difficult to adapt to by polyurethane foaming layer, and
Under the conditions of higher temperature, polyurethane foaming layer is easy Collapse Deformation, influences heat insulation effect, and not being well positioned to meet to use needs
It asks.
Summary of the invention
The present invention exactly against the above technical problems, provides a kind of glass fibre reinforced plastics casing insulating tube production technology.
The present invention to achieve the above object, using following technical scheme: a kind of glass fibre reinforced plastics casing insulating tube production technology,
It is characterized in that, comprising the following steps:
(1) steel pipe and matched glass reinforced plastic outer tube are got ready；
(2) rust, soil and the greasy dirt adhered on outer wall of steel pipe is removed using ballasting rust remover；
(3) in the outer surface of steel pipe along its circumferential directions T-type supporting block, T-type supporting block is used into steel when arrangement
Tape punching is fixed on steel pipe, is then penetrated steel pipe in glass reinforced plastic outer tube using poling machine, and guarantee that the both ends of steel pipe are pre-
Stay certain length of letting the hair grow；
(4) end seals of steel pipe use hydraulic control flange arrangement, point operation control in glass reinforced plastic outer tube；Flange inner hole
Sealed between steel pipe using sealing ring, the aperture surface of flange boss rank and glass reinforced plastic outer tube is in close contact, end face of flange with
Glass reinforced plastic outer tube fits closely；And multiple open-works are drilled on flange, porous plug is housed, porous plug is equipped with multiple in open-work
Gas vent；
(5) it uses isocyanates and polyether polyol for spray coating foaming raw material, and catalyst and foaming tune is added wherein
Agent is saved, is then sprayed by the injection apparatus that foams to the cavity between steel pipe and glass reinforced plastic outer tube, foam is formed and protects
Warm layer；
(6) outer wall by inorganic high-temperature resistant heat-insulation sheet material along glass reinforced plastic outer tube wraps up, two sides seam phase interconnection
It connects, forms the inorganic high-temperature resistant insulating layer being coated on glass reinforced plastic outer tube, then it is heated so that inorganic high-temperature resistant
Moisture evaporation in thermal insulation material, forms the inorganic high-temperature resistant insulating layer of dry state.
The manufacturing process of the inorganic high-temperature resistant heat-insulation sheet material are as follows: be made and fiber glass reinforced plastic cover with the suture of glass fabric four sides
Isometric and equal with fiber glass reinforced plastic cover pipe outside diameter perimeter cloth bag is managed, inorganic high-temperature resistant mud is then uniformly packed into cloth bag,
Then cloth bag is placed between the thick roller of double roller and rolls equal thickness, become inorganic high-temperature resistant heat-insulation sheet material.
The inorganic high-temperature resistant mud is composed of the following components by weight: 100 parts of expanded perlite granules, 5-15 parts of swellings
Soil, 20-50 parts of water.
The diameter of the gas vent is 1.2-2mm.
The foaming control agent is ACR, and ACR passes through distribution by methyl methacrylate, butyl acrylate and styrene
Polymerization is prepared, and wherein the weight ratio of methyl methacrylate, butyl acrylate and styrene is 2:3:1.
It is filled out between steel pipe and glass reinforced plastic outer tube the beneficial effects of the present invention are: production technology provided by the invention can guarantee
The polyurethane foam filled is more uniform, it is ensured that not material leakage avoids generating hole, enhances the thermal insulation property of insulating tube；And glass
The inorganic high-temperature resistant insulating layer wrapped up in glass steel sleeve pipe outer wall is avoided that polyurethane foaming layer collapses at a higher temperature
It collapses deformation, further enhances heat insulation effect.
Specific embodiment
Below with reference to embodiment, the invention will be further described:
A kind of glass fibre reinforced plastics casing insulating tube production technology, which comprises the following steps:
(1) steel pipe and matched glass reinforced plastic outer tube are got ready；
(2) rust, soil and the greasy dirt adhered on outer wall of steel pipe is removed using ballasting rust remover；
(3) in the outer surface of steel pipe along its circumferential directions T-type supporting block, T-type supporting block is used into steel when arrangement
Tape punching is fixed on steel pipe, is then penetrated steel pipe in glass reinforced plastic outer tube using poling machine, and guarantee that the both ends of steel pipe are pre-
Stay certain length of letting the hair grow；
(4) end seals of steel pipe use hydraulic control flange arrangement, point operation control in glass reinforced plastic outer tube；Flange inner hole
Sealed between steel pipe using sealing ring, the aperture surface of flange boss rank and glass reinforced plastic outer tube is in close contact, end face of flange with
Glass reinforced plastic outer tube fits closely；And multiple open-works are drilled on flange, porous plug is housed, porous plug is equipped with multiple in open-work
Gas vent；
(5) it uses isocyanates and polyether polyol for spray coating foaming raw material, and catalyst and foaming tune is added wherein
Agent is saved, is then sprayed by the injection apparatus that foams to the cavity between steel pipe and glass reinforced plastic outer tube, foam is formed and protects
Warm layer；
(6) outer wall by inorganic high-temperature resistant heat-insulation sheet material along glass reinforced plastic outer tube wraps up, two sides seam phase interconnection
It connects, forms the inorganic high-temperature resistant insulating layer being coated on glass reinforced plastic outer tube, then it is heated so that inorganic high-temperature resistant
Moisture evaporation in thermal insulation material, forms the inorganic high-temperature resistant insulating layer of dry state.
The manufacturing process of the inorganic high-temperature resistant heat-insulation sheet material are as follows: be made and fiber glass reinforced plastic cover with the suture of glass fabric four sides
Isometric and equal with fiber glass reinforced plastic cover pipe outside diameter perimeter cloth bag is managed, inorganic high-temperature resistant mud is then uniformly packed into cloth bag,
Then cloth bag is placed between the thick roller of double roller and rolls equal thickness, become inorganic high-temperature resistant heat-insulation sheet material.
The inorganic high-temperature resistant mud is composed of the following components by weight: 100 parts of expanded perlite granules, 5-15 parts of swellings
Soil, 20-50 parts of water.
The diameter of the gas vent is 1.2-2mm.
The foaming control agent is ACR, and ACR passes through distribution by methyl methacrylate, butyl acrylate and styrene
Polymerization is prepared, and wherein the weight ratio of methyl methacrylate, butyl acrylate and styrene is 2:3:1.
A kind of glass fibre reinforced plastics casing insulating tube production technology of embodiment 1, comprising the following steps:
(1) steel pipe and matched glass reinforced plastic outer tube are got ready；
(2) rust, soil and the greasy dirt adhered on outer wall of steel pipe is removed using ballasting rust remover；
(3) in the outer surface of steel pipe along its circumferential directions T-type supporting block, T-type supporting block is used into steel when arrangement
Tape punching is fixed on steel pipe, is then penetrated steel pipe in glass reinforced plastic outer tube using poling machine, and guarantee that the both ends of steel pipe are pre-
Stay certain length of letting the hair grow；
(4) end seals of steel pipe use hydraulic control flange arrangement, point operation control in glass reinforced plastic outer tube；Flange inner hole
Sealed between steel pipe using sealing ring, the aperture surface of flange boss rank and glass reinforced plastic outer tube is in close contact, end face of flange with
Glass reinforced plastic outer tube fits closely；And multiple open-works are drilled on flange, porous plug is housed, porous plug is equipped with multiple in open-work
Gas vent；
(5) it uses isocyanates and polyether polyol for spray coating foaming raw material, and catalyst and foaming tune is added wherein
Agent is saved, is then sprayed by the injection apparatus that foams to the cavity between steel pipe and glass reinforced plastic outer tube, foam is formed and protects
Warm layer；
(6) outer wall by inorganic high-temperature resistant heat-insulation sheet material along glass reinforced plastic outer tube wraps up, two sides seam phase interconnection
It connects, forms the inorganic high-temperature resistant insulating layer being coated on glass reinforced plastic outer tube, then it is heated so that inorganic high-temperature resistant
Moisture evaporation in thermal insulation material, forms the inorganic high-temperature resistant insulating layer of dry state.
The manufacturing process of the inorganic high-temperature resistant heat-insulation sheet material are as follows: be made and fiber glass reinforced plastic cover with the suture of glass fabric four sides
Isometric and equal with fiber glass reinforced plastic cover pipe outside diameter perimeter cloth bag is managed, inorganic high-temperature resistant mud is then uniformly packed into cloth bag,
Then cloth bag is placed between the thick roller of double roller and rolls equal thickness, become inorganic high-temperature resistant heat-insulation sheet material.
The inorganic high-temperature resistant mud is composed of the following components by weight: 100 parts of expanded perlite granules, 5 parts of bentonites,
20 parts of water.
The diameter of the gas vent is 1.2mm.
The foaming control agent is ACR, and ACR passes through distribution by methyl methacrylate, butyl acrylate and styrene
Polymerization is prepared, and wherein the weight ratio of methyl methacrylate, butyl acrylate and styrene is 2:3:1.
A kind of glass fibre reinforced plastics casing insulating tube production technology of embodiment 2, comprising the following steps:
(1) steel pipe and matched glass reinforced plastic outer tube are got ready；
(2) rust, soil and the greasy dirt adhered on outer wall of steel pipe is removed using ballasting rust remover；
(3) in the outer surface of steel pipe along its circumferential directions T-type supporting block, T-type supporting block is used into steel when arrangement
Tape punching is fixed on steel pipe, is then penetrated steel pipe in glass reinforced plastic outer tube using poling machine, and guarantee that the both ends of steel pipe are pre-
Stay certain length of letting the hair grow；
(4) end seals of steel pipe use hydraulic control flange arrangement, point operation control in glass reinforced plastic outer tube；Flange inner hole
Sealed between steel pipe using sealing ring, the aperture surface of flange boss rank and glass reinforced plastic outer tube is in close contact, end face of flange with
Glass reinforced plastic outer tube fits closely；And multiple open-works are drilled on flange, porous plug is housed, porous plug is equipped with multiple in open-work
Gas vent；
(5) it uses isocyanates and polyether polyol for spray coating foaming raw material, and catalyst and foaming tune is added wherein
Agent is saved, is then sprayed by the injection apparatus that foams to the cavity between steel pipe and glass reinforced plastic outer tube, foam is formed and protects
Warm layer；
(6) outer wall by inorganic high-temperature resistant heat-insulation sheet material along glass reinforced plastic outer tube wraps up, two sides seam phase interconnection
It connects, forms the inorganic high-temperature resistant insulating layer being coated on glass reinforced plastic outer tube, then it is heated so that inorganic high-temperature resistant
Moisture evaporation in thermal insulation material, forms the inorganic high-temperature resistant insulating layer of dry state.
The manufacturing process of the inorganic high-temperature resistant heat-insulation sheet material are as follows: be made and fiber glass reinforced plastic cover with the suture of glass fabric four sides
Isometric and equal with fiber glass reinforced plastic cover pipe outside diameter perimeter cloth bag is managed, inorganic high-temperature resistant mud is then uniformly packed into cloth bag,
Then cloth bag is placed between the thick roller of double roller and rolls equal thickness, become inorganic high-temperature resistant heat-insulation sheet material.
The inorganic high-temperature resistant mud is composed of the following components by weight: 100 parts of expanded perlite granules, 15 parts of swellings
Soil, 50 parts of water.
The diameter of the gas vent is 2mm.
The foaming control agent is ACR, and ACR passes through distribution by methyl methacrylate, butyl acrylate and styrene
Polymerization is prepared, and wherein the weight ratio of methyl methacrylate, butyl acrylate and styrene is 2:3:1.
Above example is to the present invention have been described in detail, it is clear that the present invention implements not by the limit of aforesaid way
System as long as using the various improvement that the inventive concept and technical scheme of the present invention carry out, or not improved directly applies to it
Its occasion, it is within the scope of the present invention.
Claims (5)
1. a kind of glass fibre reinforced plastics casing insulating tube production technology, which comprises the following steps:
(1) steel pipe and matched glass reinforced plastic outer tube are got ready；
(2) rust, soil and the greasy dirt adhered on outer wall of steel pipe is removed using ballasting rust remover；
(3) in the outer surface of steel pipe along its circumferential directions T-type supporting block, when arrangement, wears T-type supporting block using steel band
Hole is fixed on steel pipe, is then penetrated steel pipe in glass reinforced plastic outer tube using poling machine, and guarantees the both ends reserved one of steel pipe
Fixed length of letting the hair grow；
(4) end seals of steel pipe use hydraulic control flange arrangement, point operation control in glass reinforced plastic outer tube；Flange inner hole and steel
It is sealed between pipe using sealing ring, the aperture surface of flange boss rank and glass reinforced plastic outer tube is in close contact, end face of flange and glass
Steel sleeve pipe fits closely；And multiple open-works are drilled on flange, porous plug is housed, porous plug is equipped with multiple exhausts in open-work
Hole；
(5) it uses isocyanates and polyether polyol for spray coating foaming raw material, and catalyst and foaming control agent is added wherein,
Then it is sprayed by the injection apparatus that foams to the cavity between steel pipe and glass reinforced plastic outer tube, forms foam heat-insulation layer；
(6) outer wall by inorganic high-temperature resistant heat-insulation sheet material along glass reinforced plastic outer tube wraps up, and two sides seam mutually overlaps, shape
At the high-temperature-resistant thermal-insulation layer being coated on glass reinforced plastic outer tube, then it is heated so that in inorganic high-temperature resistant thermal insulation material
Moisture evaporation, form the inorganic high-temperature resistant insulating layer of dry state.
2. a kind of glass fibre reinforced plastics casing insulating tube production technology according to claim 1, which is characterized in that the inorganic resistance to height
The manufacturing process of warm heat-insulation sheet material are as follows: be made and glass reinforced plastic sleeve is isometric and and glass reinforced plastic sleeve with the suture of glass fabric four sides
The equal cloth bag of outer diameter perimeter, inorganic high-temperature resistant mud is then uniformly packed into cloth bag, cloth bag is then placed on double roller
Equal thickness is rolled between thickness roller, becomes inorganic high-temperature resistant heat-insulation sheet material.
3. a kind of glass fibre reinforced plastics casing insulating tube production technology according to claim 2, which is characterized in that the inorganic resistance to height
Warm mud is composed of the following components by weight: 100 parts of expanded perlite granules, 5-15 parts of bentonites, 20-50 parts of water.
4. a kind of glass fibre reinforced plastics casing insulating tube production technology according to claim 1, which is characterized in that the gas vent
Diameter is 1.2-2mm.
5. a kind of glass fibre reinforced plastics casing insulating tube production technology according to claim 1, which is characterized in that the foaming is adjusted
Agent is ACR, and ACR is prepared by methyl methacrylate, butyl acrylate and styrene by distribution polymerization processes, wherein first
The weight ratio of base methyl acrylate, butyl acrylate and styrene is 2:3:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811273102.5A CN109531908A (en) | 2018-10-30 | 2018-10-30 | A kind of glass fibre reinforced plastics casing insulating tube production technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811273102.5A CN109531908A (en) | 2018-10-30 | 2018-10-30 | A kind of glass fibre reinforced plastics casing insulating tube production technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109531908A true CN109531908A (en) | 2019-03-29 |
Family
ID=65845881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811273102.5A Withdrawn CN109531908A (en) | 2018-10-30 | 2018-10-30 | A kind of glass fibre reinforced plastics casing insulating tube production technology |
Country Status (1)
| Country | Link |
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| CN (1) | CN109531908A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101055049A (en) * | 2007-05-16 | 2007-10-17 | 厦门高特高新材料有限公司 | Prefabricated spiral phenolic aldehyde insulation tube and its production method |
| CN101818835A (en) * | 2010-04-29 | 2010-09-01 | 葫芦岛东方实业有限公司 | High-temperature resistant composite thermal insulating tube and manufacturing method thereof |
| CN102922651A (en) * | 2012-10-04 | 2013-02-13 | 河北昊天管业股份有限公司 | Processing method of anti-shearing and high temperature-resisting composite water-polyurethane heat-insulation pipe |
| US20130299035A1 (en) * | 2012-05-14 | 2013-11-14 | Federal-Mogul Powertrain, Inc. | Thermal Textile Sleeve Having An Outer Robust Metallic Layer And Method Of Enhancing The Robustness Of A Thermal Sleeve Therewith |
| CN104290234A (en) * | 2014-09-12 | 2015-01-21 | 北京豪特耐管道设备有限公司 | Production method of heat insulation pipeline |
| CN107448691A (en) * | 2017-07-18 | 2017-12-08 | 河南三杰热电科技股份有限公司 | One kind is aerial to use polyurethane foam prefabricated thermal insulation pipeline and production method |
-
2018
- 2018-10-30 CN CN201811273102.5A patent/CN109531908A/en not_active Withdrawn
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101055049A (en) * | 2007-05-16 | 2007-10-17 | 厦门高特高新材料有限公司 | Prefabricated spiral phenolic aldehyde insulation tube and its production method |
| CN101818835A (en) * | 2010-04-29 | 2010-09-01 | 葫芦岛东方实业有限公司 | High-temperature resistant composite thermal insulating tube and manufacturing method thereof |
| US20130299035A1 (en) * | 2012-05-14 | 2013-11-14 | Federal-Mogul Powertrain, Inc. | Thermal Textile Sleeve Having An Outer Robust Metallic Layer And Method Of Enhancing The Robustness Of A Thermal Sleeve Therewith |
| CN102922651A (en) * | 2012-10-04 | 2013-02-13 | 河北昊天管业股份有限公司 | Processing method of anti-shearing and high temperature-resisting composite water-polyurethane heat-insulation pipe |
| CN104290234A (en) * | 2014-09-12 | 2015-01-21 | 北京豪特耐管道设备有限公司 | Production method of heat insulation pipeline |
| CN107448691A (en) * | 2017-07-18 | 2017-12-08 | 河南三杰热电科技股份有限公司 | One kind is aerial to use polyurethane foam prefabricated thermal insulation pipeline and production method |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information |
Address after: 301800 Baodi District, East Industrial Zone (Tianjin (Tianjin) thermal energy equipment development Co., Ltd.) Applicant after: CIC (Tianjin) Intelligent Pipeline Co., Ltd. Address before: 301800 Baodi District, East Industrial Zone (Tianjin (Tianjin) thermal energy equipment development Co., Ltd.) Applicant before: CIC (Tianjin) Thermal Power Co., Ltd. |
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| CB02 | Change of applicant information | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190329 |
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| WW01 | Invention patent application withdrawn after publication |