CN104309057B - Lining molding process for plastic lining composite steel pipe flange seal end face - Google Patents
Lining molding process for plastic lining composite steel pipe flange seal end face Download PDFInfo
- Publication number
- CN104309057B CN104309057B CN201410409844.1A CN201410409844A CN104309057B CN 104309057 B CN104309057 B CN 104309057B CN 201410409844 A CN201410409844 A CN 201410409844A CN 104309057 B CN104309057 B CN 104309057B
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- Prior art keywords
- steel pipe
- lining
- plastic
- plastic lining
- composite steel
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- 229920003023 plastic Polymers 0.000 title claims abstract description 158
- 239000004033 plastic Substances 0.000 title claims abstract description 158
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 99
- 239000010959 steel Substances 0.000 title claims abstract description 99
- 239000002131 composite material Substances 0.000 title claims abstract description 70
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000000465 moulding Methods 0.000 title claims abstract description 21
- 238000002347 injection Methods 0.000 claims abstract description 48
- 239000007924 injection Substances 0.000 claims abstract description 48
- 230000005674 electromagnetic induction Effects 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 11
- 238000001746 injection moulding Methods 0.000 claims description 10
- 238000003466 welding Methods 0.000 claims description 3
- 230000006698 induction Effects 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims 1
- 150000001875 compounds Chemical class 0.000 abstract description 12
- 239000000463 material Substances 0.000 abstract description 12
- 238000005516 engineering process Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000010030 laminating Methods 0.000 abstract 1
- 238000002844 melting Methods 0.000 abstract 1
- 230000008018 melting Effects 0.000 abstract 1
- 238000007789 sealing Methods 0.000 description 8
- 238000005260 corrosion Methods 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 241000233855 Orchidaceae Species 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003405 preventing effect Effects 0.000 description 1
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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14598—Coating tubular articles
- B29C45/14622—Lining the inner or outer surface of tubular articles
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/1418—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles the inserts being deformed or preformed, e.g. by the injection pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
- B29L2023/22—Tubes or pipes, i.e. rigid
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a kind of lining molding process for plastic lining composite steel pipe flange seal end face, belong to lining plastic compound steel design and manufacturing technology field.There is provided a kind of covering on adpting flange seal face to be moulded layer and be connected as a single entity with the plastic lining layer in plastic lining composite steel pipe, the lining molding process for plastic lining composite steel pipe flange seal end face that the lining plastic bed of material of plastic lining composite steel pipe is the most bonding with steel pipe inner wall realization can be made again simultaneously.Described lining molding process utilizes heater and injection mold that the high temperature plastics of melting is noted seal face and the inner side of lining plastic compound steel tube end being layed onto described adpting flange, it is connected as an entirety with original inner side plastic lining layer, and the most laminating seal face at described adpting flange and the inner side of lining plastic compound steel tube end.
Description
Technical field
The present invention relates to a kind of lining molding process, especially relate to a kind of lining molding process for plastic lining composite steel pipe flange seal end face,
Belong to plastic lining composite steel pipe design and manufacturing technology field.
Background technology
In prior art, plastic lining composite steel pipe flange face covers the production technology moulded mainly " the direct flange of flange face covers and moulds ", " method
Plastic hoop is pasted in blue face " and " flange face installation plastic bushing ".The direct flange of flange face covers the basic skills moulded: will process
Inner lining plastic tube penetrate in the steel pipe that two ends weld ring flange, then by liner end of plastic tube heat flange so that it is cover
Cover on flange sealing surface.Owing to the lining plastic bed of material of this plastic lining composite steel pipe does not carry out bonding with steel pipe inner wall, moulded by lining
, easily there is plastic layer contraction distortion problem, causes lining to be moulded in bi-material difference of linear expansion large effect inside and outside composite steel tube
Composite steel tube loses anti-corrosion function.Flange face pastes the basic skills of plastic hoop: process with injection molding manner that can be attached to flange close
Plastic hoop on front cover, coats PUR on manufactured plastic lining composite steel pipe flange sealing surface, plastic hoop is placed on method
On blue sealing surface, pressurizeed by heating, the flange sealing surface of plastic lining composite steel pipe is pasted plastic hoop.This method produces
The flange face gone out covers to be moulded layer and the plastic lining composite steel pipe lining plastic bed of material and fails to connect into an entirety, and in pipeline, the medium of conveying easily leads to
Cross the lining plastic bed of material and flange face cover the crevice corrosion flange sealing surface moulded between layer, also easily cause pipe end plastic layer layering,
Shrinkage phenomenon.Flange face installs the basic skills of plastic bushing: manufactured plastic lining composite steel pipe two-port is divested one section
The lining plastic bed of material, exposes steel pipe base tube, and then the base tube port at plastic lining composite steel pipe welds ring flange, finally will be molded in advance
The plastic bushing processed is bonded on base tube port inner wall and the flange sealing surface of plastic lining composite steel pipe.This method is produced
Flange face covers to be moulded layer and the plastic lining composite steel pipe lining plastic bed of material and the most not to can be connected to an entirety, and in pipeline, the medium of conveying easily leads to
Cross the crevice corrosion pipeline between plastic bushing and plastic lining composite steel pipe base tube and flange sealing surface.
In the prior art, there is no to be covered by flange sealing surface and mould layer and be connected as a single entity, simultaneously with plastic lining composite steel pipe lining plastic layer
The lining plastic bed of material that can make again plastic lining composite steel pipe achieves the production method of the plastic lining composite steel pipe of reliable bond with steel pipe inner wall.
Summary of the invention
The technical problem to be solved is: provide a kind of layer of can covering on adpting flange seal face being moulded to mould multiple with lining
The plastic lining layer closed in steel pipe is connected as a single entity, and the lining plastic bed of material of plastic lining composite steel pipe and steel pipe inner wall can be made again to achieve reliably simultaneously
The lining molding process for plastic lining composite steel pipe flange seal end face connected.
Be the technical scheme is that a kind of lining for plastic lining composite steel pipe flange seal end face is moulded by solving above-mentioned technical problem
Method, comprises the following steps,
A, processing, be welded to connect flange and prepare heater and injection mold, processing is fitted mutually with described lining plastic compound steel tube end
The adpting flange joined, and the connection method described in the end welding of the described plastic lining composite steel pipe after having divested one section of inner side plastic lining layer
Orchid, prepares the injection mold containing core rod and the flange heater with load coil the most respectively, and makes described
The external diameter of core rod is suitable with the internal diameter of described plastic lining composite steel pipe,
B, heating adpting flange and the end of plastic lining composite steel pipe having divested one section of inner side plastic lining layer being connected with this adpting flange
Portion, is inserted in described adpting flange in described load coil, then the method with load coil described in startup
Blue heater, to described adpting flange and the plastic lining composite steel pipe having divested inner side plastic lining layer that is connected with this adpting flange
End heat,
C, injection, treat described adpting flange and be connected with this adpting flange, and the lining having divested one section of inner side plastic lining layer is moulded multiple
Closing the end of steel pipe, after being heated to the temperature needed for injection-moulding plastic, the flange heater described in dismounting, by step a system
The core rod of standby injection mold inserts the end of described plastic lining composite steel pipe, makes described core rod mould compound with adpting flange, described lining
Base steel pipe and the end face of inner side plastic lining layer outside steel pipe constitute injection cavity volume, then, by outside injection-moulding device at described note
In described injection cavity volume, inject melted high temperature plastics under the cooperation of mould, and make described high temperature plastics mould with inner side lining
The end face of layer fuses together, and the most i.e. forms on adpting flange seal face and divested the base steel pipe of inner side plastic lining layer
Plastic lining layer on madial wall.
Further, in step a, when divesting one section of inner side plastic lining layer of described plastic lining composite steel pipe tip inside, simultaneously
Inside this, groove is prepared in the end of plastic lining layer.
Further, described flange heater also includes that electromagnetic induction device, described load coil are with described
The electromagnetic induction coil of electromagnetic induction device connection, described adpting flange is by sensing the electromagnetism that described electromagnetic induction device drives
The energy of induction coil heats.
Further, described injection mold also includes fixed mechanism and is provided with the die body of inlet, outside described core rod
Being provided with the injection channel chamber connected with described injection cavity volume on side, described die body is crimped on the outside of described core rod, and with
Described injection channel chamber constitutes injection channel, and described inlet connects with described injection channel, and described injection mold leads to
Cross described fixed mechanism to be fixed on the adpting flange of described lining plastic compound steel tube end.
Further, in step a, when the adpting flange described in processing, simultaneously on the seal face of described adpting flange
Processing anticreep groove, the plastic lining layer being layed onto on described adpting flange seal face by step b, step c note fills up described simultaneously
Anticreep groove.
Further, the interior big the least outer dovetail groove of described anticreep groove being projected as in its cross section.
The invention has the beneficial effects as follows: use described lining molding process cover lining to described adpting flange seal face and lining plastic compound steel
Plastic lining layer inside pipe, owing to being to be formed with heating injection molding manner, and has also divested the lining of one section of inner side before heating injection
Mould layer, the most not only covering on described adpting flange seal face moulded layer and be connected as a single entity with the plastic lining layer in plastic lining composite steel pipe,
The lining plastic bed of material of plastic lining composite steel pipe and steel pipe inner wall can also be made simultaneously to realize being reliably connected, thus avoid lining plastic compound steel
Pipe in use, is moulded layer plastic lining layer inside plastic lining composite steel pipe because of covering on adpting flange seal face and is combined imprecision
And the corrosion to adpting flange caused, also avoid the layering of lining plastic compound steel pipe port plastic layer, the generation of shrinkage phenomenon simultaneously.
Accompanying drawing explanation
Fig. 1 is the present invention signal serving as a contrast the heating adpting flange that molding process relates to for plastic lining composite steel pipe flange seal end face
Figure；
Fig. 2 is the present invention signal serving as a contrast the hot injection moulding process that molding process relates to for plastic lining composite steel pipe flange seal end face
Figure.
Figure is labeled as: plastic lining composite steel pipe 1, adpting flange 2, inner side plastic lining layer 3, core rod 4, injection mold 5, sensing
Heating coil 6, flange heater 7, injection cavity volume 8, groove 9, electromagnetic induction device 10, fixed mechanism 11, inlet
12, die body 13, injection channel chamber 14, injection channel 15, anticreep groove 16.
Detailed description of the invention
Be that the present invention provides as shown in Figure 1 and Figure 2 a kind of can mould layer by covering on adpting flange seal face and mould compound with lining
Plastic lining layer in steel pipe is connected as a single entity, and the lining plastic bed of material of plastic lining composite steel pipe can be made again to achieve with steel pipe inner wall simultaneously and reliably connect
The lining molding process for plastic lining composite steel pipe flange seal end face connect.Described lining molding process comprises the following steps,
A, process, be welded to connect flange and prepare heater and injection mold, processing and described plastic lining composite steel pipe 1 end phase
Adaptive adpting flange 2, and the end welding of the described plastic lining composite steel pipe 1 after having divested one section of inner side plastic lining layer 3 is described
Adpting flange 2, prepare the injection mold 5 containing core rod 4 the most respectively and the flange with load coil 6 add
Thermal 7, and make the external diameter of described core rod 4 suitable with the internal diameter of described plastic lining composite steel pipe 1,
B, heating adpting flange 2 and the plastic lining composite steel pipe having divested one section of inner side plastic lining layer 3 being connected with this adpting flange 2
The end of 1, is inserted in described adpting flange 2 in described load coil 6, then adding with sensing described in startup
The flange heater 7 of heat coil 6, to described adpting flange 2 and be connected with this adpting flange 2 divested inner side lining
The end of the plastic lining composite steel pipe 1 moulding layer 3 is heated,
C, injection, treat described adpting flange 2 and be connected with this adpting flange 2, has divested one section of inner side plastic lining layer 3
The end of plastic lining composite steel pipe 1, after being heated to the temperature needed for injection-moulding plastic, the flange heater 7 described in dismounting,
The core rod 4 of the injection mold 5 step a prepared inserts the end of described plastic lining composite steel pipe 1, makes described core rod 4 and is connected
Base steel pipe and the end face of inner side plastic lining layer 3 outside flange 2, described plastic lining composite steel pipe 1 constitute injection cavity volume 8, then, logical
Cross outside injection-moulding device and in described injection cavity volume 8, inject melted high temperature plastics under the cooperation of described injection mold 5,
And make described high temperature plastics fuse together with the end face of inner side plastic lining layer 3, the most i.e. form adpting flange 2 sealed end
On face and divested inner side plastic lining layer 3 base steel pipe madial wall on plastic lining layer.
Use described lining molding process cover lining to the plastic lining layer inside described adpting flange seal face and plastic lining composite steel pipe, due to
It is to be formed with heating injection molding manner, and before heating injection, has also divested the plastic lining layer of one section of inner side, the most not only by described
Covering on adpting flange seal face is moulded layer and is connected as a single entity with the plastic lining layer in plastic lining composite steel pipe, can also make lining plastic compound steel simultaneously
The lining plastic bed of material of pipe is reliably connected with steel pipe inner wall realization, thus avoids plastic lining composite steel pipe in use, because of even
Covering on acting flange seal face mould layer plastic lining layer inside plastic lining composite steel pipe be combined imprecision and cause to adpting flange
Corrosion, also avoid the layering of lining plastic compound steel pipe port plastic layer, the generation of shrinkage phenomenon simultaneously.
In above-mentioned embodiment, mould effect to improve to cover, facilitate again the whole operation covering the process of moulding simultaneously, improve operability,
In step a, when divesting one section of inner side plastic lining layer 3 of described plastic lining composite steel pipe 1 tip inside, serve as a contrast inside this simultaneously and mould
Groove 9 is prepared in the end of layer 3；Described flange heater 7 also includes electromagnetic induction device 10, described sensing heating
Coil 6 is the electromagnetic induction coil connected with described electromagnetic induction device 10, and described adpting flange 2 is by sensing described electromagnetism
The energy of the electromagnetic induction coil that sensing apparatus 10 drives heats；Described injection mold 5 also includes fixed mechanism 11 He
It is provided with the die body 13 of inlet 12, the lateral surface of described core rod 4 is provided with the injection connected with described injection cavity volume 8
Channel lumens 14, described die body 13 is crimped on the outside of described core rod 4, and logical with described injection channel chamber 14 composition injection
Road 15, described inlet 12 connects with described injection channel 15, and described injection mold 5 is by described fixed mechanism
On 11 adpting flanges being fixed on described plastic lining composite steel pipe 1 end.So, just it is easy to make the inner side of plastic lining composite steel pipe 1
Plastic lining layer 3 merges with the plastic lining layer of end, improves leak preventing effect.
And see effect to improve covering of plastic lining layer on adpting flange 2, avoid coming off in use to greatest extent, step
In rapid a, when the adpting flange 2 described in processing, on the seal face of described adpting flange 2, process anticreep groove 16 simultaneously,
The plastic lining layer being layed onto on described adpting flange 2 seal face by step b, step c note fills up described anticreep groove 16 simultaneously；
And anticreep groove 16 be preferably in its cross section be projected as interior big the least outer dovetail groove.
Claims (5)
1. the lining molding process for plastic lining composite steel pipe flange seal end face, it is characterised in that: comprise the following steps,
A, processing, be welded to connect flange and prepare heater and injection mold, processing is held with described plastic lining composite steel pipe (1)
The adpting flange (2) that portion is suitable, and the described plastic lining composite steel pipe (1) after having divested one section of inner side plastic lining layer (3)
Adpting flange (2) described in the welding of end, prepares the injection mold (5) containing core rod (4) and band thoughts the most respectively
The flange heater (7) of coil (6) should be heated, and make external diameter and the described plastic lining composite steel pipe (1) of described core rod (4)
Internal diameter suitable,
B, heating adpting flange (2) and the lining having divested one section of inner side plastic lining layer (3) being connected with this adpting flange (2)
The end of plastic composite steel pipe (1), is inserted in described adpting flange (2) in described load coil (6), then opens
The dynamic described flange heater (7) with load coil (6), connects to described adpting flange (2) and with this
The end of the plastic lining composite steel pipe (1) of what acting flange (2) connected divested inner side plastic lining layer (3) is heated,
C, injection, treat described adpting flange (2) and be connected with this adpting flange (2), has divested one section of inner side lining
Mould the end of the plastic lining composite steel pipe (1) of layer (3), the method after being heated to the temperature needed for injection-moulding plastic, described in dismounting
Blue heater (7), the core rod (4) of injection mold step a prepared (5) inserts described plastic lining composite steel pipe (1)
End, makes described core rod (4) mould with adpting flange (2), the base steel pipe in described plastic lining composite steel pipe (1) outside and inner side lining
The end face of layer (3) constitutes injection cavity volume (8), then, by the cooperation in described injection mold (5) of the outside injection-moulding device
The lower high temperature plastics melted that injects in described injection cavity volume (8), and make described high temperature plastics and inner side plastic lining layer (3)
End face fuse together, the most i.e. formed on adpting flange (2) seal face and divested inner side plastic lining layer (3)
Base steel pipe madial wall on plastic lining layer,
In step a, when divesting one section of plastic lining layer (3), inner side of described plastic lining composite steel pipe (1) tip inside, exist simultaneously
Inside this, groove (9) is prepared in the end of plastic lining layer (3).
Lining molding process for plastic lining composite steel pipe flange seal end face the most according to claim 1, it is characterised in that:
Described flange heater (7) also includes that electromagnetic induction device (10), described load coil (6) are and described electricity
The electromagnetic induction coil that magnetic induction equipment (10) connects, described adpting flange (2) is by sensing described electromagnetic induction device (10)
The energy of the electromagnetic induction coil driven heats.
Lining molding process for plastic lining composite steel pipe flange seal end face the most according to claim 1, it is characterised in that:
Described injection mold (5) also includes fixed mechanism (11) and is provided with the die body (13) of inlet (12), at described mould
The injection channel chamber (14) connected with described injection cavity volume (8), described die body (13) it is provided with on the lateral surface of core (4)
It is crimped on the outside of described core rod (4), and constitutes injection channel (15), described note with described injection channel chamber (14)
Entrance (12) connects with described injection channel (15), and described injection mold (5) is by described fixed mechanism (11)
It is fixed on the adpting flange (2) of described plastic lining composite steel pipe (1) end.
4. according to the lining molding process for plastic lining composite steel pipe flange seal end face according to any one of claims 1 to 3, its
It is characterised by: in step a, when adpting flange (2) described in processing, the sealed end in described adpting flange (2) simultaneously
Process anticreep groove (16) on face, be layed onto the plastic lining layer on described adpting flange (2) seal face by step b, step c note
Fill up described anticreep groove (16) simultaneously.
Lining molding process for plastic lining composite steel pipe flange seal end face the most according to claim 4, it is characterised in that:
The interior big the least outer dovetail groove of described anticreep groove (16) being projected as in its cross section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410409844.1A CN104309057B (en) | 2014-08-19 | 2014-08-19 | Lining molding process for plastic lining composite steel pipe flange seal end face |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410409844.1A CN104309057B (en) | 2014-08-19 | 2014-08-19 | Lining molding process for plastic lining composite steel pipe flange seal end face |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104309057A CN104309057A (en) | 2015-01-28 |
| CN104309057B true CN104309057B (en) | 2016-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410409844.1A Active CN104309057B (en) | 2014-08-19 | 2014-08-19 | Lining molding process for plastic lining composite steel pipe flange seal end face |
Country Status (1)
| Country | Link |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1321844A (en) * | 2000-04-29 | 2001-11-14 | 季晓林 | Forming process of plastic sealing surface of steel-plastic composite piper coupling flange |
| CN102434736A (en) * | 2011-09-16 | 2012-05-02 | 平顶山捷利德增强塑料有限公司(中外合资) | Process for carrying out injection molding on flanges of pipe fitting on steel-plastic compound pipe |
| CN102720906A (en) * | 2012-06-26 | 2012-10-10 | 成都贝根管道有限责任公司 | Plastic-filling construction method and tooling for broken pipe ends welded with flanges on lining-plastic composite steel pipe |
| DE102012018788A1 (en) * | 2012-09-22 | 2013-03-21 | Daimler Ag | Method for manufacturing composite component e.g. front end carrier of motor car, involves injecting plastic element into area at peripheral surface of pipe, where pipe is protected by supporting pressure during injection |
| CN203718191U (en) * | 2014-01-16 | 2014-07-16 | 成都贝根管道有限责任公司 | Connection structure for inner and outer lining plastic composite steel pipes |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09187840A (en) * | 1995-11-06 | 1997-07-22 | Sekisui Chem Co Ltd | Manufacture of flanged resin lining steel pipe |
-
2014
- 2014-08-19 CN CN201410409844.1A patent/CN104309057B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1321844A (en) * | 2000-04-29 | 2001-11-14 | 季晓林 | Forming process of plastic sealing surface of steel-plastic composite piper coupling flange |
| CN102434736A (en) * | 2011-09-16 | 2012-05-02 | 平顶山捷利德增强塑料有限公司(中外合资) | Process for carrying out injection molding on flanges of pipe fitting on steel-plastic compound pipe |
| CN102720906A (en) * | 2012-06-26 | 2012-10-10 | 成都贝根管道有限责任公司 | Plastic-filling construction method and tooling for broken pipe ends welded with flanges on lining-plastic composite steel pipe |
| DE102012018788A1 (en) * | 2012-09-22 | 2013-03-21 | Daimler Ag | Method for manufacturing composite component e.g. front end carrier of motor car, involves injecting plastic element into area at peripheral surface of pipe, where pipe is protected by supporting pressure during injection |
| CN203718191U (en) * | 2014-01-16 | 2014-07-16 | 成都贝根管道有限责任公司 | Connection structure for inner and outer lining plastic composite steel pipes |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104309057A (en) | 2015-01-28 |
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Effective date of registration: 20170705 Address after: Jinyuan Industrial Avenue, Dayi County town of 611330 in Sichuan province Chengdu City 2 No. 1 Patentee after: CHENGDU BEIGEN PIPELINE TECHNOLOGY CO.,LTD. Address before: Jinyuan Industrial Avenue, Dayi County town of 611330 Sichuan city of Chengdu Province, two Patentee before: CHENGDU BEGIN PIPELINE CO.,LTD. |
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Address after: 611330 No. 1, Section 2, Industrial Avenue, Jinyuan Town, Dayi County, Chengdu City, Sichuan Province Patentee after: Chengdu Common Steel and Plastic Products Co.,Ltd. Address before: 611330 No. 1, Section 2, Industrial Avenue, Jinyuan Town, Dayi County, Chengdu City, Sichuan Province Patentee before: CHENGDU BEIGEN PIPELINE TECHNOLOGY CO.,LTD. |
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Effective date of registration: 20230524 Address after: No. 139, Xiangyang Road, Qingbaijiang District, Chengdu, Sichuan 610300 Patentee after: Chengdu joint pipe manufacturing Co.,Ltd. Address before: 611330 No. 1, Section 2, Industrial Avenue, Jinyuan Town, Dayi County, Chengdu City, Sichuan Province Patentee before: Chengdu Common Steel and Plastic Products Co.,Ltd. |
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Effective date of registration: 20240422 Address after: No. 1-2, Section 1, Xueshan Avenue, Qingxia Street, Dayi County, Chengdu City, Sichuan Province, 610000 Patentee after: Chengdu Beixing Pipe Industry Co.,Ltd. Country or region after: China Address before: No. 139, Xiangyang Road, Qingbaijiang District, Chengdu, Sichuan 610300 Patentee before: Chengdu joint pipe manufacturing Co.,Ltd. Country or region before: China |
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