CN105972335A - Plastic-lined flange pipe and manufacturing process - Google Patents
Plastic-lined flange pipe and manufacturing process Download PDFInfo
- Publication number
- CN105972335A CN105972335A CN201610379705.8A CN201610379705A CN105972335A CN 105972335 A CN105972335 A CN 105972335A CN 201610379705 A CN201610379705 A CN 201610379705A CN 105972335 A CN105972335 A CN 105972335A
- Authority
- CN
- China
- Prior art keywords
- pipe
- steel pipe
- lining
- plastic tube
- plastic
- 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.)
- Pending
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Classifications
-
- 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
- F16L9/147—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups comprising only layers of metal and plastics with or without reinforcement
-
- 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
- B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
- B29C63/26—Lining or sheathing of internal surfaces
- B29C63/34—Lining or sheathing of internal surfaces using tubular layers or sheathings
- B29C63/345—Lining or sheathing of internal surfaces using tubular layers or sheathings whilst rotating the article
-
- 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
- F16L23/00—Flanged joints
- F16L23/02—Flanged joints the flanges being connected by members tensioned axially
Abstract
The invention discloses a plastic-lined flange pipe. The plastic-lined flange pipe comprises a steel pipe, a plastic pipe and two flanges, wherein two end surfaces are correspondingly formed at two ends of the steel pipe; the two flanges correspondingly sleeve the two ends of the steel pipe, and the end surfaces of the steel pipe are correspondingly positioned at the inner sides of the flanges; each flange is fixed to the steel pipe through an inner weld seam and an outer weld seam; each outer weld seam is connected to the outer side surface of the steel pipe and the end surface of one end of the corresponding flange; each inner weld seam is connected to the end surface of the steel pipe and the inner side surface of the corresponding flange; bolt holes of the two flanges are arranged and corresponding to each other; the outer side of the plastic pipe is fixed to the inner side of the steel pipe through hot melt adhesive; circular arc surfaces are formed at two ends of the plastic pipe and gradually extend toward the outer side from one end, close to the middle part of the plastic pipe, to one end, far away from the middle part of the plastic pipe; the circular arc surfaces are attached on the outer sides of the inner weld seams. The invention also discloses a manufacturing process of the plastic-lined flange pipe. With the adoption of the plastic-lined flange pipe and the manufacturing process, the problem that the plastic pipe is broken during the welding of the flanges can be solved, and the quality problems of poor adhering and unsmooth abutting due to repair can be avoided.
Description
Technical field
The present invention relates to a kind of lining and mould flanged pipe and manufacturing process.
Background technology
Plastic lining composite steel pipe be play in drinking water, water-supply pipeline facility at present extremely important
Effect, steel tube connecting way has threaded, and groove connects, Flange joint, the side such as welding
Formula.But whether use what connected mode, all can not destroy lining plastic layer, otherwise, just rise not
To etch-proof effect.
When a lot of manufacturer production linings mould flanged pipe, because being limited by equipment, such as electricity consumption magnetic strength
The lining that should heat technique making moulds flanged pipe, and because being limited by heating collar, flange can not be crossed and add
Gas ket, can only first carry out line plastic-steel tube, then welded flange, during welding because of high temperature port very
Long one section of plastic lining layer destroys, then removes to repair and destroyed mould layer, wastes time and energy, and quality obtains
Ensureing less than effective, this is that lining moulds flanged pipe production a great problem.And, at welded flange
Time, inside weld can be left between the medial surface and the end face of steel pipe of flange, if inside weld exposes
Outside plastic tube, then inside weld can be made to contact with water, easily corrode thus cause flange and steel
The connection of pipe is built on the sand.
Summary of the invention
In order to overcome the deficiencies in the prior art, an object of the present invention is to provide a kind of lining to mould
Flanged pipe, for solving the problem that inside weld exposes.
An object of the present invention realizes by the following technical solutions:
A kind of lining moulds flanged pipe, including:
Steel pipe, the two ends of this steel pipe form two end faces respectively；
Two flanges, are set in the two ends of steel pipe, and the end face of this steel pipe is positioned at this method
Blue inner side, each flange all fixes with steel pipe by inside weld and outside weld, outside weld connection
The lateral surface of steel pipe and the end face of flange one end, the end face of inside weld joint steel pipe and flange interior
Side, the bolt hole one_to_one corresponding of these two flanges arranges, and is correspondingly arranged on two flanges
The centrage of two bolts hole be located along the same line；
The plastic tube being coaxially disposed with steel pipe, steel pipe is fixed on by PUR in the outside of plastic tube
Inner side, the two ends of plastic tube are respectively formed arc surface, and this arc surface is from the middle part of the plastic tube
One end is to extending the most laterally away from the one end in the middle part of plastic tube, and this arc surface is sticked in interior weldering
The outside of seam.
Preferably, this steel pipe is coating steel pipe.
The two of the purpose of the present invention are the manufacturing process providing a kind of lining to mould flanged pipe, are used for solving
The problem that certainly during welded flange, plastic tube is destroyed.
The two of the purpose of the present invention realize by the following technical solutions:
Lining moulds the manufacturing process of flanged pipe, including:
Be set with two flanges at the two ends of steel pipe, the two ends of this steel pipe form two ends respectively
Face, and two flanges are fixed with steel-pipe welding；
PUR is set outside plastic tube, and utilizes bench to be drawn in steel pipe by plastic tube
Side, two of plastic tube is positioned at the outside of steel pipe；
Outside at plastic tube two is set with two adapter sleeves respectively, and adapter sleeve is connected to flange
On end face；
Inner side at plastic tube two is installed two and is sealed conehead respectively, and plastic pipe clip is located at connection
Overlapping and seal between conehead, one of them seals to offer on conehead and connects with inside of plastic tubes
Air inlet；
It is inside of plastic tubes injecting compressed air by this air inlet, and pressurize；
This lining being provided with sealing conehead and adapter sleeve is moulded flanged pipe and is positioned over heating furnace heating,
Make hotmelt melts, and utilize a drive mechanism to drive lining to mould flanged pipe rotation；
Lining is moulded flanged pipe take out heating furnace and lining is moulded flanged pipe cooling, make PUR solidify；
Take off adapter sleeve and seal conehead, the port of finishing plastic tube.
Preferably, the end face of this steel pipe is positioned at the inner side of this flange, at the end face of steel pipe during welding
And between the medial surface of flange, form inside weld, after PUR solidifies, two of plastic tube is equal
Be sticked outside inside weld and form arc surface, this arc surface from the one end in the middle part of the plastic tube to
Extend the most laterally away from the one end in the middle part of plastic tube.
Preferably, between the lateral surface and the end face of flange one end of steel pipe, outside weld is formed when welding
Seam.
Preferably, smooth to carrying out reconditioning at inside weld and outside weld after welding, then in steel pipe
Wall carries out blasting treatment.
Preferably, after set installs adapter sleeve, reserve the plastics of 10mm in the outside of adapter sleeve
Pipe, remaining saw removes.
Preferably, drive mechanism includes support body, two tumblers and power set, two rotations
Part is articulated on support body by rotating shaft, and power set are arranged on support body and for driving rotating shaft to turn
Dynamic, lining is moulded two sealing coneheads of flanged pipe and is fixed on two tumblers.
Preferably, after lining is moulded flanged pipe taking-up heating furnace, first it is pressurized to 0.8MPa, protects
Pressure a period of time, make plastic tube expand and be attached to steel pipe inner wall, then lining is moulded flanged pipe lower the temperature.
Preferably, utilize the mode of Water spray that lining is moulded flanged pipe and lower the temperature, make plastic tube cold
But to less than 60 DEG C.
Compared to existing technology, the beneficial effects of the present invention is: the lining of the present invention moulds flanged pipe
The two ends of plastic tube are respectively formed arc surface, and this arc surface is sticked in the outside of inside weld, so may be used
To block inside weld, it is to avoid inside weld contacts with water, prevent inside weld from corroding, and this circular arc
Face is prolonged to away from the one end in the middle part of plastic tube the most laterally from the one end in the middle part of plastic tube
Stretch, so, the arc surface for guiding can be formed again at the two ends of plastic tube, it is simple to it
He connects by pipeline.The manufacturing process that the lining of the present invention moulds flanged pipe is first solid in the welding of the outside of steel pipe
Fixed two flanges, outside is provided with the plastic tube of PUR and draws in steel pipe by recycling bench
Side, is inside of plastic tubes injecting compressed air by this air inlet, is made plastic tube outwards support and steel
The inner side of pipe is adjacent to, and utilizes a drive mechanism to drive lining to mould flanged pipe and rotate in heating furnace, from
And make PUR and steel pipe and plastic tube be fully contacted, then, lining is moulded flanged pipe and takes out heating
Lining is also moulded flanged pipe cooling by stove, makes PUR solidify, just secures plastic tube and steel pipe, connect
, then the port of plastic tube repaired, such mode of heating can first welded flange,
Fixed plastics pipe again, it is to avoid damage plastic tube when welded flange, eliminates plastics
The reparing process of pipe, improves work efficiency.
Accompanying drawing explanation
Fig. 1 is that the present invention serves as a contrast the fabricating tools schematic diagram moulding flanged pipe during fabrication；
Fig. 2 is that the present invention serves as a contrast the structural representation moulding flanged pipe after completing；
In figure: 1, flange；2, adapter sleeve；3, conehead is sealed；31, passage；4, interior
Weld seam；5, outside weld；6, steel pipe；7, plastic tube；71, arc surface.
Detailed description of the invention
Below, in conjunction with accompanying drawing and detailed description of the invention, the present invention is described further:
As it is shown in figure 1, the lining of the present invention moulds flanged pipe includes steel pipe 6, plastic tube 7 and two
Flange 1.The two ends of this steel pipe 6 form two end faces respectively；Two flanges 1 are set in
The two ends of steel pipe 6, and the end face of this steel pipe 6 is positioned at the inner side of this flange 1, each flange
1 is all fixed with steel pipe 6 by inside weld 4 and outside weld 5, outside weld 5 joint steel pipe 6
Lateral surface and the end face of flange 1 one end, the end face of inside weld 4 joint steel pipe 6 and flange 1
Medial surface, the bolt hole one_to_one corresponding of these two flanges 1 is arranged, and right on two flanges 1
The centrage of two bolts hole that should arrange is located along the same line；Plastic tube 7 is same with steel pipe 6
Axle is arranged, and the inner side of steel pipe 6, plastic tube 7 are fixed on by PUR in the outside of plastic tube 7
Two ends be respectively formed arc surface 71, this arc surface 71 from the one end in the middle part of the plastic tube 7 to
Extending the most laterally away from the one end in the middle part of plastic tube 7, this arc surface 71 is sticked in interior weldering
The outside of seam 4.
The two ends of the plastic tube 7 that the lining of the present invention moulds flanged pipe are respectively formed arc surface 71, this circle
Cambered surface 71 is sticked in the outside of inside weld 4, so can block inside weld 4, it is to avoid interior weldering
Seam 4 contacts with water, prevents inside weld 4 from corroding, and this arc surface 71 is near plastic tube
One end in the middle part of in the of 7 is to extending the most laterally away from the one end in the middle part of plastic tube 7, so, again
The arc surface 71 for guiding can be formed, it is simple to other pipelines at the two ends of plastic tube 7
Connect.
Preferably, this steel pipe 6 is coating steel pipe.
Further, outside weld is formed between lateral surface and the end face of flange 1 one end of steel pipe 6
5。
Please with reference to Fig. 1 and Fig. 2, the lining of the present invention moulds the manufacturing process of flanged pipe, including:
Be set with two flanges 1 at the two ends of steel pipe 6, the two ends of this steel pipe 6 are formed respectively
Two end faces, and two flanges 1 are welded and fixed with steel pipe 6；
PUR is set outside plastic tube 7, and utilizes bench that plastic tube 7 is drawn in steel pipe
Inside 6, two of plastic tube 7 is positioned at the outside of steel pipe 6；
Outside at plastic tube 7 two is set with two adapter sleeves 2 respectively, and adapter sleeve 2 is connected to
On the end face of flange 1；
Inner side at plastic tube 7 two is installed two and is sealed conehead 3, plastic tube 7 sandwiched respectively
Between adapter sleeve 2 and sealing conehead 3, one of them seals and offers and plastics on conehead 3
The air inlet of the internal connection of pipe 7；
It is the internal injecting compressed air of plastic tube 7 by this air inlet, and pressurize；
This is provided with and seals lining of conehead 3 and adapter sleeve 2 and mould flanged pipe and be positioned over heating furnace and add
Heat, makes hotmelt melts, and utilizes a drive mechanism to drive lining to mould flanged pipe rotation；
Lining is moulded flanged pipe take out heating furnace and lining is moulded flanged pipe cooling, make PUR solidify；
Take off adapter sleeve 2 and seal conehead 3, the port of finishing plastic tube 7.
The lining of the present invention is moulded the manufacturing process of flanged pipe and is first welded and fixed two in the outside of steel pipe 6
Individual flange 1, outside is provided with the plastic tube 7 of PUR and draws in steel pipe 6 by recycling bench
Inner side, is the internal injecting compressed air of plastic tube 7 by this air inlet, is made plastic tube 7 outside
Support the inner side with steel pipe 6 to be adjacent to, utilize a drive mechanism to drive lining to mould flanged pipe in heating furnace
Rotate, so that PUR is fully contacted with steel pipe 6 and plastic tube 7, then, lining is moulded method
Blue pipe takes out heating furnace and lining is moulded flanged pipe cooling, makes PUR solidify, just secures plastics
Pipe 7 and steel pipe 6, then, then repair the port of plastic tube 7, such heating side
Formula can first welded flange 1, then fixed plastics pipe 7, it is to avoid when welded flange 1 to moulding
Material pipe 7 damages, and eliminates the reparing process of plastic tube 7, improves work efficiency, keeps away
Exempt from again to repair and cause the unequal quality problems of bonding not labor, docking.
Preferably, the end face of this steel pipe 6 is positioned at the inner side of this flange 1, at steel pipe 6 during welding
End face and the medial surface of flange 1 between formed inside weld 4, PUR solidify after, plastics
Two of pipe 7 is all sticked outside inside weld 4 and forms arc surface 71, and this arc surface 71 is from leaning on
One end in the middle part of nearly plastic tube 7 is to extending the most laterally away from the one end in the middle part of plastic tube 7.
As such, it is possible to block inside weld 4, it is to avoid inside weld 4 contacts with water, prevent inside weld 4 rotten
Erosion, and one end that this arc surface 71 is in the middle part of close plastic tube 7 is to away from plastic tube 7
The one end in portion extends the most laterally, so, can be formed at the two ends of plastic tube 7 again and be used for
The arc surface 71 guided, it is simple to be connected with other pipelines.
Preferably, formed between the lateral surface and the end face of flange 1 one end of steel pipe 6 during welding
Outside weld 5.
Preferably, smooth to carrying out reconditioning at inside weld 4 and outside weld 5 after welding, then at steel
Pipe 6 inwall carries out blasting treatment.
Preferably, after set installs adapter sleeve 2, reserve 10mm's in the outside of adapter sleeve 2
Plastic tube 7, remaining saw removes.
The structure of drive mechanism can be multiple, as long as lining can be driven to mould flanged pipe at heating furnace
Inside rotate；Preferably, drive mechanism includes support body, two tumblers and power set,
Two tumblers are articulated on support body by rotating shaft, and power set are arranged on support body and for carrying
Dynamic axis of rotation, lining is moulded two sealing coneheads 3 of flanged pipe and is fixed on two tumblers.Again
Preferably, support body can also be installed a breather, one end of breather by swivel joint with
The sealing conehead 3 being provided with passage 31 connects, and the other end is connected to outside feeder.
Preferably, after lining is moulded flanged pipe taking-up heating furnace, first it is pressurized to 0.8MPa, protects
Pressure a period of time, make plastic tube 7 expand and be attached to steel pipe 6 inwall, then lining is moulded flanged pipe carry out
Cooling, so can make steel pipe 6 and plastic tube 7 the most bonding.
Preferably, utilize the mode of Water spray that lining is moulded flanged pipe and lower the temperature, make plastic tube 7
It is cooled to less than 60 DEG C.
Preferably, heating furnace is combustion type tunnel heating furnace.
It will be apparent to those skilled in the art that can technical scheme as described above and structure
Think, make other various corresponding changes and deformation, and all these changes and deformation
Within all should belonging to the protection domain of the claims in the present invention.
Claims (10)
1. a lining moulds flanged pipe, it is characterised in that including:
Steel pipe, the two ends of this steel pipe form two end faces respectively；
Two flanges, are set in the two ends of steel pipe, and the end face of this steel pipe is positioned at this method
Blue inner side, each flange all fixes with steel pipe by inside weld and outside weld, outside weld connection
The lateral surface of steel pipe and the end face of flange one end, the end face of inside weld joint steel pipe and flange interior
Side, the bolt hole one_to_one corresponding of these two flanges arranges, and is correspondingly arranged on two flanges
The centrage of two bolts hole be located along the same line；
The plastic tube being coaxially disposed with steel pipe, steel pipe is fixed on by PUR in the outside of plastic tube
Inner side, the two ends of plastic tube are respectively formed arc surface, and this arc surface is from the middle part of the plastic tube
One end is to extending the most laterally away from the one end in the middle part of plastic tube, and this arc surface is sticked in interior weldering
The outside of seam.
2. lining as claimed in claim 1 moulds flanged pipe, it is characterised in that this steel pipe is zinc-plated
Steel pipe.
3. lining moulds the manufacturing process of flanged pipe, it is characterised in that including:
Be set with two flanges at the two ends of steel pipe, the two ends of this steel pipe form two ends respectively
Face, and two flanges are fixed with steel-pipe welding；
PUR is set outside plastic tube, and utilizes bench to be drawn in steel pipe by plastic tube
Side, two of plastic tube is positioned at the outside of steel pipe；
Outside at plastic tube two is set with two adapter sleeves respectively, and adapter sleeve is connected to flange
On end face；
Inner side at plastic tube two is installed two and is sealed conehead respectively, and plastic pipe clip is located at connection
Overlapping and seal between conehead, one of them seals to offer on conehead and connects with inside of plastic tubes
Air inlet；
It is inside of plastic tubes injecting compressed air by this air inlet, and pressurize；
This lining being provided with sealing conehead and adapter sleeve is moulded flanged pipe and is positioned over heating furnace heating,
Make hotmelt melts, and utilize a drive mechanism to drive lining to mould flanged pipe rotation；
Lining is moulded flanged pipe take out heating furnace and lining is moulded flanged pipe cooling, make PUR solidify；
Take off adapter sleeve and seal conehead, the port of finishing plastic tube.
4. lining as claimed in claim 3 moulds the manufacturing process of flanged pipe, it is characterised in that should
The end face of steel pipe is positioned at the inner side of this flange, at end face and the medial surface of flange of steel pipe during welding
Between formed inside weld, PUR solidify after, two of plastic tube is all sticked outside inside weld
Side forms arc surface, this arc surface from the one end in the middle part of the plastic tube in the middle part of away from plastic tube
One end extend the most laterally.
5. lining as claimed in claim 3 moulds the manufacturing process of flanged pipe, it is characterised in that weldering
Between the lateral surface and the end face of flange one end of steel pipe, outside weld is formed when connecing.
6. lining as claimed in claim 3 moulds the manufacturing process of flanged pipe, it is characterised in that weldering
After connecing smooth to carrying out reconditioning at inside weld and outside weld, then carry out at sandblasting at steel pipe inner wall
Reason.
7. lining as claimed in claim 3 moulds the manufacturing process of flanged pipe, it is characterised in that
After set installs adapter sleeve, reserving the plastic tube of 10mm in the outside of adapter sleeve, remaining saw removes.
8. lining as claimed in claim 3 moulds the manufacturing process of flanged pipe, it is characterised in that drive
Motivation structure includes support body, two tumblers and power set, and two tumblers are by rotating shaft pivot joint
On support body, power set are arranged on support body and for driving axis of rotation, and lining moulds flanged pipe
Two sealing coneheads be fixed on two tumblers.
9. lining as claimed in claim 3 moulds the manufacturing process of flanged pipe, it is characterised in that
After lining is moulded flanged pipe taking-up heating furnace, first it is pressurized to 0.8MPa, pressurize a period of time, makes
Plastic tube expands and is attached to steel pipe inner wall, then lining is moulded flanged pipe lowers the temperature.
10. lining as claimed in claim 3 moulds the manufacturing process of flanged pipe, it is characterised in that
Lining is moulded flanged pipe and is lowered the temperature by the mode utilizing Water spray, make plastic tube be cooled to 60 DEG C with
Under.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610379705.8A CN105972335A (en) | 2016-05-31 | 2016-05-31 | Plastic-lined flange pipe and manufacturing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610379705.8A CN105972335A (en) | 2016-05-31 | 2016-05-31 | Plastic-lined flange pipe and manufacturing process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105972335A true CN105972335A (en) | 2016-09-28 |
Family
ID=57011441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610379705.8A Pending CN105972335A (en) | 2016-05-31 | 2016-05-31 | Plastic-lined flange pipe and manufacturing process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105972335A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109578707A (en) * | 2017-09-28 | 2019-04-05 | 湖南杉杉新能源有限公司 | Pipeline and preparation method thereof for the conveying of lithium electricity positive electrode |
| CN112549567A (en) * | 2020-12-10 | 2021-03-26 | 湖南振辉管业有限公司 | Clamp for metal plastic composite pipe compounding process |
| CN112824046A (en) * | 2019-11-20 | 2021-05-21 | 宝山钢铁股份有限公司 | Inner wall combined sand prevention plug for sand blasting of external threads of oil casing and anti-blocking method thereof |
| CN115111444A (en) * | 2021-03-19 | 2022-09-27 | 中国石油化工股份有限公司 | Plastic-lined pipeline branch pipe connecting structure |
| CN110671279B (en) * | 2019-10-28 | 2023-08-04 | 同济大学建筑设计研究院(集团)有限公司 | Reverse balance flange connection node and manufacturing method and application thereof |
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| CN204535412U (en) * | 2014-12-29 | 2015-08-05 | 广州市华粤管业有限公司 | A kind of rotation tube chassis |
| CN204526158U (en) * | 2014-12-29 | 2015-08-05 | 广州市华粤管业有限公司 | A kind of end structure being applicable to electromagnetic induction heating plastic lining composite steel pipe |
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| JP2002136920A (en) * | 2000-11-06 | 2002-05-14 | Sekisui Chem Co Ltd | Method for coating outer surface of synthetic resin pipe with hot melt adhesive |
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| CN203115344U (en) * | 2013-01-21 | 2013-08-07 | 章明伟 | Connecting device of flange steel plastic pipe, flange pipe and pipe with middle seal cartridge |
| CN204535412U (en) * | 2014-12-29 | 2015-08-05 | 广州市华粤管业有限公司 | A kind of rotation tube chassis |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109578707A (en) * | 2017-09-28 | 2019-04-05 | 湖南杉杉新能源有限公司 | Pipeline and preparation method thereof for the conveying of lithium electricity positive electrode |
| CN110671279B (en) * | 2019-10-28 | 2023-08-04 | 同济大学建筑设计研究院(集团)有限公司 | Reverse balance flange connection node and manufacturing method and application thereof |
| CN112824046A (en) * | 2019-11-20 | 2021-05-21 | 宝山钢铁股份有限公司 | Inner wall combined sand prevention plug for sand blasting of external threads of oil casing and anti-blocking method thereof |
| CN112549567A (en) * | 2020-12-10 | 2021-03-26 | 湖南振辉管业有限公司 | Clamp for metal plastic composite pipe compounding process |
| CN115111444A (en) * | 2021-03-19 | 2022-09-27 | 中国石油化工股份有限公司 | Plastic-lined pipeline branch pipe connecting structure |
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Application publication date: 20160928 |