CN106583954A - Preparation method of plastic lining steel tube in welded connection - Google Patents
Preparation method of plastic lining steel tube in welded connection Download PDFInfo
- Publication number
- CN106583954A CN106583954A CN201611065868.5A CN201611065868A CN106583954A CN 106583954 A CN106583954 A CN 106583954A CN 201611065868 A CN201611065868 A CN 201611065868A CN 106583954 A CN106583954 A CN 106583954A
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- CN
- China
- Prior art keywords
- steel tube
- plastic
- welded
- steel pipe
- stainless steel
- 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
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
- B23K31/027—Making tubes with soldering or welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
-
- 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
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
- B23K2101/06—Tubes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
The invention discloses a preparation method of a plastic lining steel tube in welded connection. The preparation method comprises the following steps: (1) peeling a section of a plastic preservative layer at the port of the plastic lining steel tube which is lined with plastic, wherein the port of the preservative plastic lining steel tube without the plastic is a connecting end of an outer steel tube; (2) lining the inner wall of the connecting end without the plastic preservative layer with a hot melt adhesive, wherein the hot melt adhesive is attached to the inner wall of the connecting end to form a hot melt adhesive layer; (3) inserting a stainless steel tube into the outer steel tube from the connecting end of the outer steel tube, wherein the outer wall of the stainless steel tube is bonded to the hot melt adhesive layer; and (4) then welding the outer wall of the stainless steel tube with the port of the outer steel tube. The plastic lining steel tube prepared by the method not only can effectively solve the problem of electrochemical corrosion after heterogeneous steel welding, but also can solve the structural problem that steel plastic tubes cannot be directly in welded connection, and the application of stainless steel in steel plastic tube manufacturing is expanded.
Description
Technical field
The present invention relates to the preparation method of line plastic-steel tube, more particularly to a kind of preparation using the line plastic-steel tube being welded to connect
Method.
Background technology
As the application of line plastic-steel tube constantly extends, connection of the people to line plastic-steel tube is put forward higher requirement.
The line plastic-steel tube of Vehicles Collected from Market supply adopts traditional screw thread, three kinds of connected modes of groove or flange substantially；But at some
The fields such as the special dimension such as buried long-distance transport pipes of industrial project tube for fluid transfer, petroleum and petrochemical industry, municipal underground pipe network, it is desirable to
Using being welded to connect, while also requiring that anticorrosive coat can not be destroyed inside pipeline, traditional connected mode can not meet above-mentioned wanting
Ask；In above-mentioned field, the existing connected mode of common line plastic-steel tube there is a problem of serious：The connection of line plastic-steel tube is not very square
Just.If directly using to be welded to connect to cause inner lining plastic tube to be destroyed because of high temperature, so as to lose the guarantor of the lining plastic bed of material
Shield is acted on, and affects pipe-line system safety.In consideration of it, we devise a kind of line plastic-steel tube that can be used for being welded to connect and provide
The production method of the line plastic-steel tube, so that the line plastic-steel tube of this kind of structure can obtain the application of scale.
Separately there is the China Patent No. to be：200720082683.5, the day for announcing is 2008.11.19, discloses a kind of butt joint type lining
Plastic Steel Pipe, including steel pipe body, it is characterised in that the butt weld type plastic lined steel pipe is additionally provided with internal lining pipe, internal lining pipe is close to steel
Tube body inwall, steel pipe body end are provided with stainless steel tube.Internal lining pipe is plastic tube, to prevent the electrochemical corrosion of pipe material inner wall
And fouling, while preventing pollution of the steel pipe body to tube fluid.The defect that above-mentioned utility model is present：1st, the direct face of plastic lining layer
Fluid medium is washed away, and lining plastic port position is easily washed delamination, affects pipe-line system safety；2nd, when plastic lining layer is shelled
During to commissure, medium starts to corrode weld seam, and this corrosion comes from medium directly etching, the electrification more having between dissimilar steel
Learn corrosion；3rd, this kind of structure is difficult bonding at dissimilar metal weld, because the electromagnetic inductance of commissure it is easily disorderly in welding position
It is random, therefore position while welding can not realize effective bonding substantially；4th, stainless electromagnetic induction heating effect is poor, the steel of rustless steel pipeline section
Modeling bonding force is not protected to plastic lining layer in rustless steel pipe end, in fluid media (medium) far below carbon steel and the bonding force of plastics
In course of conveying, the plastic lining layer of rustless steel pipeline section is peeled off in the athletic meeting of fluid quickly, is separated so as to form steel modeling, destruction pipeline system
The interior anticorrosive coat of system, so as to further destroy the operation safety of tubing.
The content of the invention
In order to overcome the defect of above-mentioned prior art, the invention provides a kind of system using the line plastic-steel tube being welded to connect
Can not only be present electrochemical corrosion after effectively solving different steel weld in Preparation Method, the preparation method, and can solve
Steel modeling pipe directly using the structural issue being welded to connect can not have been expanded rustless steel and moulded the application in pipe manufacture in steel.
In order to solve above-mentioned technical problem, the technical solution used in the present invention is：
A kind of preparation method using the line plastic-steel tube being welded to connect, it is characterised in that comprise the steps：
(1) the plastic anti-corrosion layer for having completed the compound line plastic-steel tube port of lining plastic is peeled off into one section, is stripped plastics and prevents
Rotten line plastic-steel tube port is the connection end of outer steel pipe；
(2) PUR will be lining on the inwall of connection end, the melt viscosity is affixed on the inwall of connection end and forms PUR
Layer；
(3) stainless steel tube is inserted in outer steel pipe from the connection end of outer steel pipe, makes the outer wall and hot melt adhesive layer of stainless steel tube
Bonding；
(4) port again by the outer wall of stainless steel tube with outer steel pipe is welded.
When the stainless steel tube is inserted in outer steel pipe from the connection end of steel pipe, the insertion end of stainless steel tube exceedes plastic anti-corrosion
Layer, and the outer wall of stainless steel tube fitted with plastic anti-corrosion layer.
When the port of the stainless steel tube outer wall and outer steel pipe is welded, adopt without the need for external steel pipe or/and stainless steel tube
Cooling provision is taken, high temperature during welding makes the PUR being lining on the inwall of connection end melt completely, by outer steel pipe and rustless steel
Pipe adhering and sealing.
After the port of the outer wall of stainless steel tube and outer steel pipe is welded, on the set of commissure thermal shrinkable sleeve and which is carried out plus
Heat, makes thermal shrinkable sleeve shrink and coat in welded joints.
Described PUR is adhering resin, and hot melt adhesive layer is adhering resin layer.
It is a kind of to adopt the line plastic-steel tube being welded to connect, the line plastic-steel tube to include outer steel pipe, plastic anti-corrosion layer and rustless steel
Pipe, the two ends of the outer steel pipe are the connection end for connecting stainless steel tube, and the plastic anti-corrosion layer is glued with the inwall of outer steel pipe
Close, plastic anti-corrosion layer is arranged between two connection ends, the stainless steel tube is socketed in outer steel pipe, the outer wall of stainless steel tube and company
Connect between end by hot melt adhesive layer bonding.
The outer wall of the stainless steel tube in outer steel pipe is fitted with plastic anti-corrosion layer.
The port of outer steel pipe is welded with the outer wall of stainless steel tube, forms weld seam in weld.
The weld seam is provided with thermal shrinkable sleeve.
The present invention has advantages below：
1st, the present invention will complete the plastics of the compound line plastic-steel tube port of lining plastic on the basis of existing line plastic-steel tube
One section of anticorrosive coating peeling, the line plastic-steel tube port for being stripped plastic anti-corrosion is the connection end of outer steel pipe, using PUR (PUR
Layer) stainless steel tube and the outer steel pipe of line plastic-steel tube are carried out bonding, and welded, line plastic-steel tube obtained in this method can be with
The defect of utility model presence in prior art is solved, and is directly welded by stainless steel tube, solving steel modeling pipe can not be direct
Using the structural issue being welded to connect, rustless steel has been expanded and the application in pipe manufacture has been moulded in steel；Can be with effectively solving xenogenesis
There is electrochemical corrosion after steel welding.
2nd, the present invention make use of welding waste heat completely, efficiently solve viscous between steel modeling under the conditions of different heat-sensitive coefficients
Connect problem, using welding high temperature by two distinct types of steel effective adhering and sealing together；
3rd, welding high temperature can be converted into high using welding in implementation process by the present invention to the inferior position that plastics form destruction
The advantage of warm bonding difference steel grade, expanded steel modeling pipe process for machining and manufacturing, is that steel modeling pipe industry further provides one
Plant thinking.
4th, it is also an advantage of the present invention that (1) is attached to rustless steel excellent antiseptic power in the advantage of line plastic-steel tube,
The advantage that make use of rustless steel directly can weld, has further expanded the application of line plastic-steel tube, and has caused line plastic-steel tube
Connected mode it is more various；(2) make use of rustless steel as the rigidly good advantage of steel, stretch into stainless inside line plastic-steel tube
Steel pipe end can be prevented effectively from when fluid runs with the adhering and sealing of plastic lining layer to be washed away to plastic lining layer port, and washing away for fluid is straight
Connect and act on rustless steel port, and bear this exactly advantage of the rustless steel as steel of washing away, it is ensured that plastic lining layer is in pipeline
It is not destroyed during system operation.
5th, the present invention adopts the line plastic-steel tube being welded to connect, including outer steel pipe, plastic anti-corrosion layer and stainless steel tube, described outer
The two ends of steel pipe are the connection end for connecting stainless steel tube, and the plastic anti-corrosion layer is bonded with the inwall of outer steel pipe, and plastics are prevented
Rotten layer is arranged between two connection ends, and the stainless steel tube is socketed in outer steel pipe, between the outer wall of stainless steel tube and connection end
By hot melt adhesive layer bonding.Directly pipe end stainless steel tube is docked during installation, stainless steel tube welding can be completed into connection, construction
Simple and fast；After installation, it can be ensured that fluid media (medium) is completely cut off completely by interior anticorrosive coat with outer layer pipe, have pipe-line system
There is excellent antiseptic power.
6th, the outer wall and plastic anti-corrosion layer of one end that the stainless steel tube of line plastic-steel tube of the present invention is located in outer steel pipe fits,
By fluid media (medium) from inside and outside completely isolated with dissimilar metal weld, it is to avoid fluid media (medium) enters into the commissure of dissimilar steel, so as to keep away
Exempt from the electrochemical corrosion of dissimilar steel；Interior anticorrosive coat is pushed down by rustless steel completely, it is to avoid fluid media (medium) internal anticorrosive coat port is straight
Connect and wash away, interior anticorrosive coat is not affected by fluid operation completely, it is ensured that the safety of interior anticorrosive coat.
7th, the outer wall welding of the port of the outer steel pipe of line plastic-steel tube of the present invention and stainless steel tube, forms weld seam in weld,
And be provided with thermal shrinkable sleeve in welded joints, to thermal shrinkable sleeve, which heats so as to completely shrink be coated on commissure, it is ensured that weld seam not with
Contacting external air, prevents corrosion.
Description of the drawings
Fig. 1 is the structural representation of line plastic-steel tube of the present invention；
Fig. 2 present invention mounting connection structure schematic diagrams in pipe-line system；
Labelling in figure：1st, outer steel pipe, 2, plastic anti-corrosion layer, 3, hot melt adhesive layer, 4, stainless steel tube, 5, weld seam, 6, thermal shrinkable sleeve.
Specific embodiment
The present invention is described further below in conjunction with the accompanying drawings：
Embodiment 1
A kind of preparation method using the line plastic-steel tube being welded to connect, comprises the steps：
(1) plastic anti-corrosion layer is lining on the inwall between the connection end of outer steel pipe, is not lining on the inwall of its connection end
Plastic anti-corrosion layer；Connection end is that, for connecting stainless steel tube, the length of connection end is generally (240-300mm).Will be complete
The line plastic-steel tube (serving as a contrast full plastic anti-corrosion on the inwall of i.e. outer steel pipe completely) being combined into lining plastic, by this line plastic-steel tube two ends port
Plastic anti-corrosion layer peel off one section the connection end of outer steel pipe (this section be), make no plastic anti-corrosion layer on the inwall of connection end.
(2) bonding on the inwall of the connection end of plastic anti-corrosion layer will be lining into and is lining into PUR, the melt viscosity is affixed on
The inwall of connection end forms hot melt adhesive layer；
(3) stainless steel tube is inserted in outer steel pipe from the connection end of outer steel pipe, outer wall and the hot melt adhesive layer of stainless steel tube glue
Close；When stainless steel tube is inserted in outer steel pipe from the connection end of steel pipe, the insertion end of stainless steel tube exceedes plastic anti-corrosion layer, and stainless
The outer wall of steel pipe is fitted with plastic anti-corrosion layer.Stainless steel tube on the outside of outer steel pipe defines the line plastic-steel tube of the present invention and exists
For the connector for welding during construction, while line plastic-steel tube is connected, as shown in Figure 2.
(4) port and then by the outer wall of stainless steel tube with outer steel pipe is welded, and the lining plastic of the present invention is formed after welding
Steel pipe, when the port of stainless steel tube outer wall and outer steel pipe is welded, takes cooling to arrange without the need for external steel pipe or/and stainless steel tube
Apply, its objective is to make on the inwall of connection end, to be lining into PUR using high temperature during welding to melt completely, by outer steel pipe with it is stainless
Steel pipe adhering and sealing.As shown in Figure 1.
After the port of the outer wall of stainless steel tube and outer steel pipe is welded, on the set of commissure thermal shrinkable sleeve and which is carried out plus
Heat, makes thermal shrinkable sleeve shrink and coat in welded joints, it is ensured that weld seam not with contacting external air.
The PUR of the present invention is adhering resin, and hot melt adhesive layer is adhering resin layer, and the temperature of adhering resin should be higher than that this
More than 30 DEG C of the Vicat softening point of kind material, but highest must not be higher than 200 DEG C.
The line plastic-steel tube being welded to connect that the present invention is prepared using said method, as shown in figure 1, line plastic-steel tube includes outer steel
Pipe 1, plastic anti-corrosion layer 2 and stainless steel tube 4, the two ends of the outer steel pipe 1 are the connection end for connecting stainless steel tube 4, described
Plastic anti-corrosion layer 2 is bonded with the inwall of outer steel pipe 1, and plastic anti-corrosion layer 2 is arranged between two connection ends, 4 sets of the stainless steel tube
Be connected in outer steel pipe 1, between the outer wall of stainless steel tube 1 and connection end, be provided with hot melt adhesive layer 3, the outer wall of stainless steel tube 1 be connected
Pass through 3 bonding of hot melt adhesive layer between end.
Further, positioned at stainless steel tube 4 in outer steel pipe 1, its outer wall is fitted with plastic anti-corrosion layer 2.
Further, the port of outer steel pipe 1 is welded with the outer wall of stainless steel tube 4, forms weld seam 5 in weld, in weld seam 5
It is provided with thermal shrinkable sleeve 6.Specifically refer to, the outer wall of stainless steel tube 4 on the outside of outer steel pipe 1 is welded with the port of outer steel pipe 1.It is located at
4 one-tenth of stainless steel tube on the outside of outer steel pipe 1 line plastic-steel tube connector.
As shown in Fig. 2 directly pipe end stainless steel tube is docked when installing, by stainless steel tube (i.e. the connector of line plastic-steel tube)
Welding can complete connection, simple and fast of constructing；After installation, it can be ensured that interior anticorrosive coat is by fluid media (medium) and outer layer pipe
Completely cut off completely, make pipe-line system that there is excellent antiseptic power.
Claims (9)
1. it is a kind of using the preparation method of line plastic-steel tube being welded to connect, it is characterised in that to comprise the steps：
(1) the plastic anti-corrosion layer for having completed the compound line plastic-steel tube port of lining plastic is peeled off into one section, is stripped plastic anti-corrosion
Line plastic-steel tube port is the connection end of outer steel pipe；
(2) PUR will be lining on the inwall of connection end, the melt viscosity is affixed on the inwall of connection end and forms hot melt adhesive layer；
(3) stainless steel tube is inserted in outer steel pipe from the connection end of outer steel pipe, the outer wall and hot melt adhesive layer for making stainless steel tube is bonded；
(4) port again by the outer wall of stainless steel tube with outer steel pipe is welded.
2. according to claim 1 a kind of using the preparation method of line plastic-steel tube being welded to connect, it is characterised in that：It is described
When stainless steel tube is inserted in outer steel pipe from the connection end of steel pipe, the insertion end of stainless steel tube exceedes plastic anti-corrosion layer, and rustless steel
The outer wall of pipe is fitted with plastic anti-corrosion layer.
3. according to claim 1 a kind of using the preparation method of line plastic-steel tube being welded to connect, it is characterised in that：It is described
When the port of stainless steel tube outer wall and outer steel pipe is welded, cooling provision is taken without the need for external steel pipe or/and stainless steel tube, weld
High temperature when connecing makes the PUR being lining on the inwall of connection end melt completely, by outer steel pipe and stainless steel tube adhering and sealing.
4. according to claim 1 a kind of using the preparation method of line plastic-steel tube being welded to connect, it is characterised in that：It is stainless
After the port of the outer wall of steel pipe and outer steel pipe is welded, thermal shrinkable sleeve which is heated on the set of commissure, make thermal shrinkable sleeve
Shrink and coat in welded joints.
5., according to a kind of arbitrary described preparation method using the line plastic-steel tube being welded to connect of claim 1-4, its feature exists
In：Described PUR is adhering resin, and hot melt adhesive layer is adhering resin layer.
6. a kind of using the line plastic-steel tube being welded to connect, it is characterised in that：Described line plastic-steel tube is using described in claim 1
Method make, the line plastic-steel tube includes outer steel pipe (1), plastic anti-corrosion layer (2) and stainless steel tube (4), the outer steel pipe (1)
Two ends be connection end for connecting stainless steel tube (4), the plastic anti-corrosion layer (2) and outer steel pipe (1) inwall bonding, modeling
Material anticorrosive coat (2) is arranged between two connection ends, and stainless steel tube (4) socket is interior in outer steel pipe (1), stainless steel tube (4)
It is bonding by hot melt adhesive layer (3) between outer wall and connection end.
7. according to claim 6 a kind of using the line plastic-steel tube being welded to connect, it is characterised in that：Positioned at outer steel pipe (1)
The outer wall of interior stainless steel tube (4) is fitted with plastic anti-corrosion layer (2).
8. according to claim 6 a kind of using the line plastic-steel tube being welded to connect, it is characterised in that：The end of outer steel pipe (1)
Mouth is welded with the outer wall of stainless steel tube (4), forms weld seam (5) in weld.
9. according to claim 8 a kind of using the line plastic-steel tube being welded to connect, it is characterised in that：On the weld seam (5)
It is provided with thermal shrinkable sleeve (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611065868.5A CN106583954A (en) | 2016-11-28 | 2016-11-28 | Preparation method of plastic lining steel tube in welded connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611065868.5A CN106583954A (en) | 2016-11-28 | 2016-11-28 | Preparation method of plastic lining steel tube in welded connection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106583954A true CN106583954A (en) | 2017-04-26 |
Family
ID=58595240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611065868.5A Pending CN106583954A (en) | 2016-11-28 | 2016-11-28 | Preparation method of plastic lining steel tube in welded connection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106583954A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110998164A (en) * | 2017-07-25 | 2020-04-10 | 米尼麦克斯维京研发有限公司 | Pipe arrangement consisting of pipes or pipe connections |
| CN113042968A (en) * | 2021-03-03 | 2021-06-29 | 刘�东 | Natural gas conveying pipeline |
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| CN2132901Y (en) * | 1992-07-14 | 1993-05-12 | 冯逸骅 | Melt-welding butt joint of inner wall plastic-coated steel pipe |
| CN1317386A (en) * | 2001-06-06 | 2001-10-17 | 东营柯林瑞尔科技有限责任公司 | Welding technology for linking steel-plastic tubes |
| CN200952626Y (en) * | 2006-07-17 | 2007-09-26 | 王金桥 | Arc erosion resisting thermal insulating anticorrosion liner connecting sleeve |
| CN101514771A (en) * | 2008-02-20 | 2009-08-26 | 甘国工 | Metal plastic composite tube with thermoplastic tube end contact flange |
| CN104625592A (en) * | 2013-11-13 | 2015-05-20 | 青岛旭升封头有限公司 | Production method of lining plastic steel pipe |
| CN205226691U (en) * | 2015-11-03 | 2016-05-11 | 四川鑫元通钢塑管业有限公司 | On --spot flange joint lining plastic steel pipe's of engineering plastics bush structure |
| CN105697896A (en) * | 2016-03-29 | 2016-06-22 | 四川鑫元通钢塑管业有限公司 | Method for manufacturing lining plastic pipe by using welded connection |
| CN205446994U (en) * | 2016-03-29 | 2016-08-10 | 四川鑫元通钢塑管业有限公司 | Adopt welded connection's lining plastic steel pipe |
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2016
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2132901Y (en) * | 1992-07-14 | 1993-05-12 | 冯逸骅 | Melt-welding butt joint of inner wall plastic-coated steel pipe |
| CN1317386A (en) * | 2001-06-06 | 2001-10-17 | 东营柯林瑞尔科技有限责任公司 | Welding technology for linking steel-plastic tubes |
| CN200952626Y (en) * | 2006-07-17 | 2007-09-26 | 王金桥 | Arc erosion resisting thermal insulating anticorrosion liner connecting sleeve |
| CN101514771A (en) * | 2008-02-20 | 2009-08-26 | 甘国工 | Metal plastic composite tube with thermoplastic tube end contact flange |
| CN104625592A (en) * | 2013-11-13 | 2015-05-20 | 青岛旭升封头有限公司 | Production method of lining plastic steel pipe |
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| CN105697896A (en) * | 2016-03-29 | 2016-06-22 | 四川鑫元通钢塑管业有限公司 | Method for manufacturing lining plastic pipe by using welded connection |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110998164A (en) * | 2017-07-25 | 2020-04-10 | 米尼麦克斯维京研发有限公司 | Pipe arrangement consisting of pipes or pipe connections |
| US12011627B2 (en) | 2017-07-25 | 2024-06-18 | Minimax Viking Research & Development Gmbh | Pipe arrangement consisting of a pipe or a pipe joint |
| CN113042968A (en) * | 2021-03-03 | 2021-06-29 | 刘�东 | Natural gas conveying pipeline |
| CN113042968B (en) * | 2021-03-03 | 2022-12-16 | 湛江新奥燃气发展有限公司 | Natural gas conveying pipeline |
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Application publication date: 20170426 |