CN102529090A - Fixed plastic pipe welding support frame - Google Patents
Fixed plastic pipe welding support frame Download PDFInfo
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- CN102529090A CN102529090A CN2010105849327A CN201010584932A CN102529090A CN 102529090 A CN102529090 A CN 102529090A CN 2010105849327 A CN2010105849327 A CN 2010105849327A CN 201010584932 A CN201010584932 A CN 201010584932A CN 102529090 A CN102529090 A CN 102529090A
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- air bag
- plastic pipe
- pipe welding
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- bracing ring
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Abstract
The invention discloses a fixed plastic pipe welding support frame which comprises an inflatable annular air bag, and a ring-form support ring is disposed at the inner side of the air bag and is used for supporting the air bag to maintain the annular shape. Aiming at the defects of complex structure, heaviness, inconvenience for moving, narrow application range, non-uniform pressure application, and non-adjustability according to local deformation of pipes for support devices in the prior art, the invention provides a fixed plastic pipe welding support frame which has a simple structure, uniform pressure application, high welding and sealing quality, good concentric positioning of two orifices, light weight, and carrying convenience.
Description
Technical field
The present invention relates to a kind of plastic pipe auxiliary welding equipment, relate in particular to a kind of fixed plastic pipe welding bracing frame.
Background technology
The plastic-steel composite winding pipe is to twine a plastic shaped band manufacturing through spiral to form; Because manufacturing approach makes the outer wall of this composite winding pipe have the structure of spirality vertical reinforcing rib; The pipe outer surface out-of-flatness can't adopt the method for attachment of existing plastic pipe to implement to connect.When the nominal bore diameter (Dn) of tubing reaches certain value, as greater than 1200 millimeters the time, tubing connects the modes that adopt inner wall hot melt belts to connect more to be realized.It is the connecting portion that earlier the hot melt band is placed in two sections mouth of pipe inwalls that inner wall hot melt belt connects; Being employed in the corresponding hot melt band of the bracing or strutting arrangement that is provided with in the tubing again compresses; Compressing hot melt band and inside pipe wall fit tightly; Again hot melt band binding post and power supply are joined, hot melt band energising heating is made evenly melting welding between hot melt band and the inside pipe wall.
The bracing or strutting arrangement that existing pipe material inner wall hot melt belt connects; But comprise and make Electric thermal smelting belt fit tightly inner-walls of duct and execute some camber top boards of certain pre-applied force, be connected and the several expansion mechanism of push-and-pull camber top board, support the fixed mount of retractor device and the walking dolly that carries fixed mount, telescoping mechanism and camber top board with the camber top board; The radiotropism arrangement along the tubing footpath such as camber top board, telescoping mechanism, fixed mount; Telescoping mechanism stretches out and promotes camber top board roof pressure at the hot melt band, makes the hot melt band be attached on the pipe material inner wall.There are a lot of problems in existing bracing or strutting arrangement in use:
1), complex structure, adopt the large-sized steel member more, whole device heavy being difficult for moved carrying inconvenience in pipeline.And caliber is reached the large-scale pipeline of 3000mm, and the volume of bracing or strutting arrangement increases, the corresponding increase of weight, and its weight is enough to damage plastic tube wall.
2), its retractor device supports by fixed mount, the scope of application is narrow, support space is limited.Need prepare multiple bracing frame to different tube diameters, carry and carry inconvenience.
3), connect the mouth of pipe inwall and the nisi face of cylinder, and local deformation has nothing in common with each other, existing curved roof can not be accomplished the location is adjusted and compressed to the mouth of pipe inwall on both sides separately.
4), cause the inequality of exerting pressure because of its deadweight when supporting, be unfavorable for connecting the concentric locating between the mouth of pipe, and cause the hot melt band to be difficult for fitting fully, do not reach the effect of sealing with two tube walls.
5), the lap-joint of hot melt band is protruding, but need evenly exert pressure during welding, otherwise seam crossing is prone to form the space, do not reach the effect of sealing.But existing arc supporting construction can not be exerted pressure to the overlap joint high spot.
Summary of the invention
The technical problem that the present invention will solve is;, the heavy inconvenience complicated uneven defective that moves, exerts pressure to the support device structure of prior art, provide a kind of simple in structure, exert pressure evenly, the welded seal Functionality, quality and appealing design, to good, the in light weight fixed plastic pipe welding bracing frame easy to carry of concentric locating of two mouths of pipe.
The technical solution adopted for the present invention to solve the technical problems is: a kind of fixed plastic pipe welding bracing frame, comprise inflatable annular air-pocket, and the air bag inboard is provided with and is used for the annular bracing ring that support air bag keeps annular.
Said bracing ring axial width and Electric thermal smelting belt are provided with the width basically identical.
The bracing ring edge of the axial both sides of said air bag is provided with and is used for spacing block piece is carried out in the axial both sides of air bag.
Said block piece is provided with a circle along the edge of bracing ring; Perhaps said block piece is arranged on the axial both sides of the edge of bracing ring at interval.
The width of said block piece height and bracing ring satisfies: air bag after the ccontaining inflation and Electric thermal smelting belt, but the block piece height is not higher than the Electric thermal smelting belt outer surface that attaches with plastic pipe, promptly leaves the gap between block piece and the plastic pipe inwall.
Said bracing ring is spliced into annular by the arc of at least two evaginations, and adjacent arc end face offsets and detachably is fixed together through connector.
Said connector is separately positioned on the inboard plate face of adjacent two arcs, or/and be arranged on adjacent two arc outer ledges.
Said connector comprises snap close and the clasp that on two adjacent arcs, is provided with respectively, and snap close is hooked in the clasp two arcs are fixed together.
The another kind of scheme of said connector is: the bearing pin that is included in the fixed cover that is provided with respectively on two adjacent arcs, pegs graft with fixed cover; Fixed cover on said two arcs is crisscross arranged, and bearing pin is inserted into simultaneously in two fixed covers on the arc two adjacent arcs are fixed together.
Be provided with the part adjustment support member that is used to eliminate the local deformation of the plastic pipe mouth of pipe in the axial both sides of bracing ring; Said local adjustment support member comprises the fixture that is connected with bracing ring, and the moving member with fixture is spirally connected is connected with the top board that is used for the roof pressure plastic pipe on moving member.
The axial both sides of said bracing ring are outward extended with engaging lug, and said engaging lug is detachably fixing with local adjustment support member.
Said air bag is respectively arranged with at least one intake valve and an air bleeding valve; Air bag is single layer structure air bag or sandwich construction air bag; Wherein the single layer structure air bag adopts the individual layer annular air-pocket that high temperature resistant, resistance to compression, folding, ageing-resistant material are processed.
The sandwich construction air bag is outside the individual layer air bag, to be provided with bearing course and/or high refractory layer; Wherein bearing course wraps up whole individual layer air bag, the balloon surface that said high refractory layer is arranged on directly at least and Electric thermal smelting belt attaches.The heat resisting temperature of high refractory layer will be more than 130 ℃, as long as the general temperature that can bear 130 ℃-250 ℃.
High refractory layer is preferably high-temperaure coating or thermal insulation layer; High-temperaure coating is selected silicone coatings for use, preferred heat insulation resistant to elevated temperatures flexible mica sheet interlayer of thermal insulation layer or fiberglass braided glue curtain layer.
Bearing course is selected braid, and wherein preferred glass fibers braiding glue curtain layer, all steel silk braiding glue curtain layer because above-mentioned material can improve the bearing strength of whole air bag, make air bag have high pressure-bearing property.
The bladder shape advantageous cross sections is the air bag of rectangle, garden angular moment shape; The less arc end rectangle of curvature telescopic variation scope that can also advantageous cross sections has relative two sections flat segments and two ends.
Adopt the rigid support circle of annular to support inflatable annular air-pocket among the present invention, through the reaction force generation outside roof pressure power of bracing ring, make two mouth of pipe concentric locatings of plastic pipe weld behind the airbag aeration air bag.And bracing frame of the present invention is placed in two butt joint mouths of pipe, aims at the Electric thermal smelting belt that two mouth of pipe connecting portions are provided with, and annular air-pocket inflation back is to the mouth of pipe inwall expansion that is soldered; Compress Electric thermal smelting belt, soft air bag can be fitted with Electric thermal smelting belt fully, can evenly apply pressure on the Electric thermal smelting belt that mouth of pipe inwall one circle is provided with; And can eliminate the plastic pipe local deformation basically and cause the space between Electric thermal smelting belt and the tube wall; Especially the mouth of pipe at plastic tube is not under the situation of just justifying, and can fully fit and the tensioner Electric thermal smelting belt, makes Electric thermal smelting belt can both fit tightly inner-walls of duct in any position; Mouth of pipe seam crossing is fitted fully, can guarantee the welding quality.During welding; Electric thermal smelting belt binding post and power supply are joined; Electric thermal smelting belt energising heating is made even melting welding under the even pressuring action of air bag between hot melt band and the inside pipe wall; Especially Electric thermal smelting belt can progressively melt at overlap joint protruding seam crossing and local deformation recess, and fills up in the space that seam crossing and recess form at the molten down stream of evenly exerting pressure of air bag, reaches the effect of sealing fully and reaches higher welding quality and weld appearance preferably.
Description of drawings
To combine accompanying drawing and embodiment that the present invention is described further below, in the accompanying drawing:
Fig. 1 is the structural representation of the embodiment of the invention;
Fig. 2 is the cutaway view that the embodiment of the invention has local adjustment support member;
Fig. 3 is an embodiment of the invention arc syndeton sketch map.
The specific embodiment
Like Fig. 1,2, shown in 3, a kind of fixed plastic pipe welds bracing frame, is placed on the inboard of two plastic pipe 100 mouth of pipe jointing positions; Fixed plastic pipe welding bracing frame comprises inflatable annular air-pocket 400; Air bag 400 inboards are provided with and are used for the bracing ring 300 that support air bag 400 keeps annular, and bracing ring 300 is for to have the Circular Plate of certain width, and bracing ring 300 width are that the width of Circular Plate should be suitable with Electric thermal smelting belt 200 width; Make air bag 400 can compress Electric thermal smelting belt 200 comprehensively; The edge that comprises Electric thermal smelting belt 200, corresponding minimizing Electric thermal smelting belt 200 space occurs not fitting with pipe material inner wall, causes the incomplete situation of sealing.Bracing ring 300 is as a rigid cage; The annular of the nothing splicing of one has optimum support force, and it is also convenient to use, during use; The bracing ring 300 that directly cover is installed air bag 400 is placed in the butt joint mouth of pipe that will weld together, and aims at Electric thermal smelting belt 200 and gets final product.Because bracing ring 300 is overall structures; Therefore; Require the diameter of bracing ring 300 and the plastic pipe 100 internal diameters coupling that will weld; Just the gap between bracing ring 300 and the plastic pipe 100 is less than the maximum height after air bag 400 is inflated, and makes the air pressure of air bag 400 inflations can convert the extruding force to Electric thermal smelting belt 200 to, needs to adopt the bracing ring 300 and air bag 400 of suitable dimension for the plastic pipe 100 of different tube diameters.
Like Fig. 1,2, shown in 3; Easy to carry in order to transport; Bracing ring 300 usually is spliced by at least two sections evagination arc 301 at the scene, and firm in order to connect, then adjacent arc 301 end faces offset; Make arc 301 can not move or turn down each other, guarantee to form a complete annulus.Adjacent arc 301 detachably is fixed together through connector 311.The quantity of arc 301 is too much unsuitable, and generally at 2～6, otherwise on-the-spot a large amount of splicing can increase the working time, and splicing too much also is unfavorable for the stability of bracing ring 300.Present embodiment adopts two identical arcs 301 to form bracing ring 300.
Like Fig. 1,2, shown in 3, the connection between the arc 301 is to connect at the scene through connector 311, therefore, requires connector 311 to satisfy arc 301 and connects or take apart convenient and swift.Simultaneously; In order not influence installing and using of air bag 400; Then connector 311 operated by rotary motion are on the plate face of adjacent two arcs 301 inboards; Perhaps be arranged on adjacent two arc 301 outer ledges, promptly be arranged on arc 301 edges of the axial both sides of annular air-pocket 400, also can on the plate face of adjacent two arcs 301 inboards, all be provided with connector 311 with adjacent two arc 301 outer ledges.
The structure of said connector 311 comprises a variety of, and for example: hinge, snap close and clasp, plug-in unit, the bolt of each other pegging graft are connected etc.The preferred connector 311 of present embodiment comprises snap close and the clasp that on two adjacent arcs 301, is provided with respectively, and snap close is hooked in the clasp two arcs 301 are fixed together.
Said connector 311 another kind of preferred versions are: the bearing pin that is included on two adjacent arcs 301 fixed cover that is provided with respectively, pegs graft with fixed cover; Fixed cover on said two adjacent arcs 301 is crisscross arranged, and bearing pin is inserted into simultaneously in two fixed covers on the arc 301 two adjacent arcs 301 are fixed together.In the present embodiment; Fixed cover is crisscross arranged respectively in the inboard at adjacent two arc 301 two ends; Make that fixed cover was pegged graft each other when two arcs 301 were bolted together, the quantity of fixed cover is provided with one at least on each arc 301; Quantity is set helps stable the connection more, but also can be at two arcs 301 a long fixed cover respectively is set.Bearing pin is plugged in the fixed cover, breaks away from for preventing bearing pin, and the nut 312 that is spirally connected respectively at the bearing pin two ends is fixing, and the present invention adopts wing nut, easy disassembly.
Except above-mentioned connected mode, can also be provided with fixed head at arc 301 outer ledges perpendicular to bracing ring 300, the fixed head of adjacent two arcs 301 is overlapped, and lap is through bolt together.
Like Fig. 1,2, shown in 3, bracing ring 300 edges of said air bag 400 axial both sides are provided with and are used for spacing block piece 302 is carried out in air bag 400 axial both sides.Block piece 302 can also can be to be obliquely installed at bracing ring 300 edges perpendicular to bracing ring 300.The effect of block piece 302 is that restriction air bag 400 moves axially, and prevents that air bag 400 from axially departing from Electric thermal smelting belt 200, so the embodiment of block piece 302 has multiplely, and wherein a kind ofly be: said block piece 302 is provided with a circle along the edge of bracing ring 300; Another kind is: block piece 302 is arranged on the bracing ring 300 axial both sides of the edge at interval, and this dual mode can both play the position-limiting action to air bag 400.The structure of block piece 302 can be the baffle plate that a circle is set at bracing ring 300 edges, the insulating frame that a circle is set, with the concentric loop isolation stall in bracing ring 300 edges etc., can also be insulated column, the baffle plate of setting at interval to be set at bracing ring 300 marginating compartments.No matter be the block piece 302 of what structure; The width of said block piece 302 height and bracing ring 300 satisfies: air bag 400 and Electric thermal smelting belt 200 after the ccontaining inflation; But block piece 302 highly is not higher than Electric thermal smelting belt 200 and the outer surface that plastic pipe 100 attaches, and makes that the air bag 400 after the inflation can compress Electric thermal smelting belt 200.
Two adjacent arc 301 end faces can flush; Also can be illustrated in figure 3 as concave-convex clutch pegs graft; Concave-convex clutch is pegged graft can strengthen two connections between the bracing ring 300, and fixed cover and bearing pin partly can directly be set as connector 311 in the concave-convex clutch grafting.
Like Fig. 1,2, shown in 3; The block piece 302 that is provided with at bracing ring 300 outer ledges can be an one with connector 311 also; The air bag 400 that a plate type part both can be used as behind block piece 302 restricted chargings extends to both sides, makes it compress Electric thermal smelting belt 200 to the expansion of bracing ring 300 outsides; Can also be used for the connection between the arc 301 as connector 311, improve the rigidity of bracing ring 300 and keep the annular of bracing ring 300.Present embodiment is selected U type groove metallic plate punching press or Welding Structure, and promptly bracing ring 300 is the U-lag structure of one with block piece 302, and wherein groove width and groove depth are advisable with air bag 400 to take Electric thermal smelting belt 200 fully in.
Annular air-pocket 400 is provided with at least one intake valve and an air bleeding valve, is used for inflation and exhaust.Structure according to air bag 400 is divided into: single layer structure air bag or sandwich construction air bag.Wherein the single layer structure air bag is the annular air-pocket that adopts high temperature resistant, folding, resistance to compression, ageing-resistant material directly to process.Preferably high temperature resistant, folding, resistance to compression, ageing-resistant elastomeric material or the RIPSTOP that scribbles silicones are directly processed annular air-pocket.
The sandwich construction air bag is outside the individual layer air bag, to be provided with bearing course or high refractory layer, also bearing course and high refractory layer can be set simultaneously, and at this moment, high refractory layer is positioned at outside the bearing course; Wherein bearing course wraps up whole individual layer air bag.And air bag 400 surfaces that high refractory layer is arranged on directly at least and Electric thermal smelting belt attaches, promptly high refractory layer can also all coat whole air bag 400 surfaces get up except being provided with on the air bag that directly contacts with Electric thermal smelting belt 400 surfaces.The heat resisting temperature of high refractory layer will be more than 130 ℃, as long as the general temperature that can bear 130 ℃-250 ℃.High refractory layer is preferably high-temperaure coating or thermal insulation layer; High-temperaure coating is selected silicone coatings for use; Thermal insulation layer is used to isolate the high temperature of Electric thermal smelting belt; Make that air bag 400 avoids damaging under the high temperature, the preferred heat resisting temperature of thermal insulation layer is processed at the material more than 130 ℃, most preferably heat insulation resistant to elevated temperatures flexible mica sheet interlayer or fiberglass braided glue curtain layer.Bearing course is selected braid, and wherein preferred glass fibers braiding glue curtain layer, all steel silk braiding glue curtain layer because above-mentioned material can improve the bearing strength of whole air bag 400, make air bag have high pressure-bearing property.
As shown in Figure 2; Because plastic pipe 100 in welding process, when two mouth of pipe parts distortion being arranged, just can not be aimed at fully; So, just can be fixedly connected and be useful on the part adjustment support member 9 of eliminating plastic pipe 100 mouth of pipe local deformations in bracing ring 300 both sides.
Said local adjustment support member 9 comprise with bracing ring 300 on block piece 302 fixture 95 that is fixedly connected or removably connects, the moving member 96 with fixture 95 is spirally connected is connected with the top board 92 that is used for roof pressure plastic pipe 100 on moving member 96.Fixture 95 is fixedly connected with the block piece 302 of bracing ring 300, and fixture 95 has the screw of internal thread up/down perforation, and moving member 96 is screwed onto in the screw, moves up and down, and moving member 96 tops removably connect or are fixed with horizontal top 92.In order to prevent rigid panel 92 damage plastic pipes 100, on top board 92 end faces, be provided with elastic buffering pad 91, reduce the damage that top board 92 and roof pressure plastic pipe 100 cause.In the present embodiment, fixture 95 is selected nut, and moving member 96 is selected double-screw bolt.Through adjustment moving member 96 height up and down, make top board 92 partial top compression molding material tubing 100, adjust its local deformation.When top board 92 and moving member 96 were rotationally connected, top board 92 part 96 that can also relatively move horizontally rotated the position of adjustment roof pressure plastic pipe 100.Moving member 96 tops are inserted in the groove of top board 92 bottoms setting; Radially have annular slot 94 at moving member 96 tops; Thimble 93 fixing on the groove wall is plugged in the draw-in groove 94; Thimble 93 can move in annular slot 94, makes top board to horizontally rotate but can not separate with moving member 96.
The roof pressure power that adopts annular bracing ring 300 to keep air bag 400 to continue among the present invention.Overall structure is simple, in light weight, for further weight reduction, can also be at punching press through hole on bracing ring 300 and the block piece 302 with weight reduction, and welding or be connected backplate with the raising rigidity on bracing ring 300 and block piece 302.
Claims (11)
1. a fixed plastic pipe welding bracing frame is characterized in that, comprise inflatable annular air-pocket, the air bag inboard is provided with and is used for the annular bracing ring that support air bag keeps annular.
2. fixed plastic pipe welding bracing frame according to claim 1 is characterized in that the bracing ring edge of the axial both sides of said air bag is provided with and is used for spacing block piece is carried out on the air bag both sides.
3. fixed plastic pipe welding bracing frame according to claim 2 is characterized in that said block piece is provided with a circle along the edge of bracing ring; Perhaps said block piece is arranged on the axial both sides of the edge of bracing ring at interval.
4. fixed plastic pipe welding bracing frame according to claim 2; It is characterized in that; The width of said block piece height and bracing ring satisfies: air bag after the ccontaining inflation and Electric thermal smelting belt, but the block piece height is not higher than the Electric thermal smelting belt outer surface that attaches with plastic pipe.
5. according to any described fixed plastic pipe welding bracing frame of claim 1-4; It is characterized in that; Said bracing ring is spliced into annular by the arc of at least two evaginations, and adjacent arc end face offsets and detachably is fixed together through connector.
6. fixed plastic pipe welding bracing frame according to claim 5 is characterized in that said connector is separately positioned on the inboard plate face of adjacent two arcs, or/and be arranged on adjacent two arc outer ledges.
7. fixed plastic pipe welding bracing frame according to claim 6 is characterized in that said connector comprises snap close and the clasp that on two adjacent arcs, is provided with respectively, and snap close is hooked in the clasp two arcs are fixed together.
8. fixed plastic pipe welding bracing frame according to claim 6; It is characterized in that; The bearing pin that said connector is included on two adjacent arcs the fixed cover that is provided with respectively, pegs graft with fixed cover; Fixed cover on said two arcs is crisscross arranged, and bearing pin is inserted into simultaneously in two fixed covers on the arc two adjacent arcs are fixed together.
9. according to any described fixed plastic pipe welding bracing frame of claim 1-4, it is characterized in that, be provided with the part adjustment support member that is used to eliminate the local deformation of the plastic pipe mouth of pipe in the axial both sides of bracing ring; Said local adjustment support member comprises the fixture that is connected with bracing ring, and the moving member with fixture is spirally connected is connected with the top board that is used for the roof pressure plastic pipe on moving member.
10. fixed plastic pipe welding bracing frame according to claim 9 is characterized in that the axial both sides of said bracing ring are outward extended with engaging lug, and said engaging lug is detachably fixing with local adjustment support member.
11., it is characterized in that said air bag is respectively arranged with at least one intake valve and an air bleeding valve according to any described fixed plastic pipe welding bracing frame of claim 1-4; Air bag is single layer structure air bag or sandwich construction air bag; Wherein the single layer structure air bag is to adopt high temperature resistant, resistance to compression, folding, ageing-resistant material to process the annular air-pocket of individual layer; The sandwich construction air bag is outside the individual layer air bag, to be provided with bearing course and/or high refractory layer; Wherein bearing course wraps up whole individual layer air bag, the balloon surface that said high refractory layer is arranged on directly at least and Electric thermal smelting belt attaches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105849327A CN102529090A (en) | 2010-12-10 | 2010-12-10 | Fixed plastic pipe welding support frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105849327A CN102529090A (en) | 2010-12-10 | 2010-12-10 | Fixed plastic pipe welding support frame |
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| Publication Number | Publication Date |
|---|---|
| CN102529090A true CN102529090A (en) | 2012-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105849327A Pending CN102529090A (en) | 2010-12-10 | 2010-12-10 | Fixed plastic pipe welding support frame |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104708534A (en) * | 2013-12-17 | 2015-06-17 | 北京有色金属研究总院 | Polishing method for major-diameter thin-wall metal tube stock |
| CN109741870A (en) * | 2019-01-24 | 2019-05-10 | 蒋莲莲 | A kind of power supply line |
| CN110315763A (en) * | 2019-07-03 | 2019-10-11 | 天津市津能管业有限公司 | A kind of automatic sweating welder and welding method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2769040Y (en) * | 2005-01-20 | 2006-04-05 | 陈绍江 | Supporting device for plastic pipe inner wall electric heating welding |
| CN201217140Y (en) * | 2008-07-16 | 2009-04-08 | 宝山钢铁股份有限公司 | Pipeline welding interfacing apparatus |
| CN201970465U (en) * | 2010-12-10 | 2011-09-14 | 华瀚科技有限公司 | Fixed support frame for welding plastic tubes |
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2010
- 2010-12-10 CN CN2010105849327A patent/CN102529090A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2769040Y (en) * | 2005-01-20 | 2006-04-05 | 陈绍江 | Supporting device for plastic pipe inner wall electric heating welding |
| CN201217140Y (en) * | 2008-07-16 | 2009-04-08 | 宝山钢铁股份有限公司 | Pipeline welding interfacing apparatus |
| CN201970465U (en) * | 2010-12-10 | 2011-09-14 | 华瀚科技有限公司 | Fixed support frame for welding plastic tubes |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104708534A (en) * | 2013-12-17 | 2015-06-17 | 北京有色金属研究总院 | Polishing method for major-diameter thin-wall metal tube stock |
| CN109741870A (en) * | 2019-01-24 | 2019-05-10 | 蒋莲莲 | A kind of power supply line |
| CN110315763A (en) * | 2019-07-03 | 2019-10-11 | 天津市津能管业有限公司 | A kind of automatic sweating welder and welding method |
| CN110315763B (en) * | 2019-07-03 | 2022-03-15 | 天津市津能管业有限公司 | Automatic hot-melt welding machine and welding method |
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Application publication date: 20120704 |