CN109016526A - A kind of PE pipe hot melt welding method - Google Patents
A kind of PE pipe hot melt welding method Download PDFInfo
- Publication number
- CN109016526A CN109016526A CN201810963072.4A CN201810963072A CN109016526A CN 109016526 A CN109016526 A CN 109016526A CN 201810963072 A CN201810963072 A CN 201810963072A CN 109016526 A CN109016526 A CN 109016526A
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- Prior art keywords
- pipe
- welded
- welding
- pipes
- heating plate
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/18—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using heated tools
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
- B29C66/022—Mechanical pre-treatments, e.g. reshaping
- B29C66/0224—Mechanical pre-treatments, e.g. reshaping with removal of material
-
- 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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/52—Joining tubular articles, bars or profiled elements
- B29C66/522—Joining tubular articles
Abstract
The invention discloses a kind of PE pipes to heat welding method, and the temperature for mainly comprising the steps that step A: first holding two PE pipe clips to be welded, and preheating to the end to be welded of PE pipe, and preheat is 15 ~ 25 DEG C；Step B: and then pre- hot crimping is carried out by be welded end of the heating plate to PE pipe, heating plate is warming up to 200 DEG C in advance first, one end of heating plate is close to the end to be welded of PE pipe then, then the temperature of heating plate is increased and is maintained at 210 ± 10 DEG C；The end to be welded of PE pipe melts and pre- hot crimping occurs at this time；Heating plate is withdrawn from, then at the uniform velocity simultaneously constant pressure is docked by two PE pipe to be welded.The present invention executes welding by sequence of steps, avoids welding from rosin joint, not weld penetration, the phenomenon that weld bond is carbonized, welding quality is not high occur, guarantees the welding quality of PE pipe, extends the service life of PE pipe.
Description
Technical field
The invention belongs to the technical fields of PE pipe welding, and in particular to a kind of PE pipe hot melt welding method.
Background technique
PE pipe has medium density polyethylene pipe and high density polyethylene pipe.It is divided into SDR11 and SDR17.6 series according to wall thickness.
The former is suitable for conveying gaseous artificial coal gas, natural gas, liquefied petroleum gas, and the latter is mainly for delivery of natural gas.And steel pipe
Compare, construction technology is simple, there is certain flexibility, more important is preservative treatment is not used as, will save a large amount of process.
The wearability of HDPE occupies the hat of plastics in all engineering plastics, most noticeable.The higher material of molecular weight is just
It is more wear-resisting, even more than many metal materials (such as carbon steel, stainless steel, bronze).It is used under deep-etching and high abrasive conditions
Service life is 4-6 times of steel pipe, is 9 times of common polythene；And improve transfer efficiency 20%.It is fire-retardant, antistatic property is good,
Reach standard requirements.Underground service life is more than 20 years, and remarkable in economical benefits, shock resistance is wear-resisting, dual anti-significant effect.Cause
For its is wear-resisting, acid-proof is corrosion-resistant, high temperature resistant, it is high pressure resistant the features such as, gradually instead of traditional piping materials such as steel pipe, pipe of cements in city
Status on field, especially because this tubing is light-weight to facilitate installation and movement, it is the first choice of new material.However now for
The welding of the PE pipe phenomenon not high there are rosin joint, not weld penetration, weld bond carbonization, welding quality.
Summary of the invention
The purpose of the present invention is to provide a kind of PE pipes to heat welding method, by the preheating to PE pipe, so that heating
Plate when heated can uniformly melt PE pipe port, by the holding of heating temperature, so that PE pipe port is not in add
Not enough there is the weld bond carbonization phenomenon of not weld penetration or heating time too long appearance in hot temperature and time, so that the weld of PE pipe is not
It will appear rosin joint, guarantee the welding quality of PE pipe, extend the service life of PE pipe.
The present invention mainly passes through what following steps were realized: a kind of PE pipe hot melt welding method mainly includes following
Step:
Step A: holding two PE pipe clips to be welded first, and preheat to the end to be welded of PE pipe, and preheat
Temperature is 15 ~ 25 DEG C；In the lower situation of temperature, pre-add is carried out by port of the PE pipeline welding heating equipment to PE pipe
Heat guarantees being normally carried out to what port was melted for next step, avoids making the melting of port uneven in the case where low temperature,
Avoid the of low quality of PE pipe sweat soldering, the phenomenon that the service life of PE pipe is not grown after reduction welding；
Step B: and then pre- hot crimping is carried out by be welded end of the heating plate to PE pipe, heating plate is warming up to 200 in advance first
DEG C, then one end of heating plate is close to the end to be welded of PE pipe, then increase the temperature of heating plate and it is maintained at 210 ±
10℃；The end to be welded of PE pipe melts and pre- hot crimping occurs at this time；Heating plate is withdrawn from, it is then that two PE pipe to be welded is even
Speed and constant pressure docking.The temperature of heating plate is first risen to after 200 DEG C the end face that heating plate is close to PE pipe again by the present invention, to adding
Hot plate heats up, and guarantees the end face melting one of PE pipe to and every time need to be in advance with clean when heating heating plate each time
Cotton fabric, lens paper, absolute alcohol wiped clean guarantee the quality of welding；Make heating time root by being kept for 210 ± 10 DEG C
According to the constant wall thickness of PE pipe, and when height of flange reaches the predetermined value of thickness PE pipe, heating plate is withdrawn at once, is avoided the occurrence of
The phenomenon that not weld penetration or weld bond are carbonized, guarantees welding quality；By controlling the equipment of fixed PE pipe with uniform speed and constant
Pressure both ends PE pipe is crashed so that two PE pipes are docked, realize the welding of PE pipe, guarantee two PE pipes
Weld merges completely, avoid the PE material largely melted be pressed against inside and outside wall, guarantee welding quality.
The present invention is by the way that preheat and the preheating of heating sheet before the melting of PE pipe, the port of guarantee PE pipe being capable of temperature
Unanimously, guarantee that melting is uniform, it is ensured that the melted material mixing in docking of two PE pipes completely, guarantees the quality of welding.
In order to preferably realize the present invention, further, step A is mainly comprised the steps that
Step 101: by two PE pipes difference fixed clamp to be welded on sweating welder, and two PE pipes to be welded
The distance of welding ends additionally increases the stroke more than or equal to 20mm；By adding for two PE pipe stroke distances, two PE are avoided
Pipe has the gap of stroke when crashing, and guarantees that the melted material of two PE pipes can be thoroughly mixed, avoids the occurrence of welding rear surface
On see the very good of docking, but actually two interfacing part weldings not enough thoroughly, there is rosin joint, and not noticeable, therefore pass through
Reserving for stroke, improves welding quality, extends the service life of the PE pipe of welding；
Step 102: the welding surface of the PE of welding is carried out so that the welding surface of PE pipe is smooth by milling using milling cutter；Then using milling
Knife removes the oxide layer of the welding surface of PE pipe, then to carrying out oil removing around the welding surface of PE pipe；It is carried out in PE end surfaces pre-
It before heat fusing, needs to carry out milling to end face, guarantees the flatness of PE end surfaces, guarantee that the process of melting is uniform, and managed in PE
It can be uniformly mixed when docking, guarantee the quality of welding；By the way that end face and end face are nearby carried out oil removing, docked after guaranteeing melting
PE pipe can be uniformly mixed, avoid the occurrence of gap, guarantee the quality of subsequent welding.
In order to preferably realize the present invention, further, two PE pipes coaxial arrangement to be welded.The present invention passes through
The coaxial arrangement of two PE pipes to be welded, enable it is accurate when being docked, guarantee welding quality.
In order to preferably realize the present invention, further, the step 102 further include to two PE pipe millings to be welded and
Pre- after oil removing closes up step, and the pre- step of closing up mainly includes the following contents: by the to be welded two piece PE of fixed clamp
Pipe is closed up, solid by unscrewing if the magnitude of misalignment of the welding ends of two PE pipes to be welded is greater than the 10% of the wall thickness of PE pipe
Determine clamping device and adjust the straightness of two PE pipes to be welded, be then tightened clamping device；Then it adjusts to be welded
Two PE pipes welding ends gap be less than or equal to 0.3mm；It, need to be to the surface to be welded of two PE pipes if being unsatisfactory for clearance requirement
Again milling.The present invention guarantees to manage two PE of rear progress molten by being closed up in advance before melting two PE pipes
Melt smoothly completing for docking, avoids out-of-flatness or gap because of contact surface to be welded are excessive from causing melting uneven, guarantee PE pipe
The high quality of welding, prolongs the service life.
It further include step C further to preferably realize the present invention；
Step C: natural cooling during the at the uniform velocity simultaneously constant pressure docking of the PE of step B pipe starts hot melt after cooling 5-15min
Scraper in bonding machine is cut by weld-ring of the scraper to two PE pipes, makes 0.5 ~ 1.5mm of weld-ring height；Work as weld-ring
Naturally completely after cooling, the pressure that sweating welder applies PE pipe is unclamped.
The present invention passes through the PE pipe after crashing and keeps pressure constant, so that the height one for the twice weld-ring that weld occurs
It causes, size is identical, and weld-ring appearance is full smooth, and feels without foaming；After 5 ~ 15min after natural cooling, the PE material of melting
Material tentatively solidifies, by the setting of scraper, so that weld-ring height is 0.5 ~ 1.5mm, reduces influence of the weld-ring to PE pipe entirety；
The power that ability release apparatus applies after weld-ring natural cooling guarantees welding quality so that the PE material of melting is uniformly mixed.
In order to preferably realize the present invention, further, the unwelded end of two PE pipes to be welded carries out respectively
Blocking.The present invention is blocked by managing unwelded both ends in two PE, avoids PE pipe when welding cooling because wind passes through
Pipeline, prevent weld-ring is from complete natural cooling, so that the quality at weld-ring is inadequate, therefore, by blocking up to pipe ends
Plug, the cooling effect after avoiding welding cannot reach requirement, avoid the intensity for reducing pipeline.
Beneficial effects of the present invention:
(1) the step of present invention is by preheating PE pipe, heating, melt, crash sequence, so that heating plate when heated can be right
PE pipe port uniformly melts, so that PE pipe port is not in that acid extraction not weld penetration or heating time not enough occurs
The weld bond carbonization phenomenon of too long appearance guarantees the welding quality of PE pipe so that the weld of PE pipe is not in rosin joint, extends PE
The service life of pipe.
(2) present invention passes through adding for two PE pipe stroke distances, and two PE pipes is avoided to have the sky of stroke when crashing
Gap guarantees that the melted material of two PE pipes can be thoroughly mixed, so that seeing the very good of docking, but actually two in welding rear surface
Interfacing part welding not enough thoroughly, there is rosin joint, and not noticeable, therefore by the reserved of stroke, improve welding quality, extend
The service life of the PE pipe of welding；End face oil removing is processed and is carried out in the milling of PE end surfaces, guarantees the flatness of PE end surfaces, is protected
The process for demonstrate,proving melting is uniform, and can be uniformly mixed in the docking of PE pipe, guarantees the quality of welding；By the way that end face and end face is attached
It is close to carry out oil removing, guarantee that the PE pipe docked after melting can be uniformly mixed, avoids the occurrence of gap, guarantee the quality of subsequent welding.
(3) present invention is by the coaxial arrangements of two PE pipes to be welded, enables, guarantee accurate when being docked
The quality of welding.
(4) present invention guarantees to manage two PE of rear progress by being closed up in advance before melting two PE pipes
Butt-fusion smoothly completes, and avoids out-of-flatness or gap because of contact surface to be welded are excessive from causing melting uneven, guarantees PE
The high quality of pipe welding, prolongs the service life.
(5) present invention avoids PE pipe when welding cooling because of wind by being blocked at the both ends of unwelded PE pipe
By pipeline, prevent weld-ring is from complete natural cooling so that the quality at weld-ring is inadequate, therefore, by pipe ends into
Row blocking, the cooling effect after avoiding welding cannot reach requirement, avoid the intensity for reducing pipeline.
Specific embodiment
Embodiment 1:
A kind of PE pipe hot melt welding method, mainly comprises the steps that
Step A: holding two PE pipe clips to be welded first, and preheat to the end to be welded of PE pipe, and preheat
Temperature is 15 ~ 25 DEG C；In the lower situation of temperature, pre-add is carried out by port of the PE pipeline welding heating equipment to PE pipe
Heat guarantees being normally carried out to what port was melted for next step, avoids making the melting of port uneven in the case where low temperature,
Avoid the of low quality of PE pipe sweat soldering, the phenomenon that the service life of PE pipe is not grown after reduction welding；
Step B: and then pre- hot crimping is carried out by be welded end of the heating plate to PE pipe, heating plate is warming up to 200 in advance first
DEG C, then one end of heating plate is close to the end to be welded of PE pipe, then increase the temperature of heating plate and it is maintained at 210 ±
10℃；The end to be welded of PE pipe melts and pre- hot crimping occurs at this time；Heating plate is withdrawn from, it is then that two PE pipe to be welded is even
Speed and constant pressure docking.The temperature of heating plate is first risen to after 200 DEG C the end face that heating plate is close to PE pipe again by the present invention, to adding
Hot plate heats up, and guarantees the end face melting one of PE pipe to and every time need to be in advance with clean when heating heating plate each time
Cotton fabric, lens paper, absolute alcohol wiped clean guarantee the quality of welding；Make heating time root by being kept for 210 ± 10 DEG C
According to the constant wall thickness of PE pipe, and when height of flange reaches the predetermined value of thickness PE pipe, heating plate is withdrawn at once, is avoided the occurrence of
The phenomenon that not weld penetration or weld bond are carbonized, guarantees welding quality；By controlling the equipment of fixed PE pipe with uniform speed and constant
Pressure both ends PE pipe is crashed so that two PE pipes are docked, realize the welding of PE pipe, guarantee two PE pipes
Weld merges completely, avoid the PE material largely melted be pressed against inside and outside wall, guarantee welding quality.
The present invention is carried out by the sequence of step, ensure that the quality after the completion of the welding of PE pipe, avoids the occurrence of rosin joint, weldering
The not high phenomenon of impermeable, weld bond carbonization, welding quality.
Embodiment 2:
The present embodiment advanced optimizes on the basis of embodiment 1, and step A is mainly comprised the steps that
Step 101: by two PE pipes difference fixed clamp to be welded on sweating welder, and two PE pipes to be welded
The distance of welding ends additionally increases the stroke more than or equal to 20mm；By adding for two PE pipe stroke distances, two PE are avoided
Pipe has the gap of stroke when crashing, and guarantees that the melted material of two PE pipes can be thoroughly mixed, avoids the occurrence of welding rear surface
On see the very good of docking, but actually two interfacing part weldings not enough thoroughly, there is rosin joint, and not noticeable, therefore pass through
Reserving for stroke, improves welding quality, extends the service life of the PE pipe of welding；
Step 102: the welding surface of the PE of welding is carried out so that the welding surface of PE pipe is smooth by milling using milling cutter；Then using milling
Knife removes the oxide layer of the welding surface of PE pipe, then to carrying out oil removing around the welding surface of PE pipe；It is carried out in PE end surfaces pre-
It before heat fusing, needs to carry out milling to end face, guarantees the flatness of PE end surfaces, guarantee that the process of melting is uniform, and managed in PE
It can be uniformly mixed when docking, guarantee the quality of welding；By the way that end face and end face are nearby carried out oil removing, docked after guaranteeing melting
PE pipe can be uniformly mixed, avoid the occurrence of gap, guarantee the quality of subsequent welding.
It is non-uniform existing to there is melting by the preparation of welding preamble work by the present invention when subsequent PE end surfaces being avoided to weld
As guaranteeing the quality of welding, the PE pipe for improving welding has a longer life expectancy.
The other parts of the present embodiment are same as Example 1, and so it will not be repeated.
Embodiment 3:
The present embodiment advanced optimizes on the basis of embodiment, 2, two PE pipes coaxial arrangement to be welded；The step
Rapid 102 further include closing up step to pre- after two millings of PE pipe and oil removing to be welded, it is described it is pre- close up step mainly and include with
Lower content: the to be welded two piece PE pipe of fixed clamp is closed up, if the dislocation of the welding ends of two PE pipes to be welded
Amount is greater than the 10% of the wall thickness of PE pipe, then by unscrewing fixed clamping device and adjusting the straightness of two PE pipes to be welded, so
After be tightened clamping device；Then the gap for adjusting the welding ends of two PE pipes to be welded is less than or equal to 0.3mm；If discontented
Sufficient clearance requirement, need to surface to be welded milling again to two PE pipes.
The present invention enables accurate when being docked by the coaxial arrangements of two PE pipes to be welded, guarantees weldering
The quality connect；By being closed up in advance before melting to two PE pipes, guarantee two PE pipe butt-fusions to rear progress
Smoothly complete, avoid guaranteeing the welding of PE pipe because of the out-of-flatness of contact surface to be welded or gap is excessive causes melting uneven
High quality prolongs the service life.
The other parts of the present embodiment are identical as above-described embodiment 2, and so it will not be repeated.
Embodiment 4:
The present embodiment advanced optimizes on the basis of embodiment 2, further includes step C；
Step C: natural cooling during the at the uniform velocity simultaneously constant pressure docking of the PE of step B pipe starts hot melt after cooling 5-15min
Scraper in bonding machine is cut by weld-ring of the scraper to two PE pipes, makes 0.5 ~ 1.5mm of weld-ring height；Work as weld-ring
Naturally completely after cooling, the pressure that sweating welder applies PE pipe is unclamped；The unwelded end of two PE pipes to be welded
It is blocked respectively.
The present invention passes through the PE pipe after crashing and keeps pressure constant, so that the height one for the twice weld-ring that weld occurs
It causes, size is identical, and weld-ring appearance is full smooth, and feels without foaming；After 5 ~ 15min after natural cooling, the PE material of melting
Material tentatively solidifies, by the setting of scraper, so that weld-ring height is 0.5 ~ 1.5mm, reduces influence of the weld-ring to PE pipe entirety；
The power that ability release apparatus applies after weld-ring natural cooling guarantees welding quality so that the PE material of melting is uniformly mixed；Pass through
Unwelded both ends are managed in two PE to be blocked, and avoid PE pipe when welding cooling because wind is by pipeline, so that weld-ring is not
The complete natural cooling of energy, so that the quality at weld-ring is inadequate, therefore, by blocking to pipe ends, after avoiding welding
Cooling effect cannot reach requirement, avoid the intensity for reducing pipeline.
The other parts of the present embodiment are same as Example 2, and so it will not be repeated.
The above is only presently preferred embodiments of the present invention, not does limitation in any form to the present invention, it is all according to
According to technical spirit any simple modification to the above embodiments of the invention, equivalent variations, protection of the invention is each fallen within
Within the scope of.
Claims (6)
1. a kind of PE pipe heats welding method, which is characterized in that mainly comprise the steps that
Step A: holding two PE pipe clips to be welded first, and preheat to the end to be welded of PE pipe, and preheat
Temperature is 15 ~ 25 DEG C；
Step B: and then pre- hot crimping is carried out by be welded end of the heating plate to PE pipe, heating plate is warming up to 200 in advance first
DEG C, then one end of heating plate is close to the end to be welded of PE pipe, then increase the temperature of heating plate and it is maintained at 210 ±
10℃；The end to be welded of PE pipe melts and pre- hot crimping occurs at this time；Heating plate is withdrawn from, it is then that two PE pipe to be welded is even
Speed and constant pressure docking.
2. a kind of PE pipe according to claim 1 heats welding method, which is characterized in that step A mainly includes following
Step:
Step 101: by two PE pipes difference fixed clamp to be welded on sweating welder, and two PE pipes to be welded
The distance of welding ends additionally increases the stroke more than or equal to 20mm；
Step 102: the welding surface of the PE of welding is carried out so that the welding surface of PE pipe is smooth by milling using milling cutter；Then using milling
Knife removes the oxide layer of the welding surface of PE pipe, then to carrying out oil removing around the welding surface of PE pipe.
3. a kind of PE pipe according to claim 2 heats welding method, which is characterized in that two PE to be welded
Pipe coaxial arrangement.
4. a kind of PE pipe according to claim 2 heats welding method, which is characterized in that the step 102 further includes
Step is closed up to pre- after two millings of PE pipe and oil removing to be welded, the pre- step of closing up mainly includes the following contents: will be consolidated
The to be welded two piece PE pipe that clamp is held is closed up, if the magnitude of misalignment of the welding ends of two PE pipes to be welded is greater than PE pipe
The 10% of wall thickness, then by unscrewing fixed clamping device and adjusting the straightness of two PE pipes to be welded, be then tightened folder
Hold device；Then the gap for adjusting the welding ends of two PE pipes to be welded is less than or equal to 0.3mm；If being unsatisfactory for clearance requirement,
It need to surface to be welded milling again to two PE pipes.
5. a kind of PE pipe according to claim 1 heats welding method, which is characterized in that further include step C；
Step C: natural cooling during the at the uniform velocity simultaneously constant pressure docking of the PE of step B pipe starts hot melt after cooling 5-15min
Scraper in bonding machine is cut by weld-ring of the scraper to two PE pipes, makes 0.5 ~ 1.5mm of weld-ring height；Work as weld-ring
Naturally completely after cooling, the pressure that sweating welder applies PE pipe is unclamped.
6. a kind of PE pipe according to claim 5 heats welding method, which is characterized in that two PE to be welded
The unwelded end of pipe is blocked respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810963072.4A CN109016526A (en) | 2018-08-22 | 2018-08-22 | A kind of PE pipe hot melt welding method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810963072.4A CN109016526A (en) | 2018-08-22 | 2018-08-22 | A kind of PE pipe hot melt welding method |
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| CN109016526A true CN109016526A (en) | 2018-12-18 |
Family
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| CN201810963072.4A Pending CN109016526A (en) | 2018-08-22 | 2018-08-22 | A kind of PE pipe hot melt welding method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110107759A (en) * | 2019-05-14 | 2019-08-09 | 云南联塑科技发展有限公司 | A kind of ultrahigh molecular weight polyethylene tubing heat-melting butt-joint method |
| CN110170218A (en) * | 2019-04-28 | 2019-08-27 | 中建八局第二建设有限公司 | A kind of high-altitude depositing dust spraying system green construction method |
| CN112454915A (en) * | 2019-09-09 | 2021-03-09 | 上海亚大塑料制品有限公司 | Butt welding method for polyethylene-coated pipelines |
| CN112848329A (en) * | 2020-12-24 | 2021-05-28 | 天津京通管道科技股份有限公司 | Connecting method of composite pipes |
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| CN102486246A (en) * | 2010-12-06 | 2012-06-06 | 上海伙隆实业有限公司 | Polyethylene pipeline hot-melt conjunction construction method |
| CN102814980A (en) * | 2011-06-10 | 2012-12-12 | 泰州雅美雨和新材料有限公司 | Electric melting and hot melting connection method for ultra-high molecular weight polyethylene and steel wire gauze framework composite tube |
| CN103737915A (en) * | 2013-12-11 | 2014-04-23 | 甘肃大禹节水集团股份有限公司 | Quick welding process of PE (polyethylene) hot melt pipe fittings |
| CN104260334A (en) * | 2014-07-15 | 2015-01-07 | 宁国市东兴实业有限公司 | Hot-melt docking method for PE pipes |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102486246A (en) * | 2010-12-06 | 2012-06-06 | 上海伙隆实业有限公司 | Polyethylene pipeline hot-melt conjunction construction method |
| CN102814980A (en) * | 2011-06-10 | 2012-12-12 | 泰州雅美雨和新材料有限公司 | Electric melting and hot melting connection method for ultra-high molecular weight polyethylene and steel wire gauze framework composite tube |
| CN103737915A (en) * | 2013-12-11 | 2014-04-23 | 甘肃大禹节水集团股份有限公司 | Quick welding process of PE (polyethylene) hot melt pipe fittings |
| CN104260334A (en) * | 2014-07-15 | 2015-01-07 | 宁国市东兴实业有限公司 | Hot-melt docking method for PE pipes |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110170218A (en) * | 2019-04-28 | 2019-08-27 | 中建八局第二建设有限公司 | A kind of high-altitude depositing dust spraying system green construction method |
| CN110107759A (en) * | 2019-05-14 | 2019-08-09 | 云南联塑科技发展有限公司 | A kind of ultrahigh molecular weight polyethylene tubing heat-melting butt-joint method |
| CN112454915A (en) * | 2019-09-09 | 2021-03-09 | 上海亚大塑料制品有限公司 | Butt welding method for polyethylene-coated pipelines |
| CN112848329A (en) * | 2020-12-24 | 2021-05-28 | 天津京通管道科技股份有限公司 | Connecting method of composite pipes |
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Application publication date: 20181218 |
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