CN201615293U - Composite plastic pipe with wound steel wire and reinforced socket - Google Patents

Composite plastic pipe with wound steel wire and reinforced socket Download PDF

Info

Publication number
CN201615293U
CN201615293U CN2010201264748U CN201020126474U CN201615293U CN 201615293 U CN201615293 U CN 201615293U CN 2010201264748 U CN2010201264748 U CN 2010201264748U CN 201020126474 U CN201020126474 U CN 201020126474U CN 201615293 U CN201615293 U CN 201615293U
Authority
CN
China
Prior art keywords
steel wire
wall
composite plastic
plastic pipe
around
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.)
Expired - Fee Related
Application number
CN2010201264748U
Other languages
Chinese (zh)
Inventor
肖和飞
王德清
龙柳媛
罗安民
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HUNAN ZHENHUI PIPE CO Ltd
Original Assignee
HUNAN ZHENHUI PIPE CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by HUNAN ZHENHUI PIPE CO Ltd filed Critical HUNAN ZHENHUI PIPE CO Ltd
Priority to CN2010201264748U priority Critical patent/CN201615293U/en
Application granted granted Critical
Publication of CN201615293U publication Critical patent/CN201615293U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Landscapes

  • Rigid Pipes And Flexible Pipes (AREA)

Abstract

The utility model discloses a composite plastic pipe with wound steel wire and reinforced socket. . The technical scheme is as follows: a pipe wall with the socket end with the inner diameter being L in length is a thickened reinforced wall; a pipe wall far from the socket end with the outer diameter being M in length is a steel wire reinforced wall; the composite plastic pipe comprises a gluing layer, identifications and an anti-corrosion layer; the wall thickness S, the diameter phi and the outer diameter D are set according to a corresponding ratio; a mixed material of plastic and resin is used as the raw material; and products are produced under the synchronous control of a drying machine, a extruding machine, a die head, a die, a vacuum tank, a spraying tank, a wire winding machine, a high-frequency machine, a traction machine, a cutting machine and other apparatus. The composite plastic pipe overcomes the deficiencies that as for the existing pipe, the axial rigidity influences the axial flexibility, land subsidence resistance, tension resistance of the welding part of sockets, and the strength and rigidity of section of butting part of the pipe sockets do not meet the requirement of bearing pressure in the pipes due to the non-roundness of the butting part of sockets when electric melting pipes are welded, and the like; and the composite plastic pipe is suitable for being used as a connecting pipe in water delivery engineering and gas transmission engineering, and is especially applicable to reinforcement of pipe wall and thickening of sockets of PE, PVC-U, PVC-M and the like.

Description

Steel wire around with socket reinforced composite plastic pipe
Technical field
The utility model relate to steel wire around with socket reinforced composite plastic pipe.
Background technique
The processing method that existing commercially available plastic tube has generally all adopted netted enhancing of steel wire or the two-way winding of steel wire to strengthen, the plastic tube of crossing through this disposal methods, be characterized in that axial rigidity is better, but influenced axial ductility because of the enhancing of its axial rigidity, anti-geology sinking, the decline of bellmouth weld pull resistance; They are two years old, tubing through the processing of aforementioned processing method, the connection of its two tube faucet all is to adopt the electric melting pipe fittings welding, during welding because of the temperature height, two kinds of materials are that the different generations with the thermal expansion coefficient of plastics of steel wire separate, in addition, mutually laterally moving of two bellmouth tube walls increases non-" circularity " of tubing bellmouth joint with dislocation and is difficult to assurance and docks quality during welding, and " circularity " is that semidiameter is two concentric circular regions of a certain numerical value on the arbitrary normal section of bellmouth joint; Especially to the tubing of pressure rating lower (being that tube wall is thinner), can more be difficult to guarantee the butt joint quality because of non-" circularity " of tubing bellmouth joint; Its consequence can make tubing bellmouth joint cross-sectional strength and rigidity all can not carry the pipe internal pressure and cause tube material and tube wall bulging, distortion, so that cracking, cause pipe leakage gas leakage, cause water supply, air feed, liquid-supplying system difficult in maintenance, the serious and gas leakage of resources loss causes the pollution to environment; Its three: through the tubing of netted enhancing disposal methods, its reticular body is 1/2nd places that are embedded in pipe thickness, it is many to cause the cost of production and the cost of raw material to increase: its four: the tubing that strengthens disposal methods through two-way winding, it twines body is to be preset at whole root canal wall outside, bring the difficulty of I﹠M for the bellmouth joint, and be abound with to twine to know from experience and cause cost of production and cost of material all higher.
Summary of the invention
At above-mentioned situation, the purpose of this utility model be to provide a kind of steel wire around with socket reinforced composite plastic pipe, it has simple in structure, and linkage function increases, bellmouth butt joint quality height, the bellmouth cross-sectional strength is big, good rigidly, no fluid resistance, nothing leak hidden danger, No Assets waste, are convenient to engineering construction and system maintenance, safe in utilization, reliable, be easy to penetration and promotion.
To achieve these goals, a kind of steel wire around with socket reinforced composite plastic pipe, it comprises tube wall and bellmouth, the tube wall of the long L of its bellmouth inner end diameter strengthens wall for thickening, tube wall apart from the long M of bellmouth outer end diameter is that steel wire strengthens wall, steel wire strengthens wall and comprises adhesive-layer, and adhesive-layer peripheral hardware sign, anticorrosive coat, steel wire strengthen wall wall thickness S and press mutual corresponding ratio setting with steel wire diameter φ with the tube wall outer diameter D.
For implementation structure optimization, its further step is: the mutual corresponding ratio that strengthens wall wall thickness S and steel wire diameter φ and tube wall outer diameter D in steel wire is S6.8~28.4mm ︰ φ 0.7~1.10mm ︰ D75~630mm or S6.2~26.7mm ︰ φ 0.7~1.1mm ︰ D75~630mm or S5.6~25.3mm ︰ φ 0.7~1.1mm ︰ D75~630mm or S5.0~23.8mm ︰ φ 0.7~1.1mm ︰ D75~630mm.The mutual corresponding ratio that strengthens wall wall thickness S and steel wire diameter φ and tube wall outer diameter D in steel wire is S5.5~22.4mm ︰ φ 0.7~1.1mm ︰ D110~630mm or S5.0~21.0mm ︰ φ 0.7~1.1mm ︰ D110~630mm.The mutual corresponding ratio that strengthens wall wall thickness S and steel wire diameter φ and tube wall outer diameter D in steel wire is S7.7~18.6mm ︰ φ 0.9~1.1mm ︰ D200~630mm.Strengthen the inner place of wall in thickening and establish transition zone W.The steel wire that strengthens in the wall in steel wire is a flat wire, and the steel wire spacing is 3-10mm.In steel wire strengthen steel wire in the wall be spiral around.In steel wire to strengthen steel wire in the wall be net like around.The ratio of path length L is 1 ︰ 2 in path length M and the tube wall outside tube wall.
In order to realize the product of comprehensive high-quality, its further step is: it makes raw material with the plastic resin mixed ingredients, simultaneously make product under the synchronization control of equipment such as dryer, extruder, die head, mould, vacuum box, spraying box, reeling machine, High-frequency machine, tractor, cutting machine, its operating procedure is as follows:
I, raw material drying processing-dryer;
II, plasticizing are puddled and are extruded-extruder;
III, the constant temperature output-die head of adjusting;
IV, vacuum sizing-mould, vacuum box;
V, the slow running of tube wall internal diameter thickening-tractor, vacuum box;
VI, tube wall internal diameter attenuate-tractor move fast, vacuum box;
VII, the slow running of tube wall internal diameter thickening-tractor, vacuum box;
VIII, spray, cooling-spraying box;
IX, steel wire are around-reeling machine;
X, heating-High-frequency machine;
XI, viscose glue-die head, mould, extruder;
XII, sign, anticorrosion covering-die head, mould, tag line machine, extruder;
X III, vacuum sizing-mould, vacuum box;
X IV, spray, cooling-spraying box;
X V, traction-tractor;
X VI, scale, cut-out-cutting machine.
The utility model mainly strengthens wall at the tube wall of the long L of its tube material and tube wall bellmouth inner end diameter for thickening, tube wall apart from the long M of bellmouth outer end diameter is that steel wire strengthens wall, steel wire strengthens wall and comprises adhesive-layer, adhesive-layer peripheral hardware sign, anticorrosive coat, steel wire strengthens wall wall thickness S and makes raw material with the tube wall outer diameter D by mutual corresponding ratio setting and employing plastic resin mixed ingredients with steel wire diameter φ, simultaneously in dryer, extruder, die head, mould, vacuum box, spraying box, reeling machine, High-frequency machine, tractor, make under the synchronization control of equipment such as cutting machine steel wire around with the technological scheme of socket reinforced composite plastic pipe, it has overcome the netted enhancing of existing employing steel wire or the two-way winding Enhancement Method of steel wire is handled the commercially available plastic tube of making, because of the enhancing of its axial rigidity has influenced axial ductility, anti-geology sinking, because of causing tubing bellmouth joint cross-sectional strength and rigidity all can not carry to manage internal pressure, non-" circularity " of tubing bellmouth joint causes the tube material and tube wall bulging during welding of the pull resistance of bellmouth weld and electric melting pipe fittings, distortion, so that cracking, cause pipe leakage gas leakage, cause water supply, air feed, liquid-supplying system is difficult in maintenance, and the serious and gas leakage of resources loss causes defectives such as the pollution of environment and higher cost of production and cost of material.
The beneficial effect that the utility model is produced compared to existing technology:
(a) adopt tube wall to be set to thickening enhancing wall at the long L of its tube material and tube wall bellmouth inner end diameter, tube wall apart from the long M of bellmouth outer end diameter is set to steel wire enhancing wall, and the thickening of steel wire and bellmouth end strengthens the setting that not only is connected mutually but also staggers mutually, make pipe wall thickness reach minimum around steel wire, improved the combination property of bellmouth end, thereby saved a large amount of tube wall materials, saved resource, significantly reduced the cost of material of product;
(b) because the tube material and tube wall external diameter is provided with around steel wire, strengthened the rigidity of tube material and tube wall, and tube material and tube wall is not yielding, anti-geology sinking performance significantly improves;
(c) the product linkage function increases, and makes the melting welding effect of electric melting pipe fittings welding method remarkable, and the bellmouth thickening strengthens, and conveniently installs, and the melting welding butt joint fast, is accurately constructed easily, and is easy to maintenance;
(d) product bellmouth butt joint quality height, the bellmouth thickening strengthens, and same " circularity " of the butt joint of two bellmouths obviously improves, the cross-sectional strength height of bellmouth joint, rigidity, toughness, insulating properties are all good, wear-resisting, corrosion-resistant, and no fluid resistance increases, long service life;
(e) product structure is simple, and preparation process is easy, need not drop into new main equipment, and cost of production is lower;
(f) product is safe in utilization, reliable, has eliminated leakage hidden danger, has saved energy resources, has improved systematic environment, and the cost performance excellence has vast market prospect and promotion potential;
(g) the utility model has enlarged the application area of plastic tubes such as PE, PVC-U, PVC-M.
The utility model is fit to do various water delivery engineerings, the connection tubing of gas transmission engineering; Be particularly suitable for doing the tube wall enhancing and bellmouth thickening of plastic tubes such as PE, PVC-U, PVC-M.
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.
Description of drawings
Fig. 1 is a sectional view of the present utility model.
Fig. 2 be steel wire of the present utility model around with the preparation process flow chart of socket reinforced composite plastic pipe.
Fig. 3 be steel wire of the present utility model around with wall thickness S, the steel wire diameter φ of socket reinforced composite plastic pipe, the mutual corresponding ratio data table of nominal outside diameter D.
Among the figure: 1, tube wall, 2, bellmouth, 3, thickening strengthens wall, 4, steel wire strengthens wall, 5, steel wire, 6, adhesive-layer, 7, anticorrosive coat, path length in the L-, the outer path length of M-, S-wall thickness, φ-diameter, D-external diameter, W-transition zone, K-spacing.
Embodiment
Referring to accompanying drawing, a kind of steel wire around with socket reinforced composite plastic pipe, it comprises tube wall 1 and bellmouth 2, the tube wall 1 of the long L of its bellmouth 2 inner end diameter strengthens wall 3 for thickening, tube wall 1 apart from the long M of bellmouth 2 outer end diameter strengthens wall 4 for steel wire, have comprehensive preferably in order to make around steel wire 5 two ends and bellmouth 2, identical performance, higher balance quality, more excellent butt joint hot molten characteristic, the ratio of outer path length M and interior path length L is provided with by 1 ︰ 2, steel wire strengthens wall 4 and comprises adhesive-layer 6, adhesive-layer 6 peripheral hardwares sign, anticorrosive coat 7, steel wire strengthen wall 4 wall thickness S and press mutual corresponding ratio setting with steel wire 5 diameter phi and tube wall 1 outer diameter D.
Shown in accompanying drawing, D-tube wall 1 nominal outside diameter (mm), S-tube wall 1 wall thickness (mm), φ-steel wire 5 diameters (mm), K-steel wire 5 spacings, L-bellmouth 2 inner end diameter long (mm), M-is apart from bellmouth 2 outer end diameter long (mm), and W-thickeies, subtracts book, addition thick transition area.
With reference to accompanying drawing, in order further to improve the combination property of tubing, improve the axial stiffness of tube material and tube wall, anti-geology sinking, the pull resistance of bellmouth weld, and the intensity of tubing, toughness, insulating properties, wear resistance, corrosion resistance etc.; For efficent use of resources and saving material, steel wire of the present utility model is around the mutual corresponding ratio data table setting of press Fig. 3 with wall thickness S, steel wire diameter φ, the nominal outside diameter D of socket reinforced composite plastic pipe,
The utility model provides wall thickness S, the steel wire diameter φ of several mode of executions, the mutual corresponding ratio data table of nominal outside diameter D, the value proportion of this table has: the mutual corresponding ratio that steel wire strengthens wall 4 wall thickness S and steel wire 5 diameter phi and tube wall 1 outer diameter D is S6.8~28.4mm ︰ φ 0.7~1.10mm ︰ D75~630mm or S6.2~26.7mm ︰ φ 0.7~1.1mm ︰ D75~630mm or S5.6~25.3mm ︰ φ 0.7~1.1mm ︰ D75~630mm or S5.0~23.8mm ︰ φ 0.7~1.1mm ︰ D75~630mm; The mutual corresponding ratio that steel wire strengthens wall 4 wall thickness S and steel wire 5 diameter phi and tube wall 1 outer diameter D is S5.5~22.4mm ︰ φ 0.7~1.1mm ︰ D110~630mm or S5.0~21.0mm ︰ φ 0.7~1.1mm ︰ D110~630mm; The mutual corresponding ratio that steel wire strengthens wall 4 wall thickness S and steel wire 5 diameter phi and tube wall 1 outer diameter D is S7.7~18.6mm ︰ φ 0.9~1.1mm ︰ D200~630mm.
When influencing passing through of fluid for the tube wall 1 that solves the long L of bellmouth 2 inner end diameter because of thickening, take to strengthen in thickening that wall 3 inner places are provided with thickening, subtract book, addition thick transition area W, it is zero that fluid resistance is reduced to.
In order to improve the adhesive strength of steel wire 5 and tube wall 1, steel wire 5 adopts flat wire, the surface of contact of flat wire and tube wall 1 increases, be easy to form firm adhesive-layer 6 and anticorrosive coat 7, and steel wire 5 can be selected thinner making through flattening for use, for adapting to the needs of different pressures grade in the pipe, its steel wire 5 generally adopt 3-10mm more suitable around spacing K, steel wire 5 be 3mm around spacing K the time, suitable pressure rating is 1.6MPa, steel wire 5 be 10mm around spacing K the time, suitable pressure rating is 1.25MPa; Steel wire 5 and tube wall 1 around mode mainly contain spiral around, net like around.
Referring to accompanying drawing, a kind of steel wire around with the making of socket reinforced composite plastic pipe, at first build up production line by the technological process of establishment, this production line is prepared equipment such as dryer, extruder, die head, mould, vacuum box, spraying box, reeling machine, High-frequency machine, tractor, cutting machine and dosing machine according to operation, make raw material with the plastic resin mixed ingredients simultaneously, make product under the synchronization control of aforementioned each equipment, its operating procedure is as follows:
I, startup dryer, the dosing machine confected materials is carried out drying process;
II, through extruder dried raw material is carried out mixing fusing, i.e. plasticizing is puddled and is extruded;
III, adjust through extruder and die head constant temperature, pipe and output promptly are extruded to shape;
IV, determine the product external diameter through the absorption of vacuum box and mould;
V, travel at the uniform speed at a slow speed in vacuum box, make the thickening of tube wall 1 internal diameter through tractor;
VI, travel at the uniform speed fast in vacuum box, make tube wall 1 internal diameter subtract book through tractor;
VII, travel at the uniform speed at a slow speed in vacuum box, make the thickening of tube wall 1 internal diameter through tractor;
VIII, through spraying box spray, cooling;
IX, steel wire 5 is surrounded on tube wall 1 external diameter with reeling machine;
X, will be surrounded on the steel wire 5 of tube wall 1 external diameter and tube wall 1 heating through High-frequency machine, heating-up temperature is 180 ℃-220 ℃;
XI, carry out viscose glue constant temperature through die head, mould, extruder and adjust, adhesive-layer and output promptly are extruded to shape;
XII, through die head, mould, tag line machine, extruder identify, anticorrosion covering, and the output identification that is extruded to shape, anticorrosive coat;
The X III, determine the product external diameter through vacuum box and mould, and cooling at random;
The X IV, through spraying box spray, cooling;
The X V, continue operation forward by tractor traction;
The X VI, by cutting machine automatically control determine size and cut into the pipe material product of required model length.
Above-mentioned thickening, subtract book, thickening and steel wire around control principle be: tube wall 1 through uniformly thicken, gradually attenuate, evenly attenuate, gradually after the operations such as thickening, uniformly thicken, the tube wall 1 that has become path length L in bellmouth 2 two end part that adhere to specification strengthens wall 3 for thickening, tube wall 1 apart from path length M outside bellmouth 2 two end part strengthens wall 4 for steel wire, carry out fixed ruler cutting through cutting machine, finish through the discharging of discharging frame again, make its steel wire that becomes commercially available gage length size around with socket reinforced composite plastic pipe.

Claims (9)

  1. A steel wire around with socket reinforced composite plastic pipe, it comprises tube wall (1) and bellmouth (2), the tube wall (1) that it is characterized in that the long L of bellmouth (2) inner end diameter strengthens wall (3) for thickening, tube wall (1) apart from the long M of bellmouth (2) outer end diameter strengthens wall (4) for steel wire, steel wire strengthens wall (4) and comprises adhesive-layer (6), adhesive-layer (6) peripheral hardware sign, anticorrosive coat (7), steel wire strengthen wall (4) wall thickness S and press mutual corresponding ratio setting with steel wire (5) diameter phi and tube wall (1) outer diameter D.
  2. 2. steel wire according to claim 1 around with socket reinforced composite plastic pipe, it is characterized in that the mutual corresponding ratio that steel wire strengthens wall (4) wall thickness S and steel wire (5) diameter phi and tube wall (1) outer diameter D is S6.8~28.4mm ︰ φ 0.7~1.10mm ︰ D75~630mm or S6.2~26.7mm ︰ φ 0.7~1.1mm ︰ D75~630mm or S5.6~25.3mm ︰ φ 0.7~1.1mm ︰ D75~630mm or S5.0~23.8mm ︰ φ 0.7~1.1mm ︰ D75~630mm.
  3. 3. steel wire according to claim 1 around with socket reinforced composite plastic pipe, it is characterized in that the mutual corresponding ratio that steel wire strengthens wall (4) wall thickness S and steel wire (5) diameter phi and tube wall (1) outer diameter D is S5.5~22.4mm ︰ φ 0.7~1.1mm ︰ D110~630mm or S5.0~21.0mm ︰ φ 0.7~1.1mm ︰ D110~630mm.
  4. 4. steel wire according to claim 1 around with socket reinforced composite plastic pipe, it is characterized in that the mutual corresponding ratio that steel wire strengthens wall (4) wall thickness S and steel wire (5) diameter phi and tube wall (1) outer diameter D is S7.7~18.6mm ︰ φ 0.9~1.1mm ︰ D200~630mm.
  5. 5. steel wire according to claim 1 around with socket reinforced composite plastic pipe, it is characterized in that thickening strengthens the inner place of wall (3) and establishes transition zone W.
  6. 6. steel wire according to claim 1 around with socket reinforced composite plastic pipe, it is characterized in that the steel wire (5) that steel wire strengthens in the wall (4) is a flat wire, steel wire (5) spacing is 3-10mm.
  7. 7. steel wire according to claim 1 around with socket reinforced composite plastic pipe, it is characterized in that steel wire strengthen in the wall (4) steel wire (5) for spiral around.
  8. 8. steel wire according to claim 1 around with socket reinforced composite plastic pipe, it is characterized in that steel wire strengthen in the wall (4) steel wire (5) for net like around.
  9. 9. steel wire according to claim 1 around with socket reinforced composite plastic pipe, it is characterized in that the ratio of outer path length M of tube wall (1) and the interior path length L of tube wall (1) is 1 ︰ 2.
CN2010201264748U 2010-03-10 2010-03-10 Composite plastic pipe with wound steel wire and reinforced socket Expired - Fee Related CN201615293U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010201264748U CN201615293U (en) 2010-03-10 2010-03-10 Composite plastic pipe with wound steel wire and reinforced socket

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010201264748U CN201615293U (en) 2010-03-10 2010-03-10 Composite plastic pipe with wound steel wire and reinforced socket

Publications (1)

Publication Number Publication Date
CN201615293U true CN201615293U (en) 2010-10-27

Family

ID=43001662

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010201264748U Expired - Fee Related CN201615293U (en) 2010-03-10 2010-03-10 Composite plastic pipe with wound steel wire and reinforced socket

Country Status (1)

Country Link
CN (1) CN201615293U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101788085A (en) * 2010-03-10 2010-07-28 湖南振辉管业有限公司 Composite type plastic pipe with wound netting wire and strengthened bell mouth and manufacturing process thereof
CN102418814A (en) * 2011-08-11 2012-04-18 浙江世进水控股份有限公司 Flexible composite pipe product and marking method
CN103950216A (en) * 2014-04-29 2014-07-30 赵虎 PVC (polyvinyl chloride) colored strip steel wire reinforced hose production device and manufacturing method thereof
CN105546231A (en) * 2016-02-29 2016-05-04 张生兰 High-strength weather-resisting composite plastic pipe

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101788085A (en) * 2010-03-10 2010-07-28 湖南振辉管业有限公司 Composite type plastic pipe with wound netting wire and strengthened bell mouth and manufacturing process thereof
CN101788085B (en) * 2010-03-10 2011-06-15 湖南振辉管业有限公司 Composite type plastic pipe with wound netting wire and strengthened bell mouth and manufacturing process thereof
CN102418814A (en) * 2011-08-11 2012-04-18 浙江世进水控股份有限公司 Flexible composite pipe product and marking method
CN103950216A (en) * 2014-04-29 2014-07-30 赵虎 PVC (polyvinyl chloride) colored strip steel wire reinforced hose production device and manufacturing method thereof
CN103950216B (en) * 2014-04-29 2016-06-29 赵虎 A kind of PVC colour bar steel wire reinforcement flexible pipe process units and preparation method thereof
CN105546231A (en) * 2016-02-29 2016-05-04 张生兰 High-strength weather-resisting composite plastic pipe

Similar Documents

Publication Publication Date Title
CN100380040C (en) Coextruding heat winding structure wall pipe, processing method and method
CN201615293U (en) Composite plastic pipe with wound steel wire and reinforced socket
CN109228390A (en) A kind of production method of polyethylene dual waves enhancing spiral winding pipe
CN210651966U (en) Plastic-coated double-flat-wall inner rib steel belt reinforced winding pipe production device
CN203223656U (en) Steel-plastic composite winding structure wall pipe
CN101788084B (en) Socket reinforced composite plastic pipe and manufacturing process thereof
CN208687143U (en) A kind of large-bore plastics pressure pipe, plastics reinforced pipe and plastics duct piece forming die
CN104385616A (en) Method for preparing coalbed gas pipeline by adopting double-angle alternating winding technology
CN207657131U (en) A kind of preparation facilities of non-penetrating fado layer continuous hose
CN102441997A (en) Co-extrusion thermal winding structure wall tubular product and processing method and mould thereof
CN103335173B (en) Heavy caliber low pressure feed water polyethylene silk screen entwining tube and production method and manufacturing mechanism
CN101462131B (en) Method for manufacturing heat exchanger coil
CN104118122A (en) Production technology for large-diameter polyethylene winding-structure pressure pipe
CN101788085B (en) Composite type plastic pipe with wound netting wire and strengthened bell mouth and manufacturing process thereof
CN101881356B (en) Steel wire enhanced bell and spigot composite plastic tube and fabrication process thereof
CN102620064B (en) Full steel framework enhanced plug type composite pipe
CN103075582B (en) Large-caliber steel-plate net riveting plastic composite pressure pipe and production method
CN201715118U (en) Steel-wire enhanced socket composite plastic tube
CN209141481U (en) A kind of process units of polyethylene dual waves enhancing spiral winding pipe
CN204358272U (en) Plastic helical bellow
JP6578054B2 (en) Injection stack molding equipment for polymer piping
CN201836547U (en) Socket-enhanced composite plastic pipe
CN100441930C (en) Steel pipe skeleton pipe winded with reinforced plastic and processing method
CN106273334B (en) A kind of crowded pipe mold for reinforcing glass fiber tubing intensity
CN205806716U (en) The box-like steel-plastics composite pipe of Jinsuo in a kind of

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20101027

Termination date: 20180310

CF01 Termination of patent right due to non-payment of annual fee