CN104476787A - Krah pipe continuous-production device and production technology - Google Patents
Krah pipe continuous-production device and production technology Download PDFInfo
- Publication number
- CN104476787A CN104476787A CN201410578366.7A CN201410578366A CN104476787A CN 104476787 A CN104476787 A CN 104476787A CN 201410578366 A CN201410578366 A CN 201410578366A CN 104476787 A CN104476787 A CN 104476787A
- Authority
- CN
- China
- Prior art keywords
- pipe
- flat rubber
- mould
- rubber belting
- winding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a Krah pipe continuous-production device. The Krah pipe continuous-production device comprises a main machine, an auxiliary device, a forming machine, a flat belt mold, a circular pipe mold, a cooling bench, a cooling water nozzle and a winding mold. The Krah pipe continuous-production technology comprises the following steps of material stirring, heating extrusion, flat belt winding, circular pipe winding, cooling molding, fixed length cutting, bearing, slot winding, cooling molding, and examination and warehousing. The Krah pipe continuous-production device realizes pipe molding by the Krah pipe continuous-production device according to a steel band winding principle, a polyethylene raw material is subjected to heating melt extrusion by the main machine to produce a flat band and a circular pipe (with a PP tube in the interior), the flat band and the circular pipe are continuously winded and molded on the winding mold, and the product is cooled by water or combination of water and air. The Krah pipe continuous-production technology is free of natural gas in production, reduces a cost, realizes continuous production, and has a high yield and a reliable product mass ratio.
Description
Technical field
The present invention relates to the production equipment of a kind of carat of pipe, particularly relate to continuous production device and the production technology of a kind of carat of pipe.
Background technology
Along with Some Domestic plastics blowdown compound pipeline complex pipeline exists a lot of drawback, as plastics and steel compound municipal pipeline are used for blowdown, or the projects such as draining, service life reduces greatly, particularly coastal cities, water-band has salt, the place that corrosivity is very strong, some projects use the municipal pipeline product 3-5 of plastics and steel compound just to start to cave in, because, steel and plastics compound can not combine together all the time, pass through temperature deviation, the plastics that expand with heat and contract with cold are easy to same metal delamination, encountering the corrosion such as acid-alkali salt causes metallicity to decline, cause the accidents such as municipal pipeline product landslide.The development of carat pipe was doubled and redoubled in recent years, captured about 10% of blow-off line market in coastal cities.Carat pipe belongs to pure molding product, has the features such as corrosion-resistant, ring stiffness is high, production bore is large, connection sealing is superior.But because engineering is large by pipe amount, method of attachment variation, has electric smelting connection, the connection of cushion rubber socket joint.With plastic sewer pipe road of the same trade product as high expensive compared with steel-belt-pipe, hollow wound pipe, plastic-steel spirally-wound pipe, two flat walls winding pipe etc., can not work continuously during production, yield poorly, processing cost is high.
Summary of the invention
The object of the present invention is to provide continuous production device and the production technology of a kind of carat of pipe, thus solve Problems existing in background technology.
Technical problem solved by the invention realizes by the following technical solutions:
The continuous production device of a kind of carat of pipe, comprise main frame, subsidiary engine, forming machine, flat rubber belting mould, pipe mould, cooling bench, cooling water nozzle, Wound Dies, described main-machine screw is fed in raw material and is extruded into the flat rubber belting that flat rubber belting mould molding reaches met requirements for pipes, directly forming machine is wound to by leash, described subsidiary engine screw rod is reinforced is extruded into pipe mould molding pipe, directly mutually bonding with extruding flat rubber belting by leash, described forming machine cylinder is connected by fixed disk with Wound Dies, described flat rubber belting mould is arranged at the below of Wound Dies, described pipe mould is arranged at the top of Wound Dies, cooling bench is provided with below the side Wound Dies of described forming machine, described cooling bench is provided with some cooling water nozzles.
The distance of described pipe mould and Wound Dies is 0.5-0.8 rice.
A continuous production technology for carat pipe, specifically comprises the steps:
(1) spice: get polyethylene and black masterbatch that mass ratio is 50:1, pours blender into and carries out spice in blended 15 minutes;
(2) add hot-extrudable: adopt vacuum feeding to suck the hopper of main frame, the technological temperature of main frame is set to 165 DEG C-195 DEG C, starts main frame, increases gradually with the speed of increase per minute 5 turns, starts to add hot-extrudable;
(3) flat rubber belting is wound around: when after host-initiated, when expecting to extrude from flat rubber belting mould, and flat rubber belting is directly drawn to more than on Wound Dies, continuous winding 5 encloses, then adjustment forming machine required product pitch;
(4) pipe is wound around: start subsidiary engine, increase gradually, pipe is extruded from pipe mould with the speed of increase per minute 5 turns, is wound around, and pipe is pressed into flat rubber belting form with on hand traction pipe to Wound Dies, and the flat rubber belting with main frame continues winding 3 and encloses;
(5) cooling forming: open cooling water nozzle, the position before pipe is taked air-cooled, and PP reinforced pipe is delivered to pipe mould, PP reinforced pipe is wrapped on Wound Dies by pipe mould and carries out continuous winding;
(6) fixed length cutting: position-sensing switch is set, when product reaches the length of needs, when product encounters inductive switch, automatically start cutting machine carry out cutting both shaped article, product can be set to 6-12 rice according to length;
(7) hold, socket is wound around: after formed product, move on to the position of bellmouth wrapping machine and socket wrapping machine, temperature controls at 165 DEG C-180 DEG C, and speeds control turns at 50-60 per minute, then opens socket wrapping machine and bellmouth wrapping machine carries out extruding the mouth that is intertwined and connected;
(8) cooling forming: stop bellmouth wrapping machine and socket wrapping machine after described winding bell and spigot reaches standard-required, the demoulding after 8 minutes to be cooled, then carry out demoulding finishing;
(9) inspection warehouse-in: inspection product length, hold, socket size, product physical property, put in storage.
The present invention has following beneficial effect:
It is shaping that the present invention uses continuous production device to adopt steel-belt-pipe to be wound around principle, polyethylene raw material are extruded flat rubber belting, pipe (inside having PP to manage) by main frame heating melting, continuous-winding forming on Wound Dies, its cooling adopts water-cooled or air-cooledly to combine, the product produced does not need gas-firing, reduces cost, can continuous seepage operation, output is high, and product quality is than reliable.
Accompanying drawing explanation
Fig. 1 is the structural representation of production equipment of the present invention;
Fig. 2 is the operation principle schematic diagram that the present invention holds, socket is wound around;
Fig. 3 is production technological process of the present invention.
Shown in Fig. 1 and Fig. 2: 1, main frame; 2, subsidiary engine; 3, forming machine; 4 flat rubber belting moulds; 5, pipe mould; 6, cooling bench; 7, cooling water nozzle; 8, Wound Dies; 9, PP reinforced pipe; 10, socket wrapping machine; 11, bellmouth wrapping machine; 12 carats of pipes.
Detailed description of the invention
The technological means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the present invention further.
A continuous production device for carat pipe, comprises main frame 1, subsidiary engine 2, forming machine 3, flat rubber belting mould 4, pipe mould 5, cooling bench 6, cooling water nozzle 7, Wound Dies 8, described main frame 1 screw rod feeds in raw material and is extruded into the shaping flat rubber belting reaching met requirements for pipes of flat rubber belting mould 4, forming machine 3 is directly wound to by leash, described subsidiary engine 2 screw rod is reinforced is extruded into the shaping pipe of pipe mould 5, with leash directly with extrude flat rubber belting and be connected, described forming machine 3 cylinder is connected by fixed disk with Wound Dies 8, described flat rubber belting mould 4 is arranged at the below of Wound Dies 8, described pipe mould 5 is arranged at the top of Wound Dies 8, cooling bench 6 is provided with below the side Wound Dies 8 of described forming machine 3, described cooling bench 6 is provided with some cooling water nozzles 7.
Described pipe mould 5 is 0.5-0.8 rice with the distance of Wound Dies 8.
Embodiment 1:
A continuous production technology for carat pipe, specifically comprises the steps:
(1) spice: get 100 kilograms of polyethylene and 2 kilograms of black masterbatch, pours blender into and carries out spice in blended 15 minutes;
(2) add hot-extrudable: adopt vacuum feeding to suck the hopper of main frame 1, the technological temperature of main frame 1 is set to 165 DEG C, starts main frame 1, increases gradually with the speed of increase per minute 5 turns, starts to add hot-extrudable;
(3) flat rubber belting is wound around: after main frame 1 starts, when expecting to extrude from flat rubber belting mould 4, and flat rubber belting is directly drawn to more than on Wound Dies 8, continuous winding 5 encloses, then adjustment forming machine 3 required product pitch;
(4) pipe is wound around: start subsidiary engine 2, increase gradually, pipe is extruded from pipe mould 5 with the speed of increase per minute 5 turns, is wound around, and pipe is pressed into flat rubber belting form with hand traction pipe to Wound Dies 8, and the flat rubber belting with main frame 1 continues winding 3 and encloses;
(5) cooling forming: open cooling water nozzle 7, the position before pipe is taked air-cooled, and PP reinforced pipe 9 is delivered to pipe mould 5, PP reinforced pipe is wrapped on Wound Dies 8 by pipe mould 5 and carries out continuous winding;
(6) fixed length cutting: position-sensing switch is set, when product reaches the length of needs, when product encounters inductive switch, automatically start cutting machine carry out cutting both shaped article, product is set to 6 meters;
(7) hold, socket is wound around: after formed product, move on to the position of bellmouth wrapping machine 11 and socket wrapping machine 10, temperature controls at 165 DEG C, and speeds control at 50 turns per minute, then opens socket wrapping machine 10 and bellmouth wrapping machine 11 carries out extruding the mouth that is intertwined and connected;
(8) cooling forming: stop bellmouth wrapping machine 11 and socket wrapping machine 10 after described winding bell and spigot reaches standard-required, the demoulding after 8 minutes to be cooled, then carry out demoulding finishing;
(9) inspection warehouse-in: inspection product length, hold, socket size, product physical property, put in storage.
Embodiment 2:
A continuous production technology for carat pipe, specifically comprises the steps:
(1) spice: get 200 kilograms of polyethylene and 4 kilograms of black masterbatch, pours blender into and carries out spice in blended 15 minutes;
(2) add hot-extrudable: adopt vacuum feeding to suck the hopper of main frame 1, the technological temperature of main frame 1 is set to 180 DEG C, starts main frame 1, increases gradually with the speed of increase per minute 5 turns, starts to add hot-extrudable;
(3) flat rubber belting is wound around: after main frame 1 starts, when expecting to extrude from flat rubber belting mould 4, and flat rubber belting is directly drawn to more than on Wound Dies 8, continuous winding 5 encloses, then adjustment forming machine 3 required product pitch;
(4) pipe is wound around: start subsidiary engine 2, increase gradually, pipe is extruded from pipe mould 5 with the speed of increase per minute 5 turns, is wound around, and pipe is pressed into flat rubber belting form with hand traction pipe to Wound Dies 8, and the flat rubber belting with main frame 1 continues winding 3 and encloses;
(5) cooling forming: open cooling water nozzle 7, the position before pipe is taked air-cooled, and PP reinforced pipe 9 is delivered to pipe mould 5, PP reinforced pipe is wrapped on Wound Dies 8 by pipe mould 5 and carries out continuous winding;
(6) fixed length cutting: position-sensing switch is set, when product reaches the length of needs, when product encounters inductive switch, automatically start cutting machine carry out cutting both shaped article, product is set to 9 meters;
(7) hold, socket is wound around: after formed product, move on to the position of bellmouth wrapping machine 11 and socket wrapping machine 10, temperature controls at 170 DEG C, and speeds control at 55 turns per minute, then opens socket wrapping machine 10 and bellmouth wrapping machine 11 carries out extruding the mouth that is intertwined and connected;
(8) cooling forming: stop bellmouth wrapping machine 11 and socket wrapping machine 10 after described winding bell and spigot reaches standard-required, the demoulding after 8 minutes to be cooled, then carry out demoulding finishing;
(9) inspection warehouse-in: inspection product length, hold, socket size, product physical property, put in storage.
Embodiment 3:
A continuous production technology for carat pipe, specifically comprises the steps:
(1) spice: get 400 kilograms of polyethylene and 8 kilograms of black masterbatch, pours blender into and carries out spice in blended 15 minutes;
(2) add hot-extrudable: adopt vacuum feeding to suck the hopper of main frame 1, the technological temperature of main frame 1 is set to 195 DEG C, starts main frame 1, increases gradually with the speed of increase per minute 5 turns, starts to add hot-extrudable;
(3) flat rubber belting is wound around: after main frame 1 starts, when expecting to extrude from flat rubber belting mould 4, and flat rubber belting is directly drawn to more than on Wound Dies 8, continuous winding 5 encloses, then adjustment forming machine 3 required product pitch;
(4) pipe is wound around: start subsidiary engine 2, increase gradually, pipe is extruded from pipe mould 5 with the speed of increase per minute 5 turns, is wound around, and pipe is pressed into flat rubber belting form with hand traction pipe to Wound Dies 8, and the flat rubber belting with main frame 1 continues winding 3 and encloses;
(5) cooling forming: open cooling water nozzle 7, the position before pipe is taked air-cooled, and PP reinforced pipe 9 is delivered to pipe mould 5, PP reinforced pipe is wrapped on Wound Dies 8 by pipe mould 5 and carries out continuous winding; (6) fixed length cutting: position-sensing switch is set, when product reaches the length of needs, when product encounters inductive switch, automatically start cutting machine carry out cutting both shaped article, product is set to 12 meters;
(7) hold, socket is wound around: after formed product, move on to the position of bellmouth wrapping machine 11 and socket wrapping machine 10, temperature controls at 180 DEG C, and speeds control at 60 turns per minute, then opens socket wrapping machine 10 and bellmouth wrapping machine 11 carries out extruding the mouth that is intertwined and connected;
(8) cooling forming: stop bellmouth wrapping machine 11 and socket wrapping machine 10 after described winding bell and spigot reaches standard-required, the demoulding after 8 minutes to be cooled, then carry out demoulding finishing;
(9) inspection warehouse-in: inspection product length, hold, socket size, product physical property, put in storage.
More than show and describe general principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and description just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (3)
1. the continuous production device of a carat pipe, it is characterized in that: comprise main frame, subsidiary engine, forming machine, flat rubber belting mould, pipe mould, cooling bench, cooling water nozzle, Wound Dies, described main-machine screw is fed in raw material and is extruded into the flat rubber belting that flat rubber belting mould molding reaches met requirements for pipes, directly forming machine is wound to by leash, described subsidiary engine screw rod is reinforced is extruded into pipe mould molding pipe, directly mutually bonding with extruding flat rubber belting by leash, described forming machine cylinder is connected by fixed disk with Wound Dies, described flat rubber belting mould is arranged at the below of Wound Dies, described pipe mould is arranged at the top of Wound Dies, cooling bench is provided with below the side Wound Dies of described forming machine, described cooling bench is provided with some cooling water nozzles.
2. the continuous production device of a kind of carat of pipe according to claim 1, is characterized in that: the distance of described pipe mould and Wound Dies is 0.5-0.8 rice.
3. a continuous production technology for carat pipe, is characterized in that: comprise the steps:
(1) spice: get polyethylene and black masterbatch that mass ratio is 50:1, pours blender into and carries out spice in blended 15 minutes;
(2) add hot-extrudable: adopt vacuum feeding to suck the hopper of main frame, the technological temperature of main frame is set to 165 DEG C-195 DEG C, starts main frame, increases gradually with the speed of increase per minute 5 turns, starts to add hot-extrudable;
(3) flat rubber belting is wound around: when after host-initiated, when expecting to extrude from flat rubber belting mould, and flat rubber belting is directly drawn to more than on Wound Dies, continuous winding 5 encloses, then adjustment forming machine required product pitch;
(4) pipe is wound around: start subsidiary engine, increase gradually, pipe is extruded from pipe mould with the speed of increase per minute 5 turns, is wound around, and pipe is pressed into flat rubber belting form with on hand traction pipe to Wound Dies, and the flat rubber belting with main frame continues winding 3 and encloses;
(5) cooling forming: open cooling water nozzle, the position before pipe is taked air-cooled, and PP reinforced pipe is delivered to pipe mould, PP reinforced pipe is wrapped on Wound Dies by pipe mould and carries out continuous winding;
(6) fixed length cutting: position-sensing switch is set, when product reaches the length of needs, when product encounters inductive switch, automatically start cutting machine carry out cutting both shaped article, product can be set to 6-12 rice according to length;
(7) hold, socket is wound around: after formed product, move on to the position of bellmouth wrapping machine and socket wrapping machine, temperature controls at 165 DEG C-180 DEG C, and speeds control turns at 50-60 per minute, then opens socket wrapping machine and bellmouth wrapping machine carries out extruding the mouth that is intertwined and connected;
(8) cooling forming: stop bellmouth wrapping machine and socket wrapping machine after described winding bell and spigot reaches standard-required, the demoulding after 8 minutes to be cooled, then carry out demoulding finishing;
(9) inspection warehouse-in: inspection product length, hold, socket size, product physical property, put in storage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410578366.7A CN104476787A (en) | 2014-10-27 | 2014-10-27 | Krah pipe continuous-production device and production technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410578366.7A CN104476787A (en) | 2014-10-27 | 2014-10-27 | Krah pipe continuous-production device and production technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104476787A true CN104476787A (en) | 2015-04-01 |
Family
ID=52751457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410578366.7A Pending CN104476787A (en) | 2014-10-27 | 2014-10-27 | Krah pipe continuous-production device and production technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104476787A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104890252A (en) * | 2015-06-05 | 2015-09-09 | 湖北统塑管业有限公司 | Novel spiral wound krah pipe continuous production technology and device |
| CN104930272A (en) * | 2015-05-26 | 2015-09-23 | 江西浙丰管业有限公司 | High density polyethylene pipe and manufacturing method thereof |
| CN106799847A (en) * | 2017-03-30 | 2017-06-06 | 冯栓良 | Structure wall winding tube continuous production device and its production technology |
| CN108262988A (en) * | 2016-12-31 | 2018-07-10 | 浙江双林机械股份有限公司 | Continuous fiber PE composite pressure pipe production lines |
| CN108274791A (en) * | 2018-02-05 | 2018-07-13 | 洪瑞茜 | A kind of novel carat pipe preparation process |
| CN111469386A (en) * | 2020-03-24 | 2020-07-31 | 湖南天卓管业有限公司 | Krah pipe production facility |
| CN113681930A (en) * | 2021-08-31 | 2021-11-23 | 杭州富阳明洋实业有限公司 | Production device and production process for preventing rubber ring demoulding and mold rod adhesion |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63272530A (en) * | 1987-04-30 | 1988-11-10 | Dainippon Plastics Co Ltd | Manufacture of corrugated tube |
| CN202302370U (en) * | 2011-10-24 | 2012-07-04 | 韩路平 | Pipe with walls wound with reinforced polyethylene and production device thereof |
| CN202972239U (en) * | 2012-09-29 | 2013-06-05 | 石家庄宝石克拉大径塑管有限公司 | Large-caliber framework pipe and pipe adopting large-caliber framework pipes and polyethylene winding structure wall |
| CN103925428A (en) * | 2014-04-09 | 2014-07-16 | 张娟 | Enhancement structure wall pipe material and manufacturing device and method thereof |
| CN103963325A (en) * | 2014-04-09 | 2014-08-06 | 湖南前元新材料有限公司 | Production equipment and production technology for HDPE (high density polyethylene)spirally enwound structure-wall pipe (Krah pipe) |
-
2014
- 2014-10-27 CN CN201410578366.7A patent/CN104476787A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63272530A (en) * | 1987-04-30 | 1988-11-10 | Dainippon Plastics Co Ltd | Manufacture of corrugated tube |
| CN202302370U (en) * | 2011-10-24 | 2012-07-04 | 韩路平 | Pipe with walls wound with reinforced polyethylene and production device thereof |
| CN202972239U (en) * | 2012-09-29 | 2013-06-05 | 石家庄宝石克拉大径塑管有限公司 | Large-caliber framework pipe and pipe adopting large-caliber framework pipes and polyethylene winding structure wall |
| CN103925428A (en) * | 2014-04-09 | 2014-07-16 | 张娟 | Enhancement structure wall pipe material and manufacturing device and method thereof |
| CN103963325A (en) * | 2014-04-09 | 2014-08-06 | 湖南前元新材料有限公司 | Production equipment and production technology for HDPE (high density polyethylene)spirally enwound structure-wall pipe (Krah pipe) |
Non-Patent Citations (5)
| Title |
|---|
| 刘西文等: "《塑料挤出工[中、高级]培训教程》", 31 January 2013, 印刷工业出版社 * |
| 卢少忠等: "《塑料管道工程 性能·生产·应用》", 30 June 2004, 中国建材工业出版社 * |
| 吴念: "《塑料挤出生产线使用与维修手册》", 31 January 2007, 机械工业出版社 * |
| 杨鸣波等: "《中国材料工程大典 第6卷 高分子材料工程（上）》", 31 March 2006, 化学工业出版社 * |
| 陈泽成等: "《塑料挤出机头典型结构设计及试模调机经验汇编》", 30 April 2014, 机械工业出版社 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104930272A (en) * | 2015-05-26 | 2015-09-23 | 江西浙丰管业有限公司 | High density polyethylene pipe and manufacturing method thereof |
| CN104890252A (en) * | 2015-06-05 | 2015-09-09 | 湖北统塑管业有限公司 | Novel spiral wound krah pipe continuous production technology and device |
| CN108262988A (en) * | 2016-12-31 | 2018-07-10 | 浙江双林机械股份有限公司 | Continuous fiber PE composite pressure pipe production lines |
| CN106799847A (en) * | 2017-03-30 | 2017-06-06 | 冯栓良 | Structure wall winding tube continuous production device and its production technology |
| CN108274791A (en) * | 2018-02-05 | 2018-07-13 | 洪瑞茜 | A kind of novel carat pipe preparation process |
| CN111469386A (en) * | 2020-03-24 | 2020-07-31 | 湖南天卓管业有限公司 | Krah pipe production facility |
| CN113681930A (en) * | 2021-08-31 | 2021-11-23 | 杭州富阳明洋实业有限公司 | Production device and production process for preventing rubber ring demoulding and mold rod adhesion |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104476787A (en) | Krah pipe continuous-production device and production technology | |
| CN103963325B (en) | A kind of high density polyethylene (HDPE) winding structure carat pipe production technology | |
| CN108016026B (en) | Forming method of HDPE double-wall winding pipe | |
| CN104890252A (en) | Novel spiral wound krah pipe continuous production technology and device | |
| CN110978445A (en) | PE pipeline production process and device | |
| CN204209942U (en) | A kind of industrial hose extruding production line | |
| CN101451633A (en) | Large diameter plastic winding tube with socket mouth and production method | |
| CN102441976A (en) | Plastic pipe extrusion molding apparatus | |
| CN203726846U (en) | Energy-saving production system of double-wall corrugated pipes | |
| CN103591391B (en) | A kind of processing method of rubber combined steel pipe | |
| CN105196514A (en) | Extrusion molding mould of online biaxially oriented plastic large diameter pipe | |
| CN205033555U (en) | Extrusion moulding mould of online biaxial orientation plastics heavy -calibre tubular product | |
| CN207630478U (en) | A kind of power cable sheath tube extrusion molding device | |
| CN203198241U (en) | Plastic pipe extrusion die | |
| CN205044146U (en) | Serialization winding production facility of carat pipe | |
| CN106750817A (en) | A kind of special Large Diameter Pipeline PE branch pipe production technologies of low-pressure drip irrigation | |
| CN215825996U (en) | PE feed pipe extruder | |
| CN204526106U (en) | A kind of plastic cement extrusion molding system | |
| CN201275880Y (en) | Production facility for heavy caliber framework tube polyethylene winding structure wall pipe | |
| CN203401724U (en) | Inner mold core device for manufacturing polyvinyl chloride (PVC) thermal shrinkage printed film | |
| CN104816454A (en) | Novel tube extruding auxiliary engine | |
| CN210047037U (en) | Plastic pipe extrusion die | |
| CN203863873U (en) | Spiral collection device | |
| CN204295992U (en) | A kind of plastic pipe production line waste heat recycling system | |
| CN204263560U (en) | Fiber glass reinforced polypropylene pipe process units |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150401 |