CN103538237A - Co-extrusion die - Google Patents
Co-extrusion die Download PDFInfo
- Publication number
- CN103538237A CN103538237A CN201210244482.6A CN201210244482A CN103538237A CN 103538237 A CN103538237 A CN 103538237A CN 201210244482 A CN201210244482 A CN 201210244482A CN 103538237 A CN103538237 A CN 103538237A
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- China
- Prior art keywords
- spreader
- fluid
- pipeline
- fluid pipeline
- small
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
- B29C48/335—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles
- B29C48/337—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles the components merging at a common location
- B29C48/338—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles the components merging at a common location using a die with concentric parts, e.g. rings, cylinders
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/09—Articles with cross-sections having partially or fully enclosed cavities, e.g. pipes or channels
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/16—Articles comprising two or more components, e.g. co-extruded layers
- B29C48/18—Articles comprising two or more components, e.g. co-extruded layers the components being layers
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
- B29C48/335—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles
- B29C48/336—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles the components merging one by one down streams in the die
- B29C48/3366—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles the components merging one by one down streams in the die using a die with concentric parts, e.g. rings, cylinders
-
- 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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/30—Extrusion nozzles or dies
- B29C48/32—Extrusion nozzles or dies with annular openings, e.g. for forming tubular articles
- B29C48/335—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles
- B29C48/337—Multiple annular extrusion nozzles in coaxial arrangement, e.g. for making multi-layered tubular articles the components merging at a common location
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
- B29L2023/22—Tubes or pipes, i.e. rigid
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a co-extrusion die which comprises a shell, and a first inlet, a second inlet and a fluid pipeline arranged in the shell, wherein the first inlet and the second inlet are communicated with the fluid pipeline. The co-extrusion die also comprises a first distribution cone and a first allocation body; the first distribution cone is connected with the first allocation body; the combination of the first distribution cone and the first allocation body divides the fluid pipeline into a first fluid pipeline and a second fluid pipeline. According to the co-extrusion die disclosed by the invention, through the combination of the first distribution cone and the first allocation body, the combination of the second distribution cone and the second allocation body, the combination of the third distribution cone and the third allocation body and the first distribution cone pipeline arranged in the first distribution cone, the fluid pipeline is provided with five branch pipelines, and five-layer co-extrusion is realized in an extrusion moulding process; due to the extrusion in the same pipeline, the layers are firmly bonded, and the production cost is also reduced; moreover, the structure is simple and very practical.
Description
Technical field
The present invention relates to extrusion molding field, is a kind of co-extruding mould specifically.
Background technology
Extrusion molding is otherwise known as and extrudes, and it is a kind of plastics molding process, is one of important method of thermoplastic plastics shaping.
Extrusion molding is that plastic raw materials is heated, make it to be glutinous stream mode, under the effect of pressurization, by extruded mould, become cross section and mouthful non-individual body that mould shape is similar, then carrying out cooling and shaping is glassy state, obtains having the plastic products of certain geometrical shape and size through cutting.
At present, three layers of above multiple tube adopt substep extrusion ways in extrusion molding industry, have complex manufacturing, production line high cost, the defect such as each interlaminar bonding of tubing is not firm.
Therefore, need especially a kind of co-extruding mould, to solve the defect existing in prior art.
Summary of the invention
The object of the invention is need to extrude step by step in order to solve existing co-extruding mould, complex manufacturing, production line high cost, the not firm defect of each interlaminar bonding of tubing, provides a kind of co-extruding mould to solve the problems referred to above.
To achieve these goals, technical scheme of the present invention is as follows:
A kind of co-extruding mould, comprise housing, with the first entrance that is arranged on enclosure interior, the second entrance, fluid line and fluid issuing, described the first entrance, the second entrance communication of fluid pipeline, it is characterized in that, also comprise the first spreader and first minute part, described the first spreader is arranged on first access point in fluid line, one end of described first minute part connects the first spreader, another two ends of described first minute part are connected to fluid outlet, the combination of described the first spreader and first minute part is divided into first fluid pipeline and second fluid pipeline by fluid line.
In the present invention, the inside of described first minute part is provided with the first spreader pipeline, and one end of described the first spreader pipeline is communicated with the first entrance, the other end communication of fluid outlet of described the first spreader pipeline.
In the present invention, in described first fluid pipeline, be provided with the second spreader and second minute part, described the second spreader connects second minute part, and the combination of described the second spreader and second minute part is divided into fluid line and first time fluid line on first by a part for first fluid pipeline.
In the present invention, within described second minute, part comprises the second small-sized spreader and the second miniature fluid pipeline, described the second entrance is communicated with one end of the second miniature fluid pipeline, described the second small-sized spreader is arranged on the inside of the second miniature fluid pipeline, described the second small-sized spreader is divided into the second small-sized upper fluid line and the second small-sized lower fluid line by a part for the second miniature fluid pipeline, and the other end of described the second miniature fluid pipeline is communicated with on first fluid pipeline.
In the present invention, in described second fluid pipeline, be provided with second spreader symmetrical with first fluid pipeline, second minute part, the second small-sized spreader, the second miniature fluid pipeline, the second small-sized upper fluid line and the second small-sized lower fluid line.
In the present invention, in described second fluid pipeline, be also provided with the 3rd spreader and the 3rd minute part, described the 3rd spreader connects the 3rd minute part, and the combination of described the 3rd spreader and the 3rd minute part is divided into fluid line and second time fluid line on second by a part for second fluid pipeline.
In the present invention, within described the 3rd minute, part comprises the 3rd small-sized spreader and the 3rd miniature fluid pipeline, described the second entrance is communicated with one end of the 3rd miniature fluid pipeline, described the 3rd small-sized spreader is arranged on the inside of the 3rd miniature fluid pipeline, described the 3rd small-sized spreader is divided into the 3rd small-sized upper fluid line and the 3rd small-sized lower fluid line by a part for the 3rd miniature fluid pipeline, and the other end of described the 3rd miniature fluid pipeline is communicated with on second fluid pipeline.
A kind of co-extruding mould of the present invention, compare with existing product, the combination of the combination of the combination of the first spreader and first minute part, the second spreader and second minute part, the 3rd spreader and the 3rd minute part and the first spreader pipeline is set in the inside of the first spreader, make fluid line of the present invention there is the pipeline of Wu Ge branch, realize the five-layer co-squeezing in extrusion process, owing to extruding in same pipeline, make to bond firmly between each layer, also reduced production cost, simple in structure, very practical, realize object of the present invention.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
The specific embodiment
For making that architectural feature of the present invention and the effect reached are had a better understanding and awareness, in order to preferred embodiment and accompanying drawing, coordinate detailed explanation, be described as follows:
Referring to Fig. 1, a kind of co-extruding mould, comprise housing 100, with the first entrance 110 that is arranged on enclosure interior, the second entrance 120, fluid line 130 and fluid issuing 140, the first entrance 110, the second entrance 120 communication of fluid pipelines 130, co-extruding mould, the first spreader 200 of shunting action and first minute part 300 that uninterrupted is distributed have also been comprised, the first spreader 200 is arranged on the first entrance 110 places in fluid line 130, one end of first minute part 300 connects the first spreader 200, another two ends of first minute part 300 are connected to fluid issuing 140 places, the combination of the first spreader 200 and first minute part 300 is divided into first fluid pipeline 400 and second fluid pipeline 500 by fluid line 130
The inside of first minute part 300 is provided with the first spreader pipeline 210, one end of the first spreader pipeline 210 is communicated with the first entrance 110, the other end connection of the first spreader pipeline 210 is arranged on the fluid issuing 140 on housing 100, reaches joint space-efficient object.
In first fluid pipeline 400, be provided with the second spreader 410 and second minute part 420, the second spreader 410 connects second minute part 420, the combination of the second spreader 410 and second minute part 420 is divided into fluid line 430 and first time fluid line 440 on first by a part for first fluid pipeline 400, reaches the object of layering.
Within second minute, part 420 comprises the second small-sized spreader 421 and the second miniature fluid pipeline 422, the second entrance 120 is communicated with one end of the second miniature fluid pipeline 422, the second small-sized spreader 421 is arranged on the inside of the second miniature fluid pipeline 422, the second small-sized spreader 421 is divided into the second small-sized upper fluid line 422-1 and the second small-sized lower fluid line 422-2 by a part for the second miniature fluid pipeline 422, the other end of the second miniature fluid pipeline 422 is communicated with on first fluid pipeline 400, reaches multi-layer co-extruded object.
In second fluid pipeline 500, be provided with second spreader 410 symmetrical with first fluid pipeline 400, second minute small-sized spreader 421 of part 420, second, the small-sized upper fluid line 422-1 of the second miniature fluid pipeline 422, second and the second small-sized lower fluid line 422-1.
In second fluid pipeline 500, be also provided with the 3rd spreader 600 and the 3rd minute part 700, the combination that the 3rd spreader 600 connects the 3rd minute part 700, the three spreaders 600 and the 3rd minute part 700 is divided into fluid line 610 and second time fluid line 620 on second by a part for second fluid pipeline 500.
Within the 3rd minute, part 700 comprises the 3rd small-sized spreader 710 and the 3rd miniature fluid pipeline 720, the second entrance 120 is communicated with one end of the 3rd miniature fluid pipeline 720, the 3rd small-sized spreader 710 is arranged on the inside of the 3rd miniature fluid pipeline 720, the other end that the 3rd small-sized spreader 710 is divided into the 3rd small-sized upper fluid line 721 and the 3rd small-sized lower fluid line 722, the three miniature fluid pipelines 720 by a part for the 3rd miniature fluid pipeline 720 is communicated with on second fluid pipeline 500.
When in use, melt plastics enter fluid passage from the first entrance 110, the combination of the first spreader 200 and first minute part 300 flows in first fluid passage 400 and second fluid passage 500 melt plastics, in first fluid pipeline 400, be provided with the second spreader 410 and second minute part 420, again melt plastics are shunted, in like manner, also shunting again in second fluid pipeline 500, thereby make melt plastics have four laminar flow lines, the inside of the first spreader 200 is provided with the first spreader pipeline 210, one end of the first spreader pipeline 210 is communicated with the first entrance 110, the other end connection of the first spreader pipeline 210 is arranged on the fluid issuing 140 on housing 100, another layer is shunted melt plastics, reach the extrusion molding mode of five-layer co-squeezing, the second entrance 120 enters other material, by the second miniature fluid pipeline 422 and the 3rd miniature fluid pipeline 720, realize layering streamline, and match with four laminar flow lines of melt plastics, reach the object of five-layer co-squeezing.
A kind of co-extruding mould of the present invention, compare with existing product, the combination of the first spreader 200 and first minute part 300, the combination of the second spreader 410 and second minute part 420, the combination of the 3rd spreader 600 and the 3rd minute part 700 and the first spreader pipeline 210 is set in the inside of the first spreader 200, make fluid line 130 of the present invention there is the pipeline of Wu Ge branch, realize the five-layer co-squeezing in extrusion process, owing to extruding in same pipeline, make to bond firmly between each layer, also reduced production cost, simple in structure, very practical, realize object of the present invention.
More than show and described basic principle of the present invention, 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 in above-described embodiment and description, describe is principle of the present invention; the present invention also has various changes and modifications without departing from the spirit and scope of the present invention, and these changes and improvements all fall in claimed scope of the present invention.The protection domain that the present invention requires is defined by appending claims and equivalent thereof.
Claims (7)
1. a co-extruding mould, comprise housing, with the first entrance that is arranged on enclosure interior, the second entrance, fluid line and fluid issuing, described the first entrance, the second entrance communication of fluid pipeline, it is characterized in that, also comprise the first spreader and first minute part, described the first spreader is arranged on first access point in fluid line, one end of described first minute part connects the first spreader, another two ends of described first minute part are connected to fluid outlet, the combination of described the first spreader and first minute part is divided into first fluid pipeline and second fluid pipeline by fluid line.
2. a kind of co-extruding mould according to claim 1, it is characterized in that: the inside of described first minute part is provided with the first spreader pipeline, one end of described the first spreader pipeline is communicated with the first entrance, the other end communication of fluid outlet of described the first spreader pipeline.
3. a kind of co-extruding mould according to claim 1, it is characterized in that: in described first fluid pipeline, be provided with the second spreader and second minute part, described the second spreader connects second minute part, and the combination of described the second spreader and second minute part is divided into fluid line and first time fluid line on first by a part for first fluid pipeline.
4. a kind of co-extruding mould according to claim 3, it is characterized in that: within described second minute, part comprises the second small-sized spreader and the second miniature fluid pipeline, described the second entrance is communicated with one end of the second miniature fluid pipeline, described the second small-sized spreader is arranged on the inside of the second miniature fluid pipeline, described the second small-sized spreader is divided into the second small-sized upper fluid line and the second small-sized lower fluid line by a part for the second miniature fluid pipeline, and the other end of described the second miniature fluid pipeline is communicated with on first fluid pipeline.
5. a kind of co-extruding mould according to claim 4, is characterized in that: in described second fluid pipeline, be provided with second spreader symmetrical with first fluid pipeline, second minute part, the second small-sized spreader, the second miniature fluid pipeline, the second small-sized upper fluid line and the second small-sized lower fluid line.
6. a kind of co-extruding mould according to claim 1, it is characterized in that: in described second fluid pipeline, be also provided with the 3rd spreader and the 3rd minute part, described the 3rd spreader connects the 3rd minute part, and the combination of described the 3rd spreader and the 3rd minute part is divided into fluid line and second time fluid line on second by a part for second fluid pipeline.
7. a kind of co-extruding mould according to claim 6, it is characterized in that: within described the 3rd minute, part comprises the 3rd small-sized spreader and the 3rd miniature fluid pipeline, described the second entrance is communicated with one end of the 3rd miniature fluid pipeline, described the 3rd small-sized spreader is arranged on the inside of the 3rd miniature fluid pipeline, described the 3rd small-sized spreader is divided into the 3rd small-sized upper fluid line and the 3rd small-sized lower fluid line by a part for the 3rd miniature fluid pipeline, and the other end of described the 3rd miniature fluid pipeline is communicated with on second fluid pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210244482.6A CN103538237B (en) | 2012-07-16 | 2012-07-16 | A kind of co-extruding mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210244482.6A CN103538237B (en) | 2012-07-16 | 2012-07-16 | A kind of co-extruding mould |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103538237A true CN103538237A (en) | 2014-01-29 |
| CN103538237B CN103538237B (en) | 2016-04-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210244482.6A Active CN103538237B (en) | 2012-07-16 | 2012-07-16 | A kind of co-extruding mould |
Country Status (1)
| Country | Link |
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| CN (1) | CN103538237B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107336418A (en) * | 2017-07-17 | 2017-11-10 | 苏州金纬管道科技有限公司 | Assembling die for plastic extruder |
| CN108394080A (en) * | 2018-04-24 | 2018-08-14 | 苏州融达信新材料科技有限公司 | A kind of dispensing arrangement being used to prepare multi-layer C PP films |
| CN108819172A (en) * | 2018-07-16 | 2018-11-16 | 德科摩橡塑科技(东莞)有限公司 | Five layers of pipe extrusion die |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4061461A (en) * | 1976-05-10 | 1977-12-06 | Thermoplastice Processes Inc. | Compound extrusion die for producing an internally lined extrudate |
| EP0279321A2 (en) * | 1987-02-14 | 1988-08-24 | BEKUM Maschinenfabriken GmbH | Co-extrusion head |
| CN2218641Y (en) * | 1995-01-18 | 1996-01-31 | 王守信 | Three layer coextruding plastic core foaming pipe head |
| US5738881A (en) * | 1995-12-14 | 1998-04-14 | Macro Engineering & Technology Inc. | Annular co-extrusion die |
| CN2715970Y (en) * | 2004-07-15 | 2005-08-10 | 金德管业集团有限公司 | Laminated type co-extrusion die for producing rigid polyvinyl chloride pipe |
| CN101712197A (en) * | 2009-11-04 | 2010-05-26 | 大连理工大学 | Visual polymer micro-extrusion mold |
| CN102529060A (en) * | 2011-12-14 | 2012-07-04 | 德科摩橡塑科技(东莞)有限公司 | Multi-layer coextruding die head of extruder |
-
2012
- 2012-07-16 CN CN201210244482.6A patent/CN103538237B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4061461A (en) * | 1976-05-10 | 1977-12-06 | Thermoplastice Processes Inc. | Compound extrusion die for producing an internally lined extrudate |
| EP0279321A2 (en) * | 1987-02-14 | 1988-08-24 | BEKUM Maschinenfabriken GmbH | Co-extrusion head |
| CN2218641Y (en) * | 1995-01-18 | 1996-01-31 | 王守信 | Three layer coextruding plastic core foaming pipe head |
| US5738881A (en) * | 1995-12-14 | 1998-04-14 | Macro Engineering & Technology Inc. | Annular co-extrusion die |
| CN2715970Y (en) * | 2004-07-15 | 2005-08-10 | 金德管业集团有限公司 | Laminated type co-extrusion die for producing rigid polyvinyl chloride pipe |
| CN101712197A (en) * | 2009-11-04 | 2010-05-26 | 大连理工大学 | Visual polymer micro-extrusion mold |
| CN102529060A (en) * | 2011-12-14 | 2012-07-04 | 德科摩橡塑科技(东莞)有限公司 | Multi-layer coextruding die head of extruder |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107336418A (en) * | 2017-07-17 | 2017-11-10 | 苏州金纬管道科技有限公司 | Assembling die for plastic extruder |
| CN108394080A (en) * | 2018-04-24 | 2018-08-14 | 苏州融达信新材料科技有限公司 | A kind of dispensing arrangement being used to prepare multi-layer C PP films |
| CN108394080B (en) * | 2018-04-24 | 2021-10-12 | 苏州融达信新材料科技有限公司 | Distributor structure for preparing multilayer CPP film |
| CN108819172A (en) * | 2018-07-16 | 2018-11-16 | 德科摩橡塑科技(东莞)有限公司 | Five layers of pipe extrusion die |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103538237B (en) | 2016-04-13 |
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Effective date of registration: 20200320 Address after: 037010 Fanzhuang Village East, development zone, Datong City, Shanxi Province Patentee after: SHANXI JIUYITONG PIPE INDUSTRY TECHNOLOGY Co.,Ltd. Address before: Yinzhou District Jingu road 315105 Zhejiang city of Ningbo province (East) No. 9 Patentee before: NINGBO KONRUN MACHINERY TECHNOLOGY Co.,Ltd. |
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