CN104668913B - The manufacturing equipment of stainless steel tube three-layer polypropylene anti-corrosion pipe and its using method - Google Patents
The manufacturing equipment of stainless steel tube three-layer polypropylene anti-corrosion pipe and its using method Download PDFInfo
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- CN104668913B CN104668913B CN201510119234.2A CN201510119234A CN104668913B CN 104668913 B CN104668913 B CN 104668913B CN 201510119234 A CN201510119234 A CN 201510119234A CN 104668913 B CN104668913 B CN 104668913B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
Abstract
The invention discloses a kind of manufacturing equipment of stainless steel tube three-layer polypropylene anti-corrosion pipe and its method.It includes conveying the feed mechanism (1) of stainless steel tube, is sequentially provided with sand blasting apparatus (2), device for painting (3), cutter sweep (4) and water cooling plant (5) above feed mechanism (1).Described sand blasting apparatus (2) include shot blast room (201); stainless steel tube (6) wears shot blast room (201) and mistake; the two ends of stainless steel tube (6) are provided with groove protector (202), and groove protector (202) is polyurethane body；The lower section of described shot blast room (201) is provided with impeller head (203), it is provided with through hole (204) between shot blast room (201) and impeller head (203), rotating shaft (205) is included, rotating shaft (205) is provided with pill casting wheel (206) inside impeller head (203).Present invention achieves the full-automation of derusting by sandblasting, japanning, cutting and water-cooled, rational in infrastructure, using effect is very superior.
Description
Technical field
The present invention relates to a kind of manufacturing equipment of stainless steel tube three-layer polypropylene anti-corrosion pipe and its method, belong to stainless steel tube
Manufacture field.
Background technology
Stainless steel tube three-layer polypropylene anti-corrosion pipe in process of production, is primarily present problems with：1st, need to carry out sandblasting
Rust cleaning, stainless steel tube will be connected by pipe connector, then passes sequentially through shot blast room and carry out derusting by sandblasting.Existing pipe connector is all
Rigid structure, can not possibly accomplish that every stainless steel tube, each pipe connector are identical aborning, therefore will take over device and install
Be difficult to avoid that after on stainless steel tube has gap, during derusting by sandblasting, has part abrasive material and enters these seams
Gap is simultaneously detained wherein.When pipe is connected with pipe bevel end face, because stainless steel tube is rotationally advancing on the belt, when connecting
Necessarily have friction.Now, the abrasive material of delay can cause to pipe end slope-mouth to damage in the presence of frictional force, is unfavorable for that welding makes
With, or even cause serious quality problems.Further, since pipe end slope-mouth exposes outside, in impeller blasting, groove also can be subject to
The direct impelling of abrasive material, causes considerable degree of abrasion.Additionally, rustless steel pipe connector is circular ring, port blow-by,
Have a certain amount of abrasive material during derusting by sandblasting and enter in pipe by the mouth of pipe, to the protection being formed during stainless steel inside pipe wall pickling
Film causes to damage.In drifting dust operation removing pipe after derusting by sandblasting terminates in addition it is also necessary in a deferent, the dust of accumulation, abrasive material etc. are different
Thing.2nd, on stainless steel tube anticorrosive coat Coating Production Line, in order to ensure the seriality producing, stainless steel tube is to join end to end by root
At the uniform velocity advance on drive line.And in coating region, spray gun, extruder are also that continuous work does not pause, this can lead to institute
Some painting tubines are connected to an entirety.It is therefore desirable to arrange special messenger to cut off anticorrosive coat at pipe end position in coating region, make
Piece pipe of previous Guan Yuhou separately, then carries out subsequent handling process.The major defect that this process exists is：Need one
Name personnel specialize in cutting work, and labour force's service efficiency is low, improves cost of labor；Cutting work is pure manual behaviour
Make, higher to the technology and skill requirement of this employee, anticorrosive coat and stainless steel tube may be caused in operation to damage, should
The operation level of employee can have a direct impact to product quality；Stainless steel tube after coating, before cooling and anticorrosive coat temperature exist
More than 200 degrees Celsius, carry out artificial cutting operation and there is certain risk, cause because of personal carelessness or other accidental causes
Personal injury event.3rd, the cooling technology of existing stainless steel tube three-layer polypropylene anti-corrosion pipe mainly has spray and two kinds of water pouring cold
But mode.There is many drawbacks in this type of cooling：After stainless steel tube carries out 3PP coating, it is directly entered spray or water water drenching
Cooling system, this when, because PP is still in the condition of high temperature, so that material is still very soft, sprayed or water drench make
During industry, so that coating surface produces water wave, the water yield of flowing also can be to coating surface when concentrating for Water spray to pipeline coatings surface
Produce groove, it is uneven to easily cause PP thickness, and when cooling water inflow size changes, anti-corrosion layer surface produce water attack point and
Dim spot, affects the attractive in appearance of corrosion-inhibiting coating surface.
Content of the invention
It is an object of the invention to, a kind of manufacturing equipment of stainless steel tube three-layer polypropylene anti-corrosion pipe is provided.The present invention is real
Show the full-automation of derusting by sandblasting, application, cutting and water-cooled, rational in infrastructure, using effect is very superior.
Technical scheme：A kind of manufacturing equipment of stainless steel tube three-layer polypropylene anti-corrosion pipe, stainless including conveying
The feed mechanism of steel pipe, is sequentially provided with sand blasting apparatus, painting device, cutter sweep and water cooling plant above feed mechanism；
Described sand blasting apparatus include shot blast room, and stainless steel tube wears shot blast room and mistake, and the two ends of stainless steel tube are provided with
Groove protector, groove protector is polyurethane body；The lower section of described shot blast room is provided with impeller head, shot blast room and impeller head
Between be provided with through hole, include rotating shaft inside impeller head, rotating shaft is provided with pill casting wheel；
Described cutter sweep includes being arranged on the guide rail above feed mechanism, is provided with servomotor, servo below guide rail
The outfan of motor is engaged with guide rail, and servomotor is provided with infrared ray sensor；It is provided with cylinder below servomotor, cylinder
External part is provided with cutting wheel, and cutting wheel includes wheel body, is provided with three cutting blades be arrangeding in parallel below wheel body；
Described water cooling plant includes soaking water tank, soaks water tank both sides and is respectively provided with arc port, stainless steel tube runs through arc
Shape port and mistake；It is provided with casing below described immersion water tank, under casing, is provided with water pump, water pump is connected with circulation pipe, circulation pipe
Outlet with soak water tank be connected；The described side soaking water tank is provided with spray water tank, and upper spray water tank is connected with into water
Pipe, is provided with mouth spray below upper spray water tank；The both sides of described immersion water tank are provided with feed mechanism.
In the manufacturing equipment of aforesaid stainless steel tube three-layer polypropylene anti-corrosion pipe, described feed mechanism includes and motor phase
Rotary shaft even, rotary shaft forward direction has inclination angle, and rotary shaft is provided with wheel group, and the outside of wheel group is arranged with polyurethane
Layer.
The preparation method of aforementioned manufacturing equipment, comprises the following steps successively；
(1), groove protector on the set of the two ends of stainless steel tube, then stainless steel tube is placed in the wheel group of feed mechanism,
Wheel group rotates and transmits stainless steel tube to shot blast room；
(2), Motor drive pill casting wheel rotates, and abrasive material passes through ball blast impeller blade, abrasive material is formed the form throwing camber line, through logical
Hole impacts steel tube surface, and stainless steel tube is eliminated rust；
(3) stainless steel tube rust cleaning completes, and steel pipe is changed one's profession and taken the groove protector at stainless steel tube two ends after stand, then
Adjacent stainless steel tube is connected with adapter successively, then by root, steel pipe placement coating line wheel group is connected into stainless steel tube
Group；
(4) stainless steel tube group is transmitted through wheel group and is coated polypropylene coating to device for painting, and coating completes again through wheel group
Transmit to cutter sweep；
(5) infrared ray sensor of cutter sweep detects stainless steel tube group and transmits to precalculated position, and cylinder drives three
Piece cutting blade declines, and by the coating cut-out between stainless steel tube, the cutting blade of both sides is rotated in for middle cutting blade rotation
Stainless steel tube two ends ring cutting goes out mark position；Cutting completes exhaust hood and drives the cutting blade of cutting wheel to be lifted off rustless steel steel
Pipe surface；
(6) stainless steel tube group is transmitted to water cooling plant through wheel group, enters from the side arc port soaking water tank, opposite side
Arc port passes, and rotates in conveying；Water is evacuated to immersion water tank under casing by water pump, and the water soaking in water tank leads to from arc
Gap between mouth and stainless steel tube group flows out under casing, makes the water yield that water pump is pumped be more than and soaks the water yield that water tank flows out,
The half volume making stainless steel tube group is immersed in water, carries out the pre-cooling of stainless steel tube group polypropylene coating；
(7) after the opposite side arc port soaking water tank passes, the shower water of upper spray water tank continues to stainless steel tube
Group polypropylene coating carries out chilling spray；Stainless steel coating pipe is until operating water outlet cold-room transfers to stand；
(8) take off the adapter connecting stainless steel tube group, remove the polypropylene outside the mark position of stainless steel tube two ends and apply
Layer, completes the manufacture of stainless steel tube three-layer polypropylene anti-corrosion pipe.
Compared with prior art, the present invention mainly has following beneficial effect：
(1) stainless steel tube group is connected through groove protector by one group of stainless steel tube, and groove protector is polyurethane body, can
Entered in pipe by the mouth of pipe it is also possible to solve abrasive material with preventing abrasive material from pipe end slope-mouth is caused damage, to stainless steel inside pipe wall acid
The protecting film being formed when washing causes the problem damaged, and improves the performance of product.
(2) present invention is provided with servomotor below guide rail, and the outfan of servomotor is engaged with guide rail, under servomotor
Side is provided with cylinder, is provided with cutting wheel, when servomotor rotates, servomotor can move back and forth on guide rail below cylinder, band
Dynamic cutting wheel moves back and forth, and when moving to specified location, cylinder action drives cutting wheel moves down the cutting carrying out stainless steel tube.
Preferably, being provided with infrared ray sensor on servomotor, whether specified location can be moved on to accurate detection servomotor.?
The lower section of the wheel body of cutting wheel is provided with cutting blade, and the coating between stainless steel tube is cut off by middle cutting blade rotation, both sides
Cutting blade be rotated in stainless steel tube two ends ring cutting and go out mark position；Cutting completes the cutting blade that exhaust hood drives cutting wheel
On.
(3) present invention arranges an immersion water tank before spray water tank, soaks water tank both sides and is provided with arc port, after production
Stainless steel tube wears arc port and mistake, water pump to soaking cistern water supply, and water-supply quantity be more than or equal to water from arc port with
The water yield that stainless steel tube gap is flowed out, so that stainless steel tube is immersed in water, reaches the purpose of pre-cooling so that stainless steel tube coating
Surface is cooled down so that the cooling water in being sprayed will not be to rustless steel through spray water tank after first carrying out surface hardening by cooling again
The coating of coated pipe causes water wave, the phenomenon of water attack point and coating gage distortion.Further, described feed mechanism includes two
The rotating wheel that root be arranged in parallel, does not only reach the function of stainless steel tube conveying, and makes rustless steel tube edge convey side rotation, improves
Precooling effect in immersion water tank.
(4) yet further, described feed mechanism includes being set in parallel in the wheel group below cutting wheel, the outside of wheel group
It is provided with polyurethane layer, wheel group can drive rustless steel tube edge rotation side to move ahead, and polyurethane layer can protect stainless steel tube, not impaired
Wound.
Brief description
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation of derusting by sandblasting；
Fig. 3 is the structural representation of cutter sweep；
Fig. 4 is the structural representation of water cooling plant；
Fig. 5 soaks the structural representation of water tank.
Specific embodiment
With reference to embodiment, the present invention is described in further detail, but not as limitation of the present invention.
Embodiment：A kind of manufacturing equipment of stainless steel tube three-layer polypropylene anti-corrosion pipe, as shown in Figure 1, including conveying not
The feed mechanism 1 of rust steel pipe, is sequentially provided with sand blasting apparatus 2, device for painting 3, cutter sweep 4 and water above feed mechanism 1
Device for cooling 5；
As shown in Figure 2, described sand blasting apparatus 2 include shot blast room 201, stainless steel tube 6 wear shot blast room 201 and
Cross, the two ends of stainless steel tube 6 are provided with groove protector 202, groove protector 202 is polyurethane body；Described shot blast room 201
Lower section be provided with impeller head 203, be provided with through hole 204 between shot blast room 201 and impeller head 203, impeller head 203 is internal to include rotating shaft
205, rotating shaft 205 is provided with pill casting wheel 206, and the wheel face of pill casting wheel is in bowl-shape, smoothly can throw abrasive material；
As shown in Figure 3, described cutter sweep 4 includes being arranged on the guide rail 401 of feed mechanism 1 top, under guide rail 401
Side is provided with servomotor 402, and the outfan of servomotor 402 is engaged with guide rail 401, and servomotor 402 is provided with infrared ray and passes
Sensor 403；It is provided with cylinder 404, the external part of cylinder 404 is provided with cutting wheel 405, and cutting wheel 405 includes below servomotor 402
Wheel body 406, is provided with three cutting blades 407 be arrangeding in parallel below wheel body 406；
As shown in accompanying drawing 4 and Fig. 5, described water cooling plant 5 includes soaking water tank 506, soaks water tank 506 both sides and is respectively provided with
Arc port 501, stainless steel tube 6 runs through arc port 501 and mistake；It is provided with casing 502, bottom below described immersion water tank 506
It is provided with water pump 503, water pump 503 is connected with circulation pipe 504, the outlet of circulation pipe 504 is connected with soaking water tank 506 in case 502；
The described side soaking water tank 506 is provided with spray water tank 507, and upper spray water tank 507 is connected with water inlet pipe 505, upper shower water
It is provided with mouth spray 508 below case 507.
As shown in Figure 3, described feed mechanism 1 includes the rotary shaft 102 being connected with motor 101, and rotary shaft 102 is forward
Enter direction and there is inclination angle, rotary shaft 102 is provided with wheel group 103, the outside of wheel group 103 is arranged with polyurethane layer 104.
The preparation method of above-mentioned manufacturing equipment, comprises the following steps successively；
(1), groove protector on the set of the two ends of stainless steel tube, then stainless steel tube is placed in the wheel group of feed mechanism,
Wheel group rotates and transmits stainless steel tube to shot blast room；
(2), Motor drive pill casting wheel rotates, and abrasive material passes through ball blast impeller blade, abrasive material is formed the form throwing camber line, through logical
Hole impacts steel tube surface, and stainless steel tube is eliminated rust；
(3) stainless steel tube rust cleaning completes, and steel pipe is changed one's profession and taken the groove protector at stainless steel tube two ends after stand, then
Adjacent stainless steel tube is connected with adapter successively, then by root, steel pipe placement coating line wheel group is connected into stainless steel tube
Group；
(4) stainless steel tube group is transmitted through wheel group and is coated polypropylene coating to device for painting, and coating completes again through wheel group
Transmit to cutter sweep；
(5) infrared ray sensor of cutter sweep detects stainless steel tube group and transmits to precalculated position, and cylinder drives three
Piece cutting blade declines, and by the coating cut-out between stainless steel tube, the cutting blade of both sides is rotated in for middle cutting blade rotation
Stainless steel tube two ends ring cutting goes out mark position；Cutting completes exhaust hood and drives the cutting blade of cutting wheel to be lifted off rustless steel steel
Pipe surface；
(6) stainless steel tube group is transmitted to water cooling plant through wheel group, enters from the side arc port soaking water tank, opposite side
Arc port passes, and rotates in conveying；Water is evacuated to immersion water tank under casing by water pump, and the water soaking in water tank leads to from arc
Gap between mouth and stainless steel tube group flows out under casing, makes the water yield that water pump is pumped be more than and soaks the water yield that water tank flows out,
The half volume making stainless steel tube group is immersed in water, carries out the pre-cooling of stainless steel tube group polypropylene coating；
(7) after the opposite side arc port soaking water tank passes, the shower water of upper spray water tank continues to stainless steel tube
Group polypropylene coating carries out chilling spray；Stainless steel coating pipe is until operating water outlet cold-room transfers to stand；
(8) take off the adapter connecting stainless steel tube group, remove the polypropylene outside the mark position of stainless steel tube two ends and apply
Layer, completes the manufacture of stainless steel tube three-layer polypropylene anti-corrosion pipe.
Claims (3)
1. stainless steel tube three-layer polypropylene anti-corrosion pipe manufacturing equipment it is characterised in that：Feeding machine including conveying stainless steel tube
Structure (1), is sequentially provided with sand blasting apparatus (2), device for painting (3), cutter sweep (4) and water-cooled dress above feed mechanism (1)
Put (5)；
Described sand blasting apparatus (2) include shot blast room (201), and stainless steel tube (6) wears shot blast room (201) and mistake, rustless steel
The two ends of pipe (6) are provided with groove protector (202), and groove protector (202) is polyurethane body；Described shot blast room (201)
Lower section be provided with impeller head (203), be provided with through hole (204) between shot blast room (201) and impeller head (203), in impeller head (203)
Portion includes rotating shaft (205), and rotating shaft (205) is provided with pill casting wheel (206)；
Described cutter sweep (4) includes being arranged on the guide rail (401) above feed mechanism (1), is provided with and watches below guide rail (401)
Take motor (402), the outfan of servomotor (402) is engaged with guide rail (401), servomotor (402) is provided with infrared ray and passes
Sensor (403)；It is provided with cylinder (404), the external part of cylinder (404) is provided with cutting wheel (405), cuts below servomotor (402)
Cut wheel (405) and include wheel body (406), below wheel body (406), be provided with three cutting blades (407) be arrangeding in parallel；
Described water cooling plant (5) includes soaking water tank (506), soaks water tank (506) both sides and is respectively provided with arc port (501),
Stainless steel tube (6) runs through arc port (501) and mistake；It is provided with casing (502), under casing below described immersion water tank (506)
(502) it is provided with water pump (503) in, water pump (503) is connected with circulation pipe (504), the outlet of circulation pipe (504) and immersion water tank
(506) it is connected；Described soak water tank (506) side be provided with spray water tank (507), upper spray water tank (507) be connected with into
Water pipe (505), is provided with mouth spray (508) below upper spray water tank (507).
2. stainless steel tube three-layer polypropylene anti-corrosion pipe according to claim 1 manufacturing equipment it is characterised in that：Described
Feed mechanism (1) includes the rotary shaft (102) being connected with motor (101), and rotary shaft (102) forward direction has inclination angle, turns
Moving axis (102) is provided with wheel group (103), and the outside of wheel group (103) is arranged with polyurethane layer (104).
3. equipment according to claim 1 or claim 2 using method it is characterised in that：Comprise the following steps successively；
(1), groove protector on the set of the two ends of stainless steel tube, then stainless steel tube is placed in the wheel group of feed mechanism, wheel group
Rotate and transmit stainless steel tube to shot blast room；
(2), Motor drive pill casting wheel rotates, and abrasive material passes through ball blast impeller blade, abrasive material is formed the form throwing camber line, and via through holes hit
Get to steel tube surface, stainless steel tube is eliminated rust；
(3) stainless steel tube rust cleaning completes, and steel pipe is changed one's profession and taken the groove protector at stainless steel tube two ends after stand, then by phase
Adjacent stainless steel tube is connected with adapter successively, then by root, steel pipe placement coating line wheel group is connected into stainless steel tube group；
(4) stainless steel tube group is transmitted through wheel group and is coated polypropylene coating to device for painting, and coating completes to transmit through wheel group again
To cutter sweep；
(5) infrared ray sensor of cutter sweep detects stainless steel tube group and transmits to precalculated position, and cylinder drives three and cuts
Cutting blade declines, and by the coating cut-out between stainless steel tube, the cutting blade of both sides is rotated in stainless for middle cutting blade rotation
Steel pipe two ends ring cutting goes out mark position；Cutting completes exhaust hood and drives the cutting blade of cutting wheel to be lifted off stainless-steel pipe table
Face；
(6) stainless steel tube group is transmitted to water cooling plant through wheel group, enters from the side arc port soaking water tank, opposite side arc
Port passes, and rotates in conveying；Water is evacuated to immersion water tank under casing by water pump, soak water in water tank from arc port with
Gap between stainless steel tube group flows out under casing, make the water yield that water pump pumps be more than soak the water yield that water tank flows out so that
The half volume of stainless steel tube group is immersed in water, carries out the pre-cooling of stainless steel tube group polypropylene coating；
(7) after the opposite side arc port soaking water tank passes, the shower water of upper spray water tank continues to gather to stainless steel tube group
Acrylic coating carries out chilling spray；Stainless steel coating pipe is until operating water outlet cold-room transfers to stand；
(8) take off the adapter connecting stainless steel tube group, remove the polypropylene coating outside the mark position of stainless steel tube two ends, complete
Become the manufacture of stainless steel tube three-layer polypropylene anti-corrosion pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510119234.2A CN104668913B (en) | 2015-03-18 | 2015-03-18 | The manufacturing equipment of stainless steel tube three-layer polypropylene anti-corrosion pipe and its using method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510119234.2A CN104668913B (en) | 2015-03-18 | 2015-03-18 | The manufacturing equipment of stainless steel tube three-layer polypropylene anti-corrosion pipe and its using method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104668913A CN104668913A (en) | 2015-06-03 |
| CN104668913B true CN104668913B (en) | 2017-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510119234.2A Active CN104668913B (en) | 2015-03-18 | 2015-03-18 | The manufacturing equipment of stainless steel tube three-layer polypropylene anti-corrosion pipe and its using method |
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|---|---|---|---|---|
| CN1557624A (en) * | 2004-02-10 | 2004-12-29 | 广州励进新技术有限公司 | Method and apparatus for producing inside and outside anticorrosion steel-plastic composite pipe |
| CN1799818A (en) * | 2006-01-17 | 2006-07-12 | 大庆油田庆新工程材料有限公司 | Anti-corrosion tube and its manufacturing process |
| CN202023998U (en) * | 2011-05-20 | 2011-11-02 | 大庆鲁冀防腐保温钢管制造有限公司 | Three-layer PE (polyurethane) anti-corrosion production line |
| CN103542197A (en) * | 2013-10-15 | 2014-01-29 | 浙江越州防腐工程有限公司 | Anticorrosive coating production line and process for steel pipes |
| CN203797171U (en) * | 2014-04-04 | 2014-08-27 | 江丰管道集团有限公司 | Continuous production system of thermal insulation pipe |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6061444A (en) * | 1983-09-12 | 1985-04-09 | Dainippon Screen Mfg Co Ltd | Method of conveying sheet material to automatic drawing device and device thereof |
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2015
- 2015-03-18 CN CN201510119234.2A patent/CN104668913B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1557624A (en) * | 2004-02-10 | 2004-12-29 | 广州励进新技术有限公司 | Method and apparatus for producing inside and outside anticorrosion steel-plastic composite pipe |
| CN1799818A (en) * | 2006-01-17 | 2006-07-12 | 大庆油田庆新工程材料有限公司 | Anti-corrosion tube and its manufacturing process |
| CN202023998U (en) * | 2011-05-20 | 2011-11-02 | 大庆鲁冀防腐保温钢管制造有限公司 | Three-layer PE (polyurethane) anti-corrosion production line |
| CN103542197A (en) * | 2013-10-15 | 2014-01-29 | 浙江越州防腐工程有限公司 | Anticorrosive coating production line and process for steel pipes |
| CN203797171U (en) * | 2014-04-04 | 2014-08-27 | 江丰管道集团有限公司 | Continuous production system of thermal insulation pipe |
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| CN104668913A (en) | 2015-06-03 |
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Effective date of registration: 20190529 Address after: 313000 West of Shuanglin Town, Huzhou City, Zhejiang Province Patentee after: Zhejiang Jiulite Material Tech. Co., Ltd. Address before: 313012 West Renmin Road, Shuanglin Town, Nanxun District, Huzhou City, Zhejiang Province Patentee before: Zhejiang Jiu Litaihu coating technology Co., Ltd |
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