CN104677241A - Pccp pipe diameter measuring device - Google Patents
Pccp pipe diameter measuring device Download PDFInfo
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- CN104677241A CN104677241A CN201510109371.8A CN201510109371A CN104677241A CN 104677241 A CN104677241 A CN 104677241A CN 201510109371 A CN201510109371 A CN 201510109371A CN 104677241 A CN104677241 A CN 104677241A
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- movable block
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Abstract
The invention discloses a PCCP pipe diameter measuring device. The PCCP pipe diameter measuring device comprises a fixed cylinder, a limiting cylinder which is mounted in the fixed cylinder, a truncated cone-shaped moving block and a fixed seat; a steel ball is rotatably arranged at the bottom of the limiting cylinder; the steel ball is partially protruded from the bottom end of the fixed cylinder; a spring is mounted in the fixed cylinder; the moving block is connected with the free end of the spring and is connected with the fixed seat through a graduated scale; a plurality of bulges are formed on the outer wall of the moving block; a plurality of grooves which are matched with the bulges are formed in the inner wall of the fixed cylinder; a rolling ball is rotatably arranged on the upper surface of the fixed seat. When the axis of the fixed cylinder is overlapped with the straight line in which the diameter of a pipeline is positioned, the data on the graduated scale is read, and is the displacement generated by the linear movement of the moving block; the inside diameter of the pipeline can be obtained by calculating, namely subtracting the linear displacement of the moving block from the linear distance between the bottom end of the steel ball and the top end of the rolling ball.
Description
Technical field
The present invention relates to a kind of measurement mechanism, specifically refer to PCCP pipe diameter measuring device.
Background technology
PCCP pipe is the strong concrete tube core winding compressor wire with steel cylinder; spray is with cement mortar protective course; adopt steel bell and spigot; welded together with steel cylinder; fluted and the cushion rubber of bell and spigot defines the flexible joint of slidingtype cushion rubber; be the composite structure of steel plate, concrete, high tensile steel wire and sand-cement slurry different materials composition, there is steel and concrete characteristic separately.Prestressed concrete cylinder pipe have compound structure, bear the characteristics such as interior external pressure is higher, joint tighness good, shock resistance is strong, easy to maintenance, pay close attention to by engineering circles, be widely used in long interval water conveying tunnel, pressure inverted-siphon, urban water supply engineering, industry pressure water conveyer pipeline, electric power plant circulating water engineering sewer pipe, pressure blowdown main etc.The advantages such as compared with tubing in the past, PCCP has applied widely, and the economic life is long, anti-seismic performance good, easy for installation, to run expenditure low, substantially water-tight.
At present after PCCP pipe production completes, micrometer inside caliper is generally adopted to measure pipe internal diameter and bell and spigot ovality.Micrometer inside caliper is made up of micrometer head and extension bar, turns varying dimensions, inconvenient operation because micrometer head armrest is dynamic, and reading is not directly perceived, fragile in high-frequency service condition.And micrometer inside caliper acquisition price is higher.
Summary of the invention
The object of the present invention is to provide PCCP pipe diameter measuring device, conveniently measuring error is reduced to the Quick Measurement of internal diameter of the pipeline simultaneously, and then reach object that is efficient, that accurately measure.
Object of the present invention is achieved through the following technical solutions:
PCCP pipe diameter measuring device, comprise stationary magazine creel and be arranged on the position-limiting drum in stationary magazine creel, the lower rotation of described position-limiting drum is provided with steel ball, and described steel ball local protrudes from the bottom of stationary magazine creel, in stationary magazine creel, spring is installed, also comprise movable block and the holder of the truncated cone-shaped be connected with the movable end of described spring, described movable block is connected with holder by rule, the outer wall of movable block is provided with multiple projection, the inwall of described stationary magazine creel offers multiple groove matched with projection, the upper surface of described holder rotates and is provided with ball, movable chamber is had in described holder, the bottom-hinged in movable chamber is provided with U-shaped support member, and two of U-shaped support member movable ends are through holder, ball is between two movable ends of U-shaped support member, the inwall in movable chamber is fixed with two pressure transducers, described pressure transducer is just to the two ends of pressure transducer horizontal component, the leg that end is circular arc is also provided with in the both sides of steel ball.When the present invention works, stationary magazine creel all can be placed in inner-walls of duct by transverse direction or longitudinal direction, the station of adjustment stationary magazine creel makes it to keep vertical or level, the steel ball be positioned at bottom the ball at holder top and stationary magazine creel contacts with inner-walls of duct respectively, and rule drives movable block to do rectilinear motion in stationary magazine creel after being subject to the extruding of inner-walls of duct; When movable block moves in position-limiting drum, movable block starts to compress spring, and movable block is up big and down small truncated conical shape, the outer wall of movable block is fixed with multiple projection, in position-limiting drum, offer multiple groove matched with projection simultaneously, namely movable block continues to move down under the guiding of groove, effectively prevent rule in measuring process, in stationary magazine creel, sidesway occurs, the internal diameter size of the non-pipeline of the data namely preventing rule from measuring but higher in the size of internal diameter of the pipeline; When the axis of stationary magazine creel and the straight line at pipe diameter place coincide, read the data on rule, these data are the displacement that movable block does rectilinear motion generation, by calculating, namely the air line distance on steel ball bottom and ball top deducts the size that straight-line displacement that movable block occurs can draw internal diameter of the pipeline.
Wherein, for accelerating the level of device on inner-walls of duct or at right angle setting further, the present invention offers movable chamber in holder, the two ends of the hinged U-shaped support member be arranged in movable chamber can realize with the movement of ball moving up and down, the both sides of steel ball are fixed with the leg that end is circular arc again, when the overall placement level of device or vertical time, the surface of the movable end of U-shaped support member and the top of ball, and steel ball contacts with inner-walls of duct respectively completely with the end of leg, and the two ends of U-shaped support member keep balance, and the bottom of U-shaped support member horizontal component can not come in contact with pressure transducer, when the placement of device entirety does not meet level or is vertical, the two ends of U-shaped support member are by force unbalance, namely U-shaped support member horizontal component two ends for a moment with pressure sensor contacts, its force-bearing situation spreads out of for the concrete placement location of the timely recognition device of operating personnel by pressure transducer, facilitate it to regulate in time, avoid stationary magazine creel and holder skew occurs and causes the data error of measurement bigger than normal.
Also comprise down-pressed pole, the two ends of described down-pressed pole are connected with movable block, holder respectively, and the rotation of described rule is arranged on down-pressed pole.Be placed on after in inner-walls of duct at stationary magazine creel, need to carry out certain adjustment to ball and steel ball to keep overlapping with the diameter of pipeline with assurance device entirety, therefore rule reading difficulty increases after adjustment, the present invention is equipped with down-pressed pole between movable block and holder, rule rotates and is arranged on down-pressed pole, directly can rotate rule when reading to ensure its good observation visual angle, what be convenient for measuring carries out fast.
Also comprise displacement transducer, institute's displacement sensors is fixed on the bottom of movable block.When pipeline local needs to measure more accurately, the distance that moves down of movable block can accurately be measured, by compared with the reading on rule, after repetitive measurement by the displacement transducer be positioned at bottom movable block, by calculating the minimum value of an error, measurement demand can be met.
Described position-limiting drum is truncated cone-shaped, and the internal diameter of position-limiting drum successively decreases along the direction in the sensing steel ball center of circle, the center of circle of ball.As preferably, position-limiting drum inwall has the groove matched with projection, and the internal diameter of position-limiting drum successively decreases along the direction in the sensing steel ball center of circle, the center of circle of ball, namely after movable block moves down certain distance, projection cannot continue to move in groove, and then effectively prevent excessively moving down of movable block and cause rule stress deformation, ensure the accuracy of measurement data.
The present invention compared with prior art, has following advantage and beneficial effect:
1, the present invention is when movable block moves in position-limiting drum, movable block starts to compress spring, and movable block is up big and down small truncated conical shape, the outer wall of movable block is fixed with multiple projection, in position-limiting drum, offer multiple groove matched with projection simultaneously, namely movable block continues to move down under the guiding of groove, effectively prevent rule in measuring process, in stationary magazine creel, sidesway occurs, the internal diameter size of the non-pipeline of the data namely preventing rule from measuring but higher in the size of internal diameter of the pipeline; When the axis of stationary magazine creel and the straight line at pipe diameter place coincide, read the data on rule, these data are the displacement that movable block does rectilinear motion generation, by calculating, namely the air line distance on steel ball bottom and ball top deducts the size that straight-line displacement that movable block occurs can draw internal diameter of the pipeline;
2, the present invention is placed on after in inner-walls of duct at stationary magazine creel, need to carry out certain adjustment to ball and steel ball to keep overlapping with the diameter of pipeline with assurance device entirety, therefore rule reading difficulty increases after adjustment, the present invention is equipped with down-pressed pole between movable block and holder, rule rotates and is arranged on down-pressed pole, directly can rotate rule when reading to ensure its good observation visual angle, what be convenient for measuring carries out fast;
3, the present invention has the groove matched with projection on position-limiting drum inwall, and the internal diameter of position-limiting drum successively decreases along the direction in the sensing steel ball center of circle, the center of circle of ball, namely after movable block moves down certain distance, projection cannot continue to move in groove, and then effectively prevent excessively moving down of movable block and cause rule stress deformation, ensure the accuracy of measurement data.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide the further understanding to the embodiment of the present invention, forms a application's part, does not form the restriction to the embodiment of the present invention.In the accompanying drawings:
Fig. 1 is structural representation of the present invention;
Fig. 2 is the sectional view of movable block;
Mark and corresponding parts title in accompanying drawing:
1-ball, 2-holder, 3-down-pressed pole, 4-rule, 5-stationary magazine creel, 6-movable block, 7-projection, 8-position-limiting drum, 9-spring, 10-steel ball, 11-displacement transducer, 12-U shape support member, 13-pressure transducer, 14-leg.
Embodiment
Clearly understand for making the object, technical solutions and advantages of the present invention, below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, and exemplary embodiment of the present invention and explanation thereof are only for explaining the present invention, not as a limitation of the invention.
Embodiment 1
As depicted in figs. 1 and 2, the present embodiment comprises stationary magazine creel 5 and is arranged on the position-limiting drum 8 in stationary magazine creel 5, the lower rotation of described position-limiting drum 8 is provided with steel ball 10, and described steel ball 10 local protrudes from the bottom of stationary magazine creel 5, spring 9 is installed in stationary magazine creel 5, also comprise movable block 6 and the holder 2 of the truncated cone-shaped be connected with the movable end of described spring 9, described movable block 6 is connected with holder 2 by rule 4, the outer wall of movable block 6 is provided with multiple protruding 7, the inwall of described stationary magazine creel 5 offers multiple grooves matched with projection 7, the upper surface of described holder 2 rotates and is provided with ball 1, movable chamber is had in described holder 2, the bottom-hinged in movable chamber is provided with U-shaped support member 12, and two of U-shaped support member 12 movable ends are through holder 2, ball 1 is between two movable ends of U-shaped support member 12, the inwall in movable chamber is fixed with two pressure transducers 13, described pressure transducer 13 is just to the two ends of pressure transducer 13 horizontal component, the leg 14 that end is circular arc is also provided with in the both sides of steel ball 10.
When the present invention works, stationary magazine creel 5 all can be placed in inner-walls of duct by transverse direction or longitudinal direction, the station of adjustment stationary magazine creel 5 makes it to keep vertical or level, the steel ball 10 be positioned at bottom the ball 1 at holder 2 top and stationary magazine creel 5 contacts with inner-walls of duct respectively, and rule 4 drives movable block 6 to do rectilinear motion in stationary magazine creel 5 after being subject to the extruding of inner-walls of duct; When movable block 6 moves in position-limiting drum 8, movable block 6 starts to compress spring 9, and movable block 6 is up big and down small truncated conical shape, the outer wall of movable block 6 is fixed with multiple protruding 7, in position-limiting drum 8, offer multiple grooves matched with projection 7 simultaneously, namely movable block 6 continues to move down under the guiding of groove, effectively prevent rule 4 in measuring process, in stationary magazine creel 5, sidesway occurs, the internal diameter size of the non-pipeline of the data namely preventing rule 4 from measuring but higher in the size of internal diameter of the pipeline; When the axis of stationary magazine creel 5 and the straight line at pipe diameter place coincide, read the data on rule 4, these data are the displacement that movable block 6 does rectilinear motion generation, by calculating, namely the air line distance on steel ball 10 bottom and ball 1 top deducts the size that straight-line displacement that movable block 6 occurs can draw internal diameter of the pipeline.
Wherein, for accelerating the level of device on inner-walls of duct or at right angle setting further, the present invention offers movable chamber in holder 2, the two ends of the hinged U-shaped support member 12 be arranged in movable chamber can realize moving up and down with the movement of ball 1, the both sides of steel ball 10 are fixed with the leg 14 that end is circular arc again, when the overall placement level of device or vertical time, the surface of the movable end of U-shaped support member 12 and the top of ball 1, and steel ball 10 contacts with inner-walls of duct respectively completely with the end of leg 14, and the two ends of U-shaped support member 12 keep balance, and the bottom of U-shaped support member 12 horizontal component can not come in contact with pressure transducer 13, when the placement of device entirety does not meet level or is vertical, the two ends of U-shaped support member 12 are by force unbalance, i.e. for a moment the contacting with pressure transducer 13 of two ends of U-shaped support member 12 horizontal component, its force-bearing situation spreads out of for the concrete placement location of the timely recognition device of operating personnel by pressure transducer 13, facilitate it to regulate in time, avoid stationary magazine creel 5 and holder 2 skew occurs and causes the data error of measurement bigger than normal.
Also comprise down-pressed pole 3 and displacement transducer 11, the two ends of described down-pressed pole 3 are connected with movable block 6, holder 2 respectively, and described rule 4 rotation is arranged on down-pressed pole 3, and institute's displacement sensors 11 is fixed on the bottom of movable block 6.Be placed on after in inner-walls of duct at stationary magazine creel 5, need to carry out certain adjustment to ball 1 and steel ball 10 to keep overlapping with the diameter of pipeline with assurance device entirety, therefore rule 4 reading difficulty increases after adjustment, the present invention is equipped with down-pressed pole 3 between movable block 6 and holder 2, rule 4 rotates and is arranged on down-pressed pole 3, directly can rotate rule 4 when reading to ensure its good observation visual angle, what be convenient for measuring carries out fast; When pipeline local needs to measure more accurately, the distance that moves down of movable block 6 can accurately be measured, by compared with the reading on rule 4, after repetitive measurement by the displacement transducer 11 be positioned at bottom movable block 6, by calculating the minimum value of an error, measurement demand can be met.
As preferably, position-limiting drum 8 inwall has and protruding 7 grooves matched, and the internal diameter of position-limiting drum 8 successively decreases along the direction in sensing steel ball 10 center of circle, the center of circle of ball 1, namely after movable block 6 moves down certain distance, protruding 7 cannot continue to move in groove, and then effectively prevent excessively moving down and causing rule 4 stress deformation of movable block 6, ensure the accuracy of measurement data.
Above-described embodiment; object of the present invention, technical scheme and beneficial effect are further described; be understood that; the foregoing is only the specific embodiment of the present invention; the protection domain be not intended to limit the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1.PCCP pipe diameter measuring device, comprise stationary magazine creel (5) and be arranged on the position-limiting drum (8) in stationary magazine creel (5), it is characterized in that: the lower rotation of described position-limiting drum (8) is provided with steel ball (10), and described steel ball (10) local protrudes from the bottom of stationary magazine creel (5), spring (9) is installed in stationary magazine creel (5), also comprise movable block (6) and the holder (2) of the truncated cone-shaped be connected with the movable end of described spring (9), described movable block (6) is connected with holder (2) by rule (4), the outer wall of movable block (6) is provided with multiple projection (7), the inwall of described stationary magazine creel (5) offers multiple groove matched with protruding (7), the upper surface of described holder (2) rotates and is provided with ball (1), movable chamber is had in described holder (2), the bottom-hinged in movable chamber is provided with U-shaped support member (12), and two movable ends of U-shaped support member (12) are through holder (2), ball (1) is positioned between two movable ends of U-shaped support member (12), the inwall in movable chamber is fixed with two pressure transducers (13), described pressure transducer (13) is just to the two ends of pressure transducer (13) horizontal component, the leg (14) that end is circular arc is also provided with in the both sides of steel ball (10).
2. PCCP pipe diameter measuring device according to claim 1, it is characterized in that: also comprise down-pressed pole (3), the two ends of described down-pressed pole (3) are connected with movable block (6), holder (2) respectively, and described rule (4) rotation is arranged on down-pressed pole (3).
3. PCCP pipe diameter measuring device according to claim 1, is characterized in that: also comprise displacement transducer (11), and institute's displacement sensors (11) is fixed on the bottom of movable block (6).
4. the PCCP pipe diameter measuring device according to claim 1 ~ 3 any one, is characterized in that: described position-limiting drum (8) is truncated cone-shaped, and the internal diameter of position-limiting drum (8) successively decreases along the direction in sensing steel ball (10) center of circle, the center of circle of ball (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510109371.8A CN104677241B (en) | 2015-03-13 | 2015-03-13 | PCCP pipe diameter measuring devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510109371.8A CN104677241B (en) | 2015-03-13 | 2015-03-13 | PCCP pipe diameter measuring devices |
Publications (2)
| Publication Number | Publication Date |
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| CN104677241A true CN104677241A (en) | 2015-06-03 |
| CN104677241B CN104677241B (en) | 2017-08-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510109371.8A Expired - Fee Related CN104677241B (en) | 2015-03-13 | 2015-03-13 | PCCP pipe diameter measuring devices |
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| CN (1) | CN104677241B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105021106A (en) * | 2015-08-11 | 2015-11-04 | 苏州莱测检测科技有限公司 | Excircle and distance measuring device |
| CN110017757A (en) * | 2019-04-24 | 2019-07-16 | 邢台海裕锂能电池设备有限公司 | High-precision roll diameter of roller measuring device |
| CN111678448A (en) * | 2020-06-17 | 2020-09-18 | 江苏南水科技有限公司 | Miniaturized pop-up fiber bragg grating joint meter and packaging method |
| CN112629373A (en) * | 2021-01-05 | 2021-04-09 | 黄祖华 | Accurate measuring device of pipeline internal diameter and roughness of autonomic adjustment support position |
| CN114396910A (en) * | 2022-01-19 | 2022-04-26 | 王军 | Aperture microspur clearance measuring device |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61254801A (en) * | 1985-05-07 | 1986-11-12 | Toshiba Corp | Inner-diameter measuring instrument |
| DE4235140A1 (en) * | 1992-10-19 | 1994-04-21 | Schwenk Oskar Gmbh & Co Kg | Two point bore measuring instrument for radial measuring of dia. of circular hole - uses twin diametrical contact body with respective measuring or counter points contacting bore wall by spherical contact units |
| CN2854493Y (en) * | 2005-11-29 | 2007-01-03 | 宝山钢铁股份有限公司 | Multifunction measuring appliance |
| JP2011038814A (en) * | 2009-08-07 | 2011-02-24 | Toa Grout Kogyo Co Ltd | Pipe inner-diameter measuring device |
| CN201795755U (en) * | 2010-08-30 | 2011-04-13 | 常州市第八纺织机械有限公司 | Internal diameter measuring instrument |
| CN201903304U (en) * | 2010-12-13 | 2011-07-20 | 江苏瑞特回转支承有限公司 | Rolling way measuring device |
| CN102196832A (en) * | 2008-10-24 | 2011-09-21 | 巴克斯特国际公司 | Infusion pump and method of in situ measuring the diameter of an infusion tube |
| CN102539025A (en) * | 2010-10-22 | 2012-07-04 | 精工爱普生株式会社 | Detection device, electronic apparatus, and robot |
| CN103195412A (en) * | 2013-03-21 | 2013-07-10 | 丹东东方测控技术有限公司 | Mechanical underground caliper probe and application method |
-
2015
- 2015-03-13 CN CN201510109371.8A patent/CN104677241B/en not_active Expired - Fee Related
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61254801A (en) * | 1985-05-07 | 1986-11-12 | Toshiba Corp | Inner-diameter measuring instrument |
| DE4235140A1 (en) * | 1992-10-19 | 1994-04-21 | Schwenk Oskar Gmbh & Co Kg | Two point bore measuring instrument for radial measuring of dia. of circular hole - uses twin diametrical contact body with respective measuring or counter points contacting bore wall by spherical contact units |
| CN2854493Y (en) * | 2005-11-29 | 2007-01-03 | 宝山钢铁股份有限公司 | Multifunction measuring appliance |
| CN102196832A (en) * | 2008-10-24 | 2011-09-21 | 巴克斯特国际公司 | Infusion pump and method of in situ measuring the diameter of an infusion tube |
| JP2011038814A (en) * | 2009-08-07 | 2011-02-24 | Toa Grout Kogyo Co Ltd | Pipe inner-diameter measuring device |
| CN201795755U (en) * | 2010-08-30 | 2011-04-13 | 常州市第八纺织机械有限公司 | Internal diameter measuring instrument |
| CN102539025A (en) * | 2010-10-22 | 2012-07-04 | 精工爱普生株式会社 | Detection device, electronic apparatus, and robot |
| CN201903304U (en) * | 2010-12-13 | 2011-07-20 | 江苏瑞特回转支承有限公司 | Rolling way measuring device |
| CN103195412A (en) * | 2013-03-21 | 2013-07-10 | 丹东东方测控技术有限公司 | Mechanical underground caliper probe and application method |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105021106A (en) * | 2015-08-11 | 2015-11-04 | 苏州莱测检测科技有限公司 | Excircle and distance measuring device |
| CN110017757A (en) * | 2019-04-24 | 2019-07-16 | 邢台海裕锂能电池设备有限公司 | High-precision roll diameter of roller measuring device |
| CN111678448A (en) * | 2020-06-17 | 2020-09-18 | 江苏南水科技有限公司 | Miniaturized pop-up fiber bragg grating joint meter and packaging method |
| CN112629373A (en) * | 2021-01-05 | 2021-04-09 | 黄祖华 | Accurate measuring device of pipeline internal diameter and roughness of autonomic adjustment support position |
| CN114396910A (en) * | 2022-01-19 | 2022-04-26 | 王军 | Aperture microspur clearance measuring device |
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| CN104677241B (en) | 2017-08-11 |
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Address after: Hoi Industrial Zone, Xindu District of Chengdu City Road 610000 in Sichuan Province Applicant after: CHENGDU GAOFENG PETROLEUM MACHINERY Co.,Ltd. Address before: Hoi Industrial Zone, Xindu District of Chengdu City Road 610000 in Sichuan Province Applicant before: CHENGDU DAMO PETROLEUM MACHINERY GROUP Co.,Ltd. |
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Inventor after: Wang Qing Inventor before: He Changming |
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Effective date of registration: 20170704 Address after: 402460 Industrial Park, Rongchang District, Chongqing Applicant after: CHONGQING JULONG PIPE INDUSTRY Co.,Ltd. Address before: Hoi Industrial Zone, Xindu District of Chengdu City Road 610000 in Sichuan Province Applicant before: CHENGDU GAOFENG PETROLEUM MACHINERY Co.,Ltd. |
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