CN1569427A - Novel circulating use method for residual grout of PHC pipe pile - Google Patents
Novel circulating use method for residual grout of PHC pipe pile Download PDFInfo
- Publication number
- CN1569427A CN1569427A CN 200410037492 CN200410037492A CN1569427A CN 1569427 A CN1569427 A CN 1569427A CN 200410037492 CN200410037492 CN 200410037492 CN 200410037492 A CN200410037492 A CN 200410037492A CN 1569427 A CN1569427 A CN 1569427A
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- Prior art keywords
- slurry
- phc
- surplus
- surplus slurry
- tubular pile
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- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 50
- 239000011440 grout Substances 0.000 title 1
- 239000000463 material Substances 0.000 claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000002002 slurry Substances 0.000 claims description 126
- 238000004519 manufacturing process Methods 0.000 claims description 32
- 239000002994 raw material Substances 0.000 claims description 12
- 239000007787 solid Substances 0.000 claims description 10
- 150000001875 compounds Chemical class 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 7
- 238000010790 dilution Methods 0.000 claims description 3
- 239000012895 dilution Substances 0.000 claims description 3
- 239000003292 glue Substances 0.000 abstract 3
- 238000011109 contamination Methods 0.000 abstract 1
- 239000004576 sand Substances 0.000 description 9
- 238000009740 moulding (composite fabrication) Methods 0.000 description 7
- 239000004567 concrete Substances 0.000 description 6
- 239000004568 cement Substances 0.000 description 4
- 239000003638 chemical reducing agent Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 238000003912 environmental pollution Methods 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 239000000470 constituent Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000011513 prestressed concrete Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- -1 rubble Substances 0.000 description 1
- 239000003469 silicate cement Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000009955 starching Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Landscapes
- Processing Of Solid Wastes (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
Abstract
The invention discloses a new PHC pipe pile residual pulp circular using method. It includes following processes: (1) the residual pulp generated after the centrifugal process in process of PHC pipe; (2) the collected residual pulp is confected with water; (3) the confected residual pulp and the other material for PHC pipe are mixed together, the total quantity of glue material in residual pulp is consistent to the quantity of glue material in supplementary material; (4) the mixed material is produced according to the PHC pipe producing process; (5) the residual pulp generated in the process enters the next circulation. The method can reduce the consumption of glue condensing material, and it has no contamination to environment.
Description
Technical field
The surplus slurry that the present invention relates to a kind of novel PHC pile tube reclaims technology.
Background technology
At present, PHC pile tube (superelevation strength prestressed concrete pile tube) output is huge.The raw material of PHC pile tube is made up of gelling material cement, levigate sand and water, the water reducer etc. of a slit between the river sand, stone and the filler aggregate that constitute aggregate and a coagulation, and its concrete strength will reach the C80 grade.In its production process, each raw material be stirred the preparation compound by prescription with stirrer, then the compound feeding be gone in the pile tube punching block, pass through processes such as prestressed reinforcement of tensioning, centrifugal forming and vapor cure again.In the PHC tubular pile production process, isolated surplus slurry has also brought immense pressure to society thereupon during centrifugal forming.The treatment process of existing surplus slurry has two kinds substantially, the most frequently used practice is that surplus slurry is directly discharged, owing to contain the gelling material that a lot of production PHC pile tubes are used in the surplus slurry, thus the method for this direct discharging serious environment pollution not only, and caused the waste of resource.Therefore, how to effectively utilize surplus slurry, and prevent the pollution of the environment and caused everybody concern.Therefore produced another surplus slurry treatment process, be about to surplus slurry and be used to make the aerating stripping and slicing.Though this mode has solved problem of environmental pollution, and makes refuse obtain utilization, also have following problems: still owing to aerating stripping and slicing small scale, so utilize benefit not high, technology is difficult for promoting (1); (2) surplus slurry is used for aerated blocks production from producing to, because surplus slurry generation reaches the distance problem with two production sites, must cause its residence time longer because of processes such as the collection of surplus slurry, conveyings, cause condensing and precipitating of gelling material, surplus slurry can not in time be utilized in the best time, its usefulness is not fully exerted.(3) this processing mode also needs to acquire equipment in addition, causes input cost to increase, and this kind method can produce the secondary slag, so this method is not a kind of more satisfactory surplus slurry treatment process.
Summary of the invention
Gelling material used in the production of existing P HC pile tube is based on silicate cement and levigate sand, so fundamental component is the powdery water reducer and the river sand of water, hydrated cementitious product, levigate sand and small portion in the surplus slurry that produces behind the centrifugal forming in the PHC tubular pile production process.The research surface, wherein water accounts for the 25-40% of surplus slurry total mass, and effective constituent is that gelling material accounts for 50-60% in the surplus slurry.No matter being water or gelling material, all is to produce the required raw material of PHC pile tube.Be based on the recognition, the present inventor has invented a kind of novel PHC residual slurry of tubular pile and has recycled method through a large amount of research and repetition test, has not only reduced environmental pollution, and has saved ample resources.
Novel PHC residual slurry of tubular pile provided by the invention recycles method and comprises following process:
(1) the surplus slurry that centrifugal back in the PHC tubular pile production process is produced is collected into container;
(2) the surplus slurry water after will collecting is allocated homogenizing, so that it has enough flowabilities and be difficult for precipitation, and is easy to carry;
(3) the surplus slurry after will allocating and other raw material of producing the PHC pile tube that needs to replenish add stirrer and stir into and meet the compound that the PHC pile tube requires, and the total amount and the prescription of mixed materials of the gelling material in the gelling material in the surplus slurry of adding and the additional raw material are consistent;
(4) compound is carried out the production of PHC pile tube by PHC pile tube production technique;
(5) the surplus slurry of centrifugal generation enters next circulation by above-mentioned steps (1)-(4) in the production process.
In the aforesaid method, step (1)-(3) used time is advisable to be no more than 30 minutes, and the time is short more good more, and the gelling material that the time passes in the surplus slurry of a specified duration is easily condensed, and can influence PHC pile tube quality.For example can reduce the capacity of adorning surplus slurry container limits.
In the described step (1), the surplus slurry after the collection can stir with whipping appts, to avoid in the surplus slurry gelling material to condense or precipitation to occur, guarantees the conveying of surplus slurry, particularly uses pump delivery.
In the above-mentioned step (2), the preferred mode that surplus slurry is allocated is that the concentration of the surplus slurry after the allotment is consistent in whole process of production.Its advantage is: produce load in process of production and can occur changing, the surplus slurry solid content of centrifugal process generation has fluctuation like this, if can be consistent substantially through the surplus slurry concentration after the dilution allotment, then can overcome basically and produce the influence of load surplus slurry quality, both guarantee the quality of PHC pile tube, be convenient to calculate and control surplus slurry usage quantity again.
Preferred implementation as above-mentioned steps of the present invention (2) is: at first measure the density or the concentration of surplus slurry, determine that according to surplus slurry concentration the water yield water allotment of adding is until reaching predetermined concentration.For determining of predetermined concentration, comparatively ideal concentration is to guarantee that surplus slurry can dilute, guarantee again can not make surplus slurry surplus cause accumulation, grow with the residence time of avoiding surplus slurry too much to cause and now condense or precipitate, also avoid the superfluous appearance of surplus slurry to discharge because of surplus slurry is too rare.For example Zui Jia mode is every production 1m
3The surplus slurry that concrete the produces Total Water that surplus slurry contains after the allotment dilution just in time is to produce 1m
3The water consumption that concrete is required, can guarantee so basically surplus slurry can surplus also can not have slurry available.
Because have partial impurities and quality to have fluctuation in the solid content of surplus slurry, the gelling material that contains in the concrete when guaranteeing that surplus slurry recycles is enough, should determine according to following formula when determining the effective gelling material in the surplus slurry when surplus slurry is added stirrer in proportion:
Total solid content * assurance coefficient in effective gelling material=surplus slurry in the surplus slurry
Above-mentioned assurance coefficient is generally 90%-95%, by this assurance coefficient, guarantees that promptly concrete gelling material enough again can be not too much.
Novel PHC residual slurry of tubular pile of the present invention recycles method, the surplus slurry that produces in the PHC tubular pile production process is recycled as part of raw materials, effective ingredient in the surplus slurry is utilized again, not only can reduce the raw material consumption, reduce the wasting of resources, can reduce the environmental pollution that causes because of the direct discharging of surplus slurry simultaneously.Use present method to produce the PHC pile tube, cement consumption can reduce 7-10%, has brought huge economic benefit.In addition, this mode technology is simple, is easy to control.
Description of drawings
Fig. 1 recycles the schema of method for novel PHC residual slurry of tubular pile of the present invention.
Embodiment
Below in conjunction with specific embodiment novel PHC residual slurry of tubular pile of the present invention being recycled method is described further.
With reference to shown in Figure 1, it is as follows that the PHC residual slurry of tubular pile recycles method:
The initial production process: will produce the raw material of PHC pile tube, for example river sand, rubble, cement, levigate sand, water reducer, water are pressed the prescription consumption adding stirrer of PHC pile tube.In stirrer, be mixed into compound; Produce the PHC pile tube through processes such as feeding, stretch-draw and centrifugal formings.Stirrer stirring, feeding, stretch-draw and centrifugal forming are existing P HC pile tube production technique, are not described in detail in the present embodiment, and these are known for those skilled in the art.
Collect surplus slurry, add the water homogenizing: produce surplus slurry in the centrifugal forming operation, the surplus slurry that produces in the centrifugal forming process is collected into surplus slurry bucket.Influence with pump delivery and use in order to prevent that gelling material is condensed and precipitated in the surplus slurry, will stir with whipping appts in the surplus slurry bucket.Simultaneously, in surplus slurry bucket, add entry allotment homogenizing,, will often measure the concentration of surplus slurry in the surplus slurry bucket in the production process, adjust a barrel interior concentration by regulating amount of water to prevent in the surplus slurry solid precipitation and to condense to predetermined concentration.The predetermined concentration of the interior surplus slurry of surplus slurry bucket is consistent substantially in the whole process of production, to guarantee its steady concentration.Surplus slurry measurement of concetration can directly be measured with instrument, also can measure its density, because the density and the proportional relation of its solid content of surplus slurry, according to drawing the surplus solid content of starching surplus slurry in the bucket by the density of test determination and the corresponding relation of solid content, or be called solids concn, promptly surplus slurry concentration.
Its predetermined concentration can be determined by following formula:
Metering: the surplus slurry that reaches predetermined concentration in the surplus slurry bucket is sent in the stirrer after producing the metering of concrete prescription requirement process.The gauging tank that metering adopts band to weigh carries out, and the surplus slurry in the surplus slurry bucket is squeezed into gauging tank with pump, weighs the surplus slurry of required weight with weighing, then with in the surplus slurry adding stirrer.When producing when highly stable, comparatively ideal mode be the surplus slurry that produces in the production process after adding the water homogenizing in the surplus slurry water-content just in time be the consumption that next round is produced required water, each streams is substantially invariable like this, is convenient to operation more.Because production fluctuation of load and the difference of producing the required prescription of product of different size, be the continous-stable that guarantees to produce, available to prevent not having slurry, when water-content in the surplus slurry is not enough to the consumption of the required water of next round production is provided, also to add a certain amount of water, after the available gauging tank metering water be added in the stirrer.So gauging tank can be one, not only be used for measuring water but also be used for measuring surplus slurry, also can be used for measuring water and surplus slurry respectively for two.
Owing to contain small amount of impurities in the surplus slurry, for guaranteeing the gelling material abundance, when determining the consumption of used surplus slurry comparatively ideal mode be according in the surplus slurry effective level of effective constituent gelling material amount calculate, the content that is about to the solid matter that contained in the surplus slurry multiply by an assurance coefficient, and its coefficient is by 93%.
According to the amount of effective gelling material contained in the surplus slurry to be added, carry out next cycle P HC pile tube by the requirement calculating of the prescription of producing the PHC pile tube and produce required other additional new raw material, for example consumptions such as cement, levigate sand, river sand.Enter the next round production process with quantitative above-mentioned new raw material and by surplus slurry and the stirring of water adding stirrer that gauging tank measures.
Should control the continous-stable of production line in the production process, surplus like this slurry neither can be accumulated feeding-up, and it is available also can not have slurry.Used surplus slurry owing in circulation, produce each bar pile tube, after centrifugal, toppled over surplus slurry again, production department produces the identical streamline and the production technique of PHC pile tube employing of same specification simultaneously, so the composition and the character of the surplus slurry that surplus slurry that adds and centrifugal back produce are essentially identical, weight is the same basically.At this moment the needed water of hydrated cementitious is just brought in the effect of surplus slurry in full cycle into, and the water reducer of promptly just having brought into use is equivalent to the catalyzer of chemical reaction.By control to producing, there is not unnecessary surplus slurry discharging in the whole like this process, 100% surplus slurry all is repeated recycle.
During all stopping using, in time clean surplus slurry bucket and transport pipe.
Claims (9)
1, a kind of novel PHC residual slurry of tubular pile recycles method, comprises following process:
(1) the surplus slurry that centrifugal back in the PHC tubular pile production process is produced is collected into container;
(2) the surplus slurry water after will collecting is allocated homogenizing;
(3) the surplus slurry after will allocating and other raw material of producing the PHC pile tube that needs to replenish add stirrer and stir into and meet the compound that the PHC pile tube requires, and the total amount and the prescription of mixed materials of the gelling material in the gelling material in the surplus slurry of adding and the additional raw material are consistent;
(4) compound is carried out the production of PHC pile tube by PHC pile tube production technique;
(5) the surplus slurry of centrifugal generation enters next circulation by above-mentioned steps (1)-(4) in the production process.
2, novel PHC residual slurry of tubular pile as claimed in claim 1 recycles method, and step (1)-(3) used time is no more than 30 minutes.
3, novel PHC residual slurry of tubular pile as claimed in claim 1 recycles method, and in the described step (1), the surplus slurry after the collection stirs with whipping appts.
4, novel PHC residual slurry of tubular pile as claimed in claim 1 recycles method, and the concocting method of surplus slurry is in the described step (2): at first measure the density or the concentration of surplus slurry, determine that according to surplus slurry concentration the water yield water allotment of adding is until reaching predetermined concentration.
5, novel PHC residual slurry of tubular pile as claimed in claim 4 recycles method, and the predetermined concentration of described surplus slurry allotment is determined by following formula:
6, recycle method as claim 4 or 5 described novel PHC residual slurry of tubular pile, the predetermined concentration in the whole process of production after the surplus slurry dilution is consistent.
7, novel PHC residual slurry of tubular pile as claimed in claim 1 recycles method, in the described step (3) in the surplus slurry gelling material multiply by assurance coefficient by total solids material content in the surplus slurry that adds.
8, novel PHC residual slurry of tubular pile as claimed in claim 7 recycles method, and described assurance coefficient is 90%-95%.
9, novel PHC residual slurry of tubular pile as claimed in claim 1 recycles method, and described step (2) is finished in surplus slurry bucket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100374928A CN100335257C (en) | 2004-05-09 | 2004-05-09 | Novel circulating use method for residual grout of PHC pipe pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100374928A CN100335257C (en) | 2004-05-09 | 2004-05-09 | Novel circulating use method for residual grout of PHC pipe pile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1569427A true CN1569427A (en) | 2005-01-26 |
| CN100335257C CN100335257C (en) | 2007-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100374928A Expired - Lifetime CN100335257C (en) | 2004-05-09 | 2004-05-09 | Novel circulating use method for residual grout of PHC pipe pile |
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| CN (1) | CN100335257C (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101235638B (en) * | 2008-01-07 | 2010-06-02 | 中山市三和建材有限公司 | Concrete pipe pile |
| CN101240545B (en) * | 2008-01-07 | 2010-06-02 | 中山市三和建材有限公司 | (Ultra)high-strength prestressing concrete pipe pile |
| CN101269520B (en) * | 2007-03-23 | 2011-03-23 | 上海亿航工贸发展有限公司 | Method for producing concrete building block by using pipe pile wastewater slurry |
| CN101269519B (en) * | 2007-03-23 | 2011-04-06 | 上海亿航工贸发展有限公司 | Method for producing water conservancy concrete wrest block and four-pin hollow block by using pipe pile wastewater slurry |
| CN103711196A (en) * | 2012-09-04 | 2014-04-09 | 天津港保税区航保商品砼供应有限公司 | Grout recovering system |
| CN104816377A (en) * | 2015-04-08 | 2015-08-05 | 安徽乾元管业有限公司 | Concrete pipe pile production technology capable of recycling residual grout |
| CN105666675A (en) * | 2014-11-07 | 2016-06-15 | 山东鲁泰建材科技集团有限公司 | Comprehensive utilization technology for residual cement slurry resources of electric poles |
| CN106079071A (en) * | 2016-06-27 | 2016-11-09 | 湖北昌耀新材料股份有限公司 | A kind of recycling method of remaining slurry in tubulose cement concrete product |
| CN106606953A (en) * | 2015-10-26 | 2017-05-03 | 宁波金美亚池州管桩有限公司 | Waste stirring device |
| CN106607994A (en) * | 2015-10-26 | 2017-05-03 | 宁波金美亚池州管桩有限公司 | Waste material recovery and stirring system |
| CN109400017A (en) * | 2018-10-08 | 2019-03-01 | 江门市新会华源管桩有限公司 | A method of enhancing residual slurry of tubular pile mobility |
| CN110341042A (en) * | 2019-07-22 | 2019-10-18 | 漳州市禹丰水泥制品有限公司 | A kind of method of the device and its recycling of residual slurry of tubular pile recycling |
| CN114693033A (en) * | 2020-12-30 | 2022-07-01 | 揭阳市华誉电子科技有限公司 | A kind of calculation method of chemical industry formula |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2031740U (en) * | 1988-06-17 | 1989-02-01 | 罗桂生 | Set of equipments for producing dry greenbricks |
| CN2274120Y (en) * | 1996-01-08 | 1998-02-11 | 许新乐 | Continuous forming machine for composite fire-rertardant decorative plate |
| IT1299540B1 (en) * | 1998-07-01 | 2000-03-16 | Memc Electronic Materials | PROCEDURE TO SEPARATE AND REGENERATE WASTE ABRASIVE BASED ON GLYCOL AND SILICON CARBIDE FOR THE PURPOSE OF THEIR REUSE |
| CN1112485C (en) * | 1999-06-07 | 2003-06-25 | 张树峰 | Cast-in-situ method for forming piles by drilling hole and pouring grout |
-
2004
- 2004-05-09 CN CNB2004100374928A patent/CN100335257C/en not_active Expired - Lifetime
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101269520B (en) * | 2007-03-23 | 2011-03-23 | 上海亿航工贸发展有限公司 | Method for producing concrete building block by using pipe pile wastewater slurry |
| CN101269519B (en) * | 2007-03-23 | 2011-04-06 | 上海亿航工贸发展有限公司 | Method for producing water conservancy concrete wrest block and four-pin hollow block by using pipe pile wastewater slurry |
| CN101235638B (en) * | 2008-01-07 | 2010-06-02 | 中山市三和建材有限公司 | Concrete pipe pile |
| CN101240545B (en) * | 2008-01-07 | 2010-06-02 | 中山市三和建材有限公司 | (Ultra)high-strength prestressing concrete pipe pile |
| CN103711196A (en) * | 2012-09-04 | 2014-04-09 | 天津港保税区航保商品砼供应有限公司 | Grout recovering system |
| CN105666675A (en) * | 2014-11-07 | 2016-06-15 | 山东鲁泰建材科技集团有限公司 | Comprehensive utilization technology for residual cement slurry resources of electric poles |
| CN104816377A (en) * | 2015-04-08 | 2015-08-05 | 安徽乾元管业有限公司 | Concrete pipe pile production technology capable of recycling residual grout |
| CN106606953A (en) * | 2015-10-26 | 2017-05-03 | 宁波金美亚池州管桩有限公司 | Waste stirring device |
| CN106607994A (en) * | 2015-10-26 | 2017-05-03 | 宁波金美亚池州管桩有限公司 | Waste material recovery and stirring system |
| CN106079071A (en) * | 2016-06-27 | 2016-11-09 | 湖北昌耀新材料股份有限公司 | A kind of recycling method of remaining slurry in tubulose cement concrete product |
| CN106079071B (en) * | 2016-06-27 | 2018-12-21 | 湖北昌耀新材料股份有限公司 | A kind of recycling and reusing method of remaining slurry in tubulose cement concrete product |
| CN109400017A (en) * | 2018-10-08 | 2019-03-01 | 江门市新会华源管桩有限公司 | A method of enhancing residual slurry of tubular pile mobility |
| CN110341042A (en) * | 2019-07-22 | 2019-10-18 | 漳州市禹丰水泥制品有限公司 | A kind of method of the device and its recycling of residual slurry of tubular pile recycling |
| CN110341042B (en) * | 2019-07-22 | 2021-01-19 | 漳州市禹丰水泥制品有限公司 | Device for recycling residual slurry of tubular pile and recycling method thereof |
| CN114693033A (en) * | 2020-12-30 | 2022-07-01 | 揭阳市华誉电子科技有限公司 | A kind of calculation method of chemical industry formula |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100335257C (en) | 2007-09-05 |
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| C56 | Change in the name or address of the patentee |
Owner name: GUANGDONG SANHE TUBULAR PILE CO., LTD. Free format text: FORMER NAME: ZHONGSHAN SANHE BUILDING MATERIALS CO., LTD. |
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| CP03 | Change of name, title or address |
Address after: Tongxing road 528414 Guangdong city of Zhongshan Province Dongsheng Town, No. 28 Patentee after: GUANGDONG SANHE TUBULAR PILE Co.,Ltd. Address before: With the road 528414 Guangdong city of Zhongshan Province Dongsheng Town, No. 168 Patentee before: ZHONGSHAN SANHE BUILDING MATERIALS Co.,Ltd. |
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Address after: Tongxing road 528414 Guangdong city of Zhongshan Province Dongsheng Town, No. 28 Patentee after: GUANGDONG SANHE PILES Co.,Ltd. Address before: Tongxing road 528414 Guangdong city of Zhongshan Province Dongsheng Town, No. 28 Patentee before: GUANGDONG SANHE TUBULAR PILE Co.,Ltd. |
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| CX01 | Expiry of patent term |
Granted publication date: 20070905 |
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| CX01 | Expiry of patent term |