CN115059807B - Short-length micro-jacking pipe and manufacturing process thereof - Google Patents
Short-length micro-jacking pipe and manufacturing process thereof Download PDFInfo
- Publication number
- CN115059807B CN115059807B CN202210755769.9A CN202210755769A CN115059807B CN 115059807 B CN115059807 B CN 115059807B CN 202210755769 A CN202210755769 A CN 202210755769A CN 115059807 B CN115059807 B CN 115059807B
- Authority
- CN
- China
- Prior art keywords
- pipe
- jacking
- short
- micro
- length
- 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.)
- Active
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 26
- 238000003466 welding Methods 0.000 claims abstract description 25
- 238000007789 sealing Methods 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 13
- 238000005520 cutting process Methods 0.000 claims description 18
- 238000005266 casting Methods 0.000 claims description 9
- 239000004567 concrete Substances 0.000 claims description 8
- 239000004568 cement Substances 0.000 claims description 7
- 230000002706 hydrostatic effect Effects 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 239000003973 paint Substances 0.000 claims description 4
- 238000005498 polishing Methods 0.000 claims description 4
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 3
- 238000000137 annealing Methods 0.000 claims description 3
- 230000001680 brushing effect Effects 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 239000011701 zinc Substances 0.000 claims description 3
- 229910052725 zinc Inorganic materials 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 7
- 229910001141 Ductile iron Inorganic materials 0.000 description 4
- 238000009412 basement excavation Methods 0.000 description 3
- 239000011083 cement mortar Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 238000009750 centrifugal casting Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005536 corrosion prevention Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
- F16L9/153—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups comprising only layers of metal and concrete with or without reinforcement
-
- 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
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The invention discloses a short-scale micro-jacking pipe and a manufacturing process thereof, wherein the short-scale micro-jacking pipe comprises a prefabricated pipe, the inside of the prefabricated pipe is of a three-section ladder-shaped structure, and the three-section ladder-shaped structure is provided with a matched mounting port, a d6 port and a sealing port from outside to inside in sequence; the pipe fitting comprises a body pipe, wherein the body pipe is in a tubular structure, one end of the body pipe is inserted into the matched mounting port and is connected through welding, the pipe fitting is suitable for short-length micro-jacking pipes, the manufacturing process of the short-length micro-jacking pipes is simple, the matched mounting of the prefabricated pipe fitting and the body pipe is equivalent to the jacking force born by the conventional manufacturing jacking pipes, and the construction requirements of the micro-jacking pipes can be met; the process can realize the full utilization of the micro-jacking pipe processing body pipe (namely, when a finished pipe product is cut, the part with the bellmouth structure and the part without the bellmouth structure can be used), thereby greatly reducing the manufacturing cost of the short-length micro-jacking pipe.
Description
Technical Field
The invention belongs to the technical field of ductile cast iron pipes, and particularly relates to a short-length micro-jacking pipe and a manufacturing process thereof.
Background
Traditional excavation pipeline laying causes serious traffic jam and ecological environment destruction, and is restricted by factors such as dense population, high land reclamation cost and the like. The pipe jacking non-excavation construction has the advantages of environmental friendliness, small influence on traffic and living life of living people and the like, and becomes an important component for laying non-excavation pipelines. The spheroidal graphite cast iron jacking pipe is widely adopted due to the advantages of light weight, large pushing bearing capacity, long service life and the like; the nodular cast iron jacking pipe adopts the nodular cast iron pipe as a manufacturing body, the cement mortar is lined in the casting pipe for corrosion prevention, reinforced concrete is wrapped outside to form a casting layer, and the manufacturing is completed after polishing, coating with water paint and packaging.
The short-scale micro-jacking pipe is a jacking pipe with a nominal diameter of DN250-DN600 and an effective length of 1-2 meters or a length required by a customer. In pipe jacking construction, the short-length pipe jacking plays a guiding role in the pipe jacking construction process, so that flexible adjustment of the pipe jacking pipeline following machine head is realized. At present, short-scale micro-jacking pipe machining is carried out in the following two modes: 1. the method is that qualified cast pipes after cement mortar lining are subjected to curing and then cut into required lengths, and a jacking pipe with a socket section is used as a body for jacking pipe manufacture; the rest jacking pipe part is used as waste, the cement lining is removed by smashing the pipe, and then cast iron recycling is performed, so that the cost of the short-length micro jacking pipe is equivalent to that of the micro jacking pipe with the length of 6m, and the cost is high, so that the waste of raw materials is caused. The other mode is to directly cast the pipe of the micro-jacking pipe body, and the mode needs new casting equipment, so that the investment is high; the equipment utilization rate is low; the specification is single, can not realize the preparation of the short-scale micro-push pipe of all length.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a short-length micro-jacking pipe and a manufacturing process thereof.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the short-length micro-jacking pipe comprises a prefabricated pipe fitting, wherein the inside of the prefabricated pipe fitting is of a three-section ladder-shaped structure, and the three-section ladder-shaped structure is provided with a mounting port, a d6 port and a sealing port from outside to inside in sequence;
the body tubular product is of a tubular structure, and one end of the body tubular product is inserted into the matched mounting port and is connected through welding.
In one possible implementation, the inner diameters of the mating mounting port, d6 port and sealing port gradually increase from outside to inside.
In one possible implementation, the sealing opening is embedded with a sealing rubber ring.
In one possible implementation manner, the outer wall of the body pipe is further provided with a pushing piece, one end of the pushing piece is provided with a flange, and a layer of concrete pouring layer is wrapped outside the prefabricated pipe and the connection position of the body pipe and the prefabricated pipe.
In one possible implementation manner, the pushing piece and the flange, the prefabricated pipe fitting and the body pipe, the body pipe and the pushing piece, and the body pipe and the flange are all connected through welding.
The invention also discloses a manufacturing process of the short-scale micro-jacking pipe, which comprises the following specific process flows:
s1, casting a prefabricated pipe fitting;
s2, casting and drawing the pipe through a pipe die, cutting the pipe, and performing annealing treatment, zinc spraying, finishing, hydrostatic test, cement lining and steam curing to obtain a qualified pipe finished product with a socket;
s3, cutting a finished pipe product according to the set length requirement, wherein the cut part is divided into a part with a socket structure and a part without the socket structure, the part with the socket structure is directly used for subsequent processing of the micro-jacking pipe, and the part without the socket structure is a body pipe;
s4, cutting the body pipe into a set length, then installing the body pipe in a matched mode with the prefabricated pipe fitting, and welding to obtain a fitting part;
s5, performing a hydraulic test, and checking the welding reliability of the assembly part;
s6, after the assembly part hydrostatic test is qualified, welding a sleeve cage and a pushing part, and then pouring a cement layer to form a concrete pouring layer, so as to form a short-scale micro-pipe jacking blank;
s7, carrying out steam curing on the short-length micro-pipe jacking blank, and then welding a flange on the outer side of the pushing piece;
and S8, polishing and brushing water-based paint on the short-length micro-jacking pipe blank piece after the flange is installed in the step, so as to prepare the short-length micro-jacking pipe.
In one possible implementation, in the step, the cutting of the finished product of the pipe is required when the short-length micro-jacking pipe is manufactured, and a welding space is reserved when the cutting is performed.
In one possible implementation, the cutting requirements of the finished tube product are as follows: the effective length Lu of the body pipe is 1000-2000mm.
According to the invention, the short-length micro-jacking pipe is simple in manufacturing process, and the matched installation of the prefabricated pipe fitting and the body pipe is equivalent to the jacking force born by the conventional manufacturing jacking pipe, so that the construction requirement of the micro-jacking pipe can be met;
the process can realize the full utilization of the short-scale micro-jacking pipe processing body pipe (namely, when the finished product of the pipe is cut, the part with the socket structure and the part without the socket structure can be used), so that the manufacturing cost of the short-scale micro-jacking pipe is greatly reduced, and meanwhile, the length of the short-scale micro-jacking pipe can be controlled (cutting control is carried out according to the requirement), and the specifications of the short-scale micro-jacking pipe are diversified.
Drawings
FIG. 1 is a schematic view of a prefabricated pipe fitting structure in the present invention;
fig. 2 is a schematic structural view of a short-length micro push pipe according to the present invention.
Reference numerals: 1. prefabricating a pipe fitting; 101. matching with the mounting port; 102. d6 port; 103. sealing the mouth; 104. Sealing rubber rings; 201. a pushing member; 202. a flange; 3. a body pipe; 4. a concrete pouring layer; a. welding spots; lu, effective length.
Detailed Description
The following is a detailed description of a short-length micro-jacking pipe and a manufacturing process thereof according to the present invention with reference to fig. 1-2. The short-length micro-jacking pipe and the manufacturing process thereof are not limited to the description of the following embodiments.
Example 1:
the embodiment provides a concrete structure of a short-length micro-jacking pipe and a manufacturing process thereof, as shown in fig. 1, the short-length micro-jacking pipe comprises a prefabricated pipe fitting 1 and a body pipe 3, wherein the inside of the short-length micro-jacking pipe is of a three-section ladder-shaped structure, and the three-section ladder-shaped structure is provided with a matched mounting port 101, a d6 port 102 and a sealing port 103 from outside to inside in sequence; the body tubular product 3 is in a tubular structure, and one end of the body tubular product 3 is inserted into the matched mounting port 101 and is connected through welding.
The inner diameters of the fitting opening 101, the d6 opening 102 and the sealing opening 103 gradually increase from outside to inside.
Sealing port 103 is embedded with sealing rubber ring 104.
The outer wall of the body pipe 3 is also provided with a pushing piece 201, one end of the pushing piece 201 is provided with a flange 202, and the prefabricated pipe fitting 1 and the connecting position of the body pipe 3 and the prefabricated pipe fitting 1 are externally wrapped with a concrete pouring layer 4.
The pushing piece 201 and the flange 202, the prefabricated pipe fitting 1 and the body pipe 3, the body pipe 3 and the pushing piece 201 and the body pipe 3 and the flange 202 are all connected through welding (a is a welding point, namely a welding point among materials).
Example 2
The invention also discloses a manufacturing process of the short-scale micro-jacking pipe, which comprises the following specific process flows:
s1, casting a prefabricated pipe fitting 1;
s2, casting and drawing the pipe through a pipe die, cutting the pipe, and performing annealing treatment, zinc spraying, finishing, hydrostatic test, cement lining and steam curing to obtain a qualified pipe finished product with a socket;
s3, cutting a pipe finished product according to the set length requirement, wherein the cut part is divided into a part with a socket structure and a part without the socket structure, the part with the socket structure is directly used for subsequent processing of the micro-jacking pipe, and the part without the socket structure is the body pipe 3;
s4, cutting the body pipe 3 into a set length, then installing the body pipe in a matched mode with the prefabricated pipe 1, and welding to obtain an assembly part;
s5, performing a hydraulic test, and checking the welding reliability of the assembly part;
s6, after the assembly part hydrostatic test is qualified, welding a sleeve cage and the pushing piece 201, and then pouring a cement layer to form a concrete pouring layer 4, so as to form a short-scale micro-pipe jacking blank;
s7, after steam curing is carried out on the short-length micro-pipe jacking blank, welding a flange 201 on the outer side of the pushing piece 201;
and S8, polishing and brushing water-based paint on the short-length micro-jacking pipe blank provided with the flange 201 in the step S7 to prepare the short-length micro-jacking pipe.
In one possible implementation manner, in step S2, the pipe product needs to be cut when the short-length micro-jacking pipe is manufactured, and a welding space is reserved when the cutting is performed.
In one possible implementation, the cutting requirements of the finished tube product are as follows: the effective length Lu of the body tube 3 is 1000-2000mm.
The short-length micro-jacking pipe manufacturing process is simple in combination with the embodiment 1-2 and is applicable to the matched installation of the jacking pipe specification DN250-DN600 and the prefabricated pipe fitting 1 and the body pipe 3, has the jacking force which can be born by the conventional manufacturing jacking pipe, can meet the construction requirement of the micro-jacking pipe, can realize the full utilization of the micro-jacking pipe processing body pipe (namely, when the finished pipe product is cut, the part with the bellmouth structure and the part without the bellmouth structure can be used), and greatly reduces the manufacturing cost of the short-length micro-jacking pipe.
The invention can utilize the conventional (6 m) centrifuge tube drawing machine to draw the body tube without constructing special centrifugal casting equipment, thereby reducing equipment investment, being applicable to construction and reconstruction of water supply and drainage pipe network and greatly reducing investment.
The foregoing is a further detailed description of the invention in connection with the preferred embodiments, and it is not intended that the invention be limited to the specific embodiments described. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the invention, and these shall be considered to be within the scope of the invention.
Claims (4)
1. A manufacturing process of a short-length micro-jacking pipe is characterized by comprising the following steps of: the specific process flow is as follows:
(S1) casting a prefabricated pipe fitting (1);
(S2) casting and drawing the pipe by a pipe die, cutting the pipe, and performing annealing treatment, zinc spraying, finishing, hydrostatic test, cement lining and steam curing to obtain a qualified pipe finished product with a socket;
(S3) cutting the finished pipe product according to the set length requirement, wherein the cut part is divided into a part with a bellmouth structure and a part without the bellmouth structure, the part with the bellmouth structure is directly used for subsequent processing of the micro-jacking pipe, and the part without the bellmouth structure is the body pipe (3);
(S4) cutting the body pipe (3) into a set length, then installing the body pipe in a matched mode with the prefabricated pipe (1), and welding the prefabricated pipe to obtain a fitting part;
(S5) performing a hydrostatic test to check the welding reliability of the assembly;
(S6) after the assembly part hydrostatic test is qualified, welding a sleeve cage and a pushing piece (201), and then pouring a cement layer to form a concrete pouring layer (4) so as to form a short-length micro-jacking pipe blank;
(S7) welding a flange (202) on the outer side of the pushing piece (201) after steam curing is carried out on the short-length micro-pipe jacking blank;
(S8) polishing and brushing water-based paint on the short-scale micro-jacking pipe blank piece after the flange (202) is mounted in the step (S7) to prepare a short-scale micro-jacking pipe;
in the step (S3), cutting is required to be carried out on a finished product of the pipe when the short-length micro-jacking pipe is manufactured, and a welding space is reserved when cutting is carried out;
the short-length micro jacking pipe comprises:
the inside of the prefabricated pipe fitting (1) is of a three-section ladder-shaped structure, and the three-section ladder-shaped structure is provided with a matched mounting port (101), a d6 port (102) and a sealing port (103) from outside to inside in sequence;
the body pipe (3) is of a tubular structure, and one end of the body pipe (3) is inserted into the matched mounting port (101) and is connected through welding;
the pushing piece (201) is connected with the flange (202), the prefabricated pipe fitting (1) is connected with the body pipe (3), the body pipe (3) is connected with the pushing piece (201) and the body pipe (3) is connected with the flange (202) through welding;
the cutting requirements of the pipe finished product are as follows: the effective length Lu of the body pipe (3) is 1000-2000mm;
the body pipe is drawn by a conventional 6m centrifuge tube drawing machine.
2. The process for manufacturing the short-length jacking pipe according to claim 1, wherein the process comprises the following steps of: the inner diameters of the matched mounting port (101), the d6 port (102) and the sealing port (103) are gradually increased from outside to inside.
3. The process for manufacturing the short-length jacking pipe according to claim 1, wherein the process comprises the following steps of: and a sealing rubber ring (104) is embedded in the sealing opening (103).
4. The process for manufacturing the short-length jacking pipe according to claim 1, wherein the process comprises the following steps of: the outer wall of the body pipe (3) is further provided with a pushing piece (201), one end of the pushing piece (201) is provided with a flange (202), and the prefabricated pipe (1) and the connection position of the body pipe (3) and the prefabricated pipe (1) are externally wrapped with a layer of concrete pouring layer (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210755769.9A CN115059807B (en) | 2022-06-30 | 2022-06-30 | Short-length micro-jacking pipe and manufacturing process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210755769.9A CN115059807B (en) | 2022-06-30 | 2022-06-30 | Short-length micro-jacking pipe and manufacturing process thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115059807A CN115059807A (en) | 2022-09-16 |
| CN115059807B true CN115059807B (en) | 2024-02-13 |
Family
ID=83204629
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210755769.9A Active CN115059807B (en) | 2022-06-30 | 2022-06-30 | Short-length micro-jacking pipe and manufacturing process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115059807B (en) |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0014474A1 (en) * | 1979-02-09 | 1980-08-20 | Vereinigte Metallwerke Ranshofen-Berndorf AG | Method for the production of a tube |
| US4949895A (en) * | 1984-01-31 | 1990-08-21 | Sumitomo Light Metal Industries, Ltd. | Process of fixing internally titanium-lined doubled-walled tubing structure to titanium tube sheet |
| CN2313995Y (en) * | 1997-12-25 | 1999-04-14 | 陈万春 | Prefabricated steel hoop for steel cylinder concrete pipe |
| CN201428864Y (en) * | 2009-06-30 | 2010-03-24 | 天津万联管道工程有限公司 | Concrete pipe with leak-proof sealed steel bell and spigot |
| CN204962071U (en) * | 2015-09-22 | 2016-01-13 | 山东龙泉管道工程股份有限公司 | Embed -type prestressing force steel cylinder concrete pipe of complete anticorrosive straight drinking water |
| WO2016038602A1 (en) * | 2014-09-10 | 2016-03-17 | Mekorot Water Company, Ltd. | Integrated jacking pipe |
| CN205877455U (en) * | 2016-06-16 | 2017-01-11 | 云南省楚雄恒基管道工业有限责任公司 | Prestressing force steel cylinder concrete pipe |
| CN205978860U (en) * | 2016-09-07 | 2017-02-22 | 栾超 | Compound pipe of two rubber circle socket joint formula steel pipe concrete |
| JP2019011775A (en) * | 2017-06-29 | 2019-01-24 | 日本ニューロン株式会社 | Connection pipe, and method for laying the same |
| CN110886912A (en) * | 2019-12-31 | 2020-03-17 | 黄石新兴管业有限公司 | Pipeline device of nodular cast iron jacking pipe, jacking pipe mold and preparation method of jacking pipe mold |
| CN111637277A (en) * | 2020-05-25 | 2020-09-08 | 辽宁爱维尔金属成型科技股份有限公司 | Internal-acting type nodular cast iron jacking pipe for whole trenchless pipeline construction |
| CN211693842U (en) * | 2019-12-25 | 2020-10-16 | 安阳钢铁股份有限公司 | Nodular cast iron jacking pipe for jacking pipe construction |
| CN111940691A (en) * | 2020-08-07 | 2020-11-17 | 安钢集团永通球墨铸铁管有限责任公司 | Manufacturing process of double-bellmouth nodular cast iron pipe |
| CN112032418A (en) * | 2020-08-31 | 2020-12-04 | 金华巨龙管道有限公司 | Prestressed steel cylinder concrete pipe |
| CN213712150U (en) * | 2020-11-13 | 2021-07-16 | 安钢集团永通球墨铸铁管有限责任公司 | Connecting device for jacking pipe of nodular cast iron pipe |
| CN216843385U (en) * | 2022-03-28 | 2022-06-28 | 福建台明铸管科技股份有限公司 | Socket joint formula steel ejector pipe |
-
2022
- 2022-06-30 CN CN202210755769.9A patent/CN115059807B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0014474A1 (en) * | 1979-02-09 | 1980-08-20 | Vereinigte Metallwerke Ranshofen-Berndorf AG | Method for the production of a tube |
| US4949895A (en) * | 1984-01-31 | 1990-08-21 | Sumitomo Light Metal Industries, Ltd. | Process of fixing internally titanium-lined doubled-walled tubing structure to titanium tube sheet |
| CN2313995Y (en) * | 1997-12-25 | 1999-04-14 | 陈万春 | Prefabricated steel hoop for steel cylinder concrete pipe |
| CN201428864Y (en) * | 2009-06-30 | 2010-03-24 | 天津万联管道工程有限公司 | Concrete pipe with leak-proof sealed steel bell and spigot |
| WO2016038602A1 (en) * | 2014-09-10 | 2016-03-17 | Mekorot Water Company, Ltd. | Integrated jacking pipe |
| CN204962071U (en) * | 2015-09-22 | 2016-01-13 | 山东龙泉管道工程股份有限公司 | Embed -type prestressing force steel cylinder concrete pipe of complete anticorrosive straight drinking water |
| CN205877455U (en) * | 2016-06-16 | 2017-01-11 | 云南省楚雄恒基管道工业有限责任公司 | Prestressing force steel cylinder concrete pipe |
| CN205978860U (en) * | 2016-09-07 | 2017-02-22 | 栾超 | Compound pipe of two rubber circle socket joint formula steel pipe concrete |
| JP2019011775A (en) * | 2017-06-29 | 2019-01-24 | 日本ニューロン株式会社 | Connection pipe, and method for laying the same |
| CN211693842U (en) * | 2019-12-25 | 2020-10-16 | 安阳钢铁股份有限公司 | Nodular cast iron jacking pipe for jacking pipe construction |
| CN110886912A (en) * | 2019-12-31 | 2020-03-17 | 黄石新兴管业有限公司 | Pipeline device of nodular cast iron jacking pipe, jacking pipe mold and preparation method of jacking pipe mold |
| CN111637277A (en) * | 2020-05-25 | 2020-09-08 | 辽宁爱维尔金属成型科技股份有限公司 | Internal-acting type nodular cast iron jacking pipe for whole trenchless pipeline construction |
| CN111940691A (en) * | 2020-08-07 | 2020-11-17 | 安钢集团永通球墨铸铁管有限责任公司 | Manufacturing process of double-bellmouth nodular cast iron pipe |
| CN112032418A (en) * | 2020-08-31 | 2020-12-04 | 金华巨龙管道有限公司 | Prestressed steel cylinder concrete pipe |
| CN213712150U (en) * | 2020-11-13 | 2021-07-16 | 安钢集团永通球墨铸铁管有限责任公司 | Connecting device for jacking pipe of nodular cast iron pipe |
| CN216843385U (en) * | 2022-03-28 | 2022-06-28 | 福建台明铸管科技股份有限公司 | Socket joint formula steel ejector pipe |
Non-Patent Citations (1)
| Title |
|---|
| 铸铁管在顶管工程中的应用;孙九成;工业建筑(04);51-57 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115059807A (en) | 2022-09-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101994877A (en) | Lining-type reinforced concrete anticorrosion compound pipeline | |
| CN101619779B (en) | Sealing device for buried pipe connected with protective well | |
| CN115059807B (en) | Short-length micro-jacking pipe and manufacturing process thereof | |
| CN202825037U (en) | Moving type steel cylinder assembly machine | |
| CN204062219U (en) | A kind of ductile iron pipe with composite anti-corrosive coating | |
| CN112555522A (en) | Steel socket composite reinforced concrete lining glass fiber reinforced plastic drain pipe and preparation method thereof | |
| CN103775100A (en) | Prefabricated assembled urban comprehensive pipe gallery | |
| CN206874975U (en) | A kind of water string | |
| CN216009832U (en) | Municipal administration drainage is with prefabricated composite tube structure | |
| CN205479852U (en) | Heavy -calibre T type interface block cast nodular cast -iron pipe spare | |
| CN210218935U (en) | Spigot-and-socket joint reinforced concrete pipe | |
| CN209414799U (en) | A kind of pressure-bearing concrete duct of jacking construction method | |
| CN209164891U (en) | A kind of corrosion resistant high-intensitive plastic pipe for underground engineering | |
| CN207740579U (en) | Reinforced concrete sewer pipe connection structure | |
| CN214889396U (en) | Pouring mould for outer openings of pipeline well and discharge flue | |
| CN216279838U (en) | Pipeline for jacking construction | |
| CN215410695U (en) | Special-shaped sleeve | |
| CN109163149B (en) | Lining epoxy ceramic nodular cast iron composite pipe and manufacturing method thereof | |
| CN216046075U (en) | Sleeve type PCCP three-way pipe fitting | |
| CN212984028U (en) | Novel integrated pump station based on submersible electric pump | |
| CN220416515U (en) | Non-pushing flange spheroidal graphite cast iron jacking pipe double-socket connector | |
| CN213839859U (en) | Novel funnel formula ball china ink pipe | |
| CN220506061U (en) | Short jacking pipe of external epoxy plain end block casting nodular cast iron | |
| CN215334973U (en) | Cast iron composite pipe | |
| CN214579385U (en) | Special pipe jacking pipe material for welding-free sewage discharge steel pipe |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |