CN1072129A - Manufacturing method of pipe - Google Patents
Manufacturing method of pipe Download PDFInfo
- Publication number
- CN1072129A CN1072129A CN 91110477 CN91110477A CN1072129A CN 1072129 A CN1072129 A CN 1072129A CN 91110477 CN91110477 CN 91110477 CN 91110477 A CN91110477 A CN 91110477A CN 1072129 A CN1072129 A CN 1072129A
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- Prior art keywords
- pipeline
- internal mold
- concrete
- garden
- pour
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- 239000004567 concrete Substances 0.000 claims abstract description 58
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 45
- 239000010959 steel Substances 0.000 claims abstract description 45
- 238000000034 method Methods 0.000 claims abstract description 16
- 239000011241 protective layer Substances 0.000 claims abstract description 11
- 230000002787 reinforcement Effects 0.000 claims abstract description 6
- 238000009434 installation Methods 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 238000007493 shaping process Methods 0.000 claims description 5
- 210000003625 skull Anatomy 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims description 5
- 238000005260 corrosion Methods 0.000 claims description 4
- 230000007797 corrosion Effects 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 2
- 239000004568 cement Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 4
- 235000011194 food seasoning agent Nutrition 0.000 description 7
- 239000000284 extract Substances 0.000 description 6
- 230000032258 transport Effects 0.000 description 5
- 238000002360 preparation method Methods 0.000 description 3
- 239000011150 reinforced concrete Substances 0.000 description 3
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 210000003205 muscle Anatomy 0.000 description 2
- 239000011083 cement mortar Substances 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000009415 formwork Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000011344 liquid material Substances 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Images
Landscapes
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
Abstract
Manufacturing method of pipe is to make pipeline with the method for vibrating compacting.Its advantage is: need be few with equipment, and concrete water-cement ratio is little, saves cement, and cost is low; Vibrating compacting concrete strength height, the pipeline bearing capacity is big; Horizontal making pipeline, two ends have the annulus location, and pipeline wall thickness is even; Replace the reinforcement fabrication pipeline with steel plate, steel are all play at both direction in length and breadth effect, and the saving steel of making the best use of everything, steel plate play the external mold effect and save template, and protective layer is done after the pipeline typing again, protects effective.
Description
The present invention relates to problems such as the preparation method of pipeline and required facility.
The preparation method of existing pipeline has and outstandingly is rolled into several different methods such as type, centrifugal forming, and pipeline quality is good, but need many with equipment, the cost height; If with simple device fabrication pipeline, quality does not reach requirement again, wall unevenness is even, and bearing capacity is low.
The purpose of this invention is to provide some new manufacturing method of pipe, remedy the defective of existing manufacturing method of pipe.
The object of the present invention is achieved like this: the inside and outside mould of pipeline is stood on the ground, pour into concrete and cover annular pressing plate, vibrating mould also with mechanical pressure garden ring, shakes the compacting pipeline; Or on the arc topotype, adorn two arcs, and open us above, two ends link with it with the garden ring, again internal mold are passed through caliber hole installation in position, pour into concrete and adhere to the internal mold vibrating forming with electromagnetic shaker; Or on the topotype of arc, adorn two arcs, and open us above, two ends are attached thereto (having a garden ring to slide along arc) with the garden ring, internal mold is passed through caliber hole installation in position, pour into concrete and cover panel, the vibrations internal mold also with mechanical pressure garden ring, shakes the compacting pipeline; Or at topotype top-pour one layer concrete of half garden shape, the pipeline reinforcing bar of welding or colligation shaping is imbedded in the concrete (the plain concrete pipe does not have this procedure), internal mold is pierced in the steel reinforcement cage, two garden rings are contained in the internal mold two ends, water internal mold top half garden concrete again, half garden tubular external mold is covered, and the vibrations internal mold also with mechanical pressure garden ring, shakes the compacting pipeline; Or the steel plate that is welded into tubulose or loudspeaker tubulose stood on the ground or crouch on support, again internal mold is put in the tubulose steel plate, pour into concrete and cover garden ring-shaped pressuring plate (horizontal two skulls), the vibrations internal mold also encircles with mechanical pressure garden, vibrations compacting pipeline, and then make protective layer (corrosion resistant plate can not done); Steel plate can be pressed with decorative pattern in length and breadth, strengthens steel plate and concrete cementitiousness and shear resistance; By purposes several sections pipeline weldings are got up to form all size electric pole.
The present invention makes pipeline with the method for vibrations compacting need be few with equipment, and concrete water-cement ratio is little, saves cement, and cost is low; Vibrations compacted concrete intensity height, the pipeline bearing capacity is big; Horizontal making pipeline, there is the garden loop mapping at two ends, and pipeline wall thickness is even; Replace the reinforcement fabrication pipeline with steel plate, steel are all play at both direction in length and breadth has effect, the saving steel of making the best use of everything; steel plate plays the external mold effect and saves template; can make the impervious ability that concrete improves pipeline with self-stressing cement again, protective layer is done after the pipeline setting again, protects effective.
Specific practice of the present invention is provided by following embodiment and accompanying drawing.
Fig. 1 is vertical making pipeline profile, the 1st, and the tubulose internal mold, 2 is external molds that two and half garden tubes are formed, the 3rd, the garden ring-shaped pressuring plate, the 4th, transmit press member, the 5th, jack, the 6th, steel wire rope, the 7th, cross-arm.Fig. 2 is simple and easy lifting gear, the 11st, and vertical rod, the 12nd, cross bar, the 13rd, rotating disk, the 14th, steel wire rope, the 15th, cable wind rope.Fig. 3 is the arc formwork elevation, the 21st, and arc, hole 22 is left at two ends.Fig. 4 is the A-A profile.Fig. 5 is an end mould elevation, and two hole 22 corresponding connecting plates 23 with arc are respectively stretched out on both sides, are drilled with hole 24, leave the hole identical with internal diameter of the pipeline 25.Fig. 6 is the B-B profile.Fig. 7 is a pipeline external mold installation diagram, upright arc shown in Figure 3 32 on the curved surface topotype of arc, the hole 22 usefulness pins 33 that two end moulds shown in Figure 5 inserted arc are fixing, load onto another piece arc at another side again, fix with pin, external mold is just assembled and has been finished.Fig. 8 is the profile after shaping is smash in the pipeline shake, the 32nd, and arc, the 34th, arc topotype, the 35th, tubulose internal mold.Fig. 9 is another kind of pipeline external mold installation diagram, and upright end mould 31 shown in Figure 5 on the curved surface topotype of arc is inserted in two arcs shown in Figure 3 32 connecting plate 23 of holding mould, fixing with pin 33, load onto garden ring-shaped pressuring plate 36 at the other end again, clamp with anchor clamps 37, external mold is just assembled and has been finished.Figure 10 is the profile after the pipe vibration compacting, the 32nd, and arc, the 35th, tubulose internal mold, the 38th, curved cover plate, the 34th, topotype.Figure 11 is the profile after the another kind of pipe vibration compacting, the 41st, and the tubulose internal mold, 42 is half garden tubular external molds, the 43rd, bolt, 44 is half garden shape curved surface topotypes.Figure 12 is the profile after the compacting of steel plate concrete pipe vibration, the 51st, and tubulose internal mold, the 52nd, tubulose steel plate, the 53rd, garden ring-shaped pressuring plate.Figure 13 is the profile after the steel plate concrete pipeline is made completion, the 52nd, and tubulose steel plate, the 54th, protective layer.Figure 14 is the pipeline template locator, is welded by rectangle reinforcing bar 61 and steel hoop 62.Figure 15 is the C-C profile.Figure 16 is the profile after the steel plate concrete bell-and-spigot pipe vibrations compacting, the 71st, and loudspeaker tubulose internal mold, the 72nd, loudspeaker tubulose steel plate, the 73rd, garden ring-shaped pressuring plate.
The method of vertical making pipeline as shown in Figure 1, the inside and outside mould of pipeline is stood in (electromagnetic shaker is contained in the internal mold the inside) on the ground, with locator location shown in Figure 14, pour into the apparatus tamping of end face protective layer concrete, fixing inside and outside mould position, extract locator, put into steel reinforcement cage, pour into concrete again, cover garden ring-shaped pressuring plate 3, load onto force transferring part 4 and jack 5, cross-arm 7 is pressed on the jack, with steel wire rope 6 external mold 2 and cross-arm 7 is linked up, vibration internal mold 1 is also with very heavy roof pressure garden ring 3, vibrations compacting pipeline stops vibration and pressurization after the pipeline moulding; Unload jack, cross-arm, force transferring part and steel wire rope, extract internal mold, take out the garden ring-shaped pressuring plate, remove the just remaining pipeline of external mold and stood on the ground.Again inside and outside mould is stood in and produce another pipeline on the ground.Water seasoning after concrete strength reaches 70%, just can transport out of precasting yard in good time.No muscle manufacturing method of pipe is that interior external mold is stood on the ground, with the locator location, pours into concrete, extracts locator, covers the garden ring-shaped pressuring plate, and the vibrations internal mold also encircles with mechanical pressure garden ring or with the gravity pressure garden, vibrations compacting pipeline.Extracting internal mold can be with cantilever gin pole or other machinery, also available simple and easy lifting gear shown in Figure 2, and cross bar 12 and vertical rod 11 usefulness rotating disks 13 link, and cross bar can rotate around vertical rod, adorns a jack and just can transfer to internal mold on cross bar.
The method of horizontal making pipeline is to adorn two end moulds 31 shown in Figure 5 on the arc-shaped curved surface topotype, and two curved slabs shown in Figure 3 32 are inserted in the connecting plate of holding mould, and is fixing with pin 33, as shown in Figure 7; Again tubulose internal mold 35 by caliber hole installation in position (electromagnetic shaker be contained in internal mold the inside), pour into concrete vibrations internal mold, with arc hawk compacting visual concrete, pipe vibration is promptly extracted internal mold after being shaped, and removes external mold, remaining pipeline crouches on topotype; Again external mold is contained in next section and produces another pipeline.In good time water seasoning, after concrete strength reaches 70%, but just the demoulding transports out of precasting yard.The preparation method that the muscle pipeline is arranged is after external mold installs, and pours into the bottom concrete, and the pipeline reinforcing bar is imbedded concrete, the internal mold installation in position, pour into concrete again, the vibration internal mold is shaped pipe vibration, with arc hawk compacting pipeline exposed parts, as shown in Figure 8.
The method of another kind of horizontal making pipeline is to adorn two end moulds 31 shown in Figure 5 on the arc-shaped curved surface topotype, and two curved slabs shown in Figure 3 32 are inserted in the connecting plate of holding mould, and is fixing with pin 33, as shown in Figure 7; Pour into the bottom concrete, tubulose internal mold 35 by caliber hole installation in position (electromagnetic shaker be contained in internal mold the inside), watering into again, concrete covers panel 38 as shown in figure 10, pressurize and the vibration internal mold around the external mold binding by topotype with steel wire rope, the vibrating compacting pipeline, pipeline is promptly extracted internal mold after being shaped, and removes external mold, and remaining pipeline crouches on topotype; Again external mold is contained in next section and produces another pipeline.In good time water seasoning, after concrete strength reaches 70%, but just the demoulding transports out of precasting yard.
The method of another kind of horizontal making pipeline is to adorn an end mould 31 shown in Figure 5 on the arc-shaped curved surface topotype, two curved slabs shown in Figure 3 32 are inserted in the connecting plate of end mould, fixing with pin 33, the garden ring 36 that leaves the caliber hole is contained in the curved slab other end clamps as shown in Figure 9 with anchor clamps 37; Pour into the bottom concrete, tubulose internal mold 35 by caliber hole installation in position (electromagnetic shaker be contained in internal mold the inside), watering into again, concrete covers curved cover plate 38 as shown in figure 10, in a down-to-earth manner or with bolt binding make topotype and curved slab form a cavity by topotype around the external mold binding with steel wire rope, the vibration internal mold is also with mechanical pressure garden ring 36, and the vibrating compacting pipeline is promptly transferred to internal mold after the pipeline shaping, remove external mold, remaining pipeline crouches on topotype; Again external mold is contained in next section and produces another pipeline.In good time water seasoning, after concrete strength reaches 70%, but just the demoulding transports out of precasting yard.
The method of another kind of horizontal making pipeline is at half garden curved surface or half loudspeaker tubulose topotype top-pour bottom concrete, the pipeline reinforcing bar of welding or colligation shaping is imbedded in the concrete (the plain concrete pipe does not have this procedure), the internal mold of tubulose or loudspeaker tubulose is pierced into (electromagnetic shaker is contained in the internal mold the inside) in the steel reinforcement cage, two garden rings are contained in the internal mold two ends, water internal mold top half garden concrete again, (also can enclose both sides with auxiliary mould, watered concrete roll over again remove), half garden tubular or half loudspeaker tubular external mold are covered, make itself and topotype form a cavity, the vibration internal mold also encircles with mechanical pressure garden, the vibrating compacting pipeline, as shown in figure 11.Pipeline is promptly extracted internal mold after being shaped, and removes external mold, and remaining pipeline crouches on topotype; Produce another pipeline at next section again.In good time water seasoning, after coagulation intensity reaches 70%, but just the demoulding transports out of precasting yard.The internal mold of producing bell-and-spigot pipe also can be combined by head of the trumpet and garden pipe, can be convenient to extract internal mold like this, also is convenient to long line production.
Another kind of method of making pipeline is a steel plate 52 that is welded into tubular is stood on the ground or to crouch on support, tubulose internal mold 51 is put into (electromagnetic shaker is contained in the internal mold the inside) in the tube, insert locator shown in Figure 14, the fixing position of internal mold and steel plate, pour into concrete, extract locator, cover horizontal two skulls of garden ring-shaped pressuring plate 53(), also with mechanical pressure garden ring, the vibrating compacting pipeline as shown in figure 12 for the vibration internal mold; Promptly extract internal mold after pipeline is shaped, water seasoning in good time is when concrete strength reaches the protective layer 54 of doing steel plate 52 after 70% again, as shown in figure 13.
Another kind of method of making bell-and-spigot pipe is that the internal mold 71 of loudspeaker tubular is stood on the steel plate 72 that is inserted in the loudspeaker tubulose on the ground, or the internal mold 71 that the steel plate 72 of loudspeaker tubulose is crouched and pierce into the loudspeaker tubulose on support, (electromagnetic shaker is contained in the internal mold the inside), insert locator shown in Figure 14, fixedly the position of internal mold and steel plate pours into concrete, extract locator, cover horizontal two skulls of garden ring-shaped pressuring plate 73(), also with mechanical pressure garden ring, the vibrating compacting pipeline is as shown in figure 16 for the vibration internal mold; Pipeline is promptly extracted internal mold after being shaped, and water seasoning reaches the protective layer of doing steel plate 72 after 70% again when concrete strength in good time.
But the protective layer rust prevention by applying liquid material of steel plate concrete pipe lacquer or other materials also can be smeared cement mortar, and corrosion resistant plate can not done protective layer again; Pipeline coagulation soil can be made of self-stressing cement, improves the impervious ability of pipeline; At pipe end stirrup is installed, several sections pipelines is connect the electric pole that to form all size again by purposes; Pipeline exerted pressure can adopt the way shown in Figure 1 also can be with electric pushrod or other machinery, vertical making pipeline also can adopt the gravity pressurization; Horizontal making pipeline can be exerted pressure to the garden ring-shaped pressuring plate at two, also can fix the garden ring-shaped pressuring plate of an end and exert pressure at the other end; Swing die can vibrate internal mold also can use other mode of vibrations; To the maintenance of the pipeline natural curing of can watering, also can be topped with coloured film, use solar energy curing, the available again steam press maintenance of steel plate concrete pipeline.The steel plate concrete pipeline can be formed containers such as pond, oil sump again with reinforced concrete floor, can be the combination of prefabricated steel concrete duct and cast-in-situ steel reinforced concrete base plate, can be again that steel plate concrete pipeline and reinforced concrete floor are cast together.
Claims (7)
1, a kind of method of vertical making pipeline is characterized in that: use external mold round internal mold on the ground, pour into concrete and cover annular pressing plate, adhere to inner mould vibration and encircle the vibrating compacting pipeline with mechanical pressure garden with vibrator.
2, a kind of method of horizontal making pipeline is characterized in that: adorn two curved slabs on the arc topotype, two ends link with it with the garden ring, again internal mold are passed through caliber hole installation in position, pour into concrete, adhere to inner mould vibration with vibrator, and pipe vibration is shaped.
3, a kind of method of horizontal making pipeline, it is characterized in that: on the arc topotype, adorn two curved slabs, two ends link with it with the garden ring, again internal mold is passed through caliber hole installation in position, pour into concrete, cover curved panel, bundle sturdy extruded concrete and vibrate internal mold, the vibrating compacting pipeline around curved slab by topotype with steel wire rope.
4, a kind of method of horizontal making pipeline, it is characterized in that: on the arc topotype, adorn two curved slabs, two ends are attached thereto (having a garden ring to slide along curved slab) with the garden ring internal mold are passed through caliber hole installation in position, pour into concrete and cover curved panel, the vibration internal mold is also with mechanical pressure garden ring, vibrating compacting pipeline.
5, a kind of method of horizontal making pipeline, it is characterized in that: at the topotype top-pour bottom concrete of half garden shape or half loudspeaker tubulose, the pipeline reinforcing bar of welding or colligation shaping is imbedded in the concrete (the plain concrete pipeline does not have this procedure), internal mold is pierced in the steel reinforcement cage, two garden rings are contained in the internal mold two ends, water internal mold top half garden concrete again, half garden tubular or half loudspeaker tubulose external mold are covered, the vibration internal mold is also with mechanical pressure garden ring, vibrating compacting pipeline.
6, a kind of method of making pipeline; it is characterized in that: the steel plate that is welded into tubular or loudspeaker tubular is stood on the ground or crouch on support; again internal mold is put in the tube; pour into concrete and cover garden ring-shaped pressuring plate (horizontal two skulls); the vibration internal mold also encircles with mechanical pressure garden; the vibrating compacting pipeline, and then make protective layer (corrosion resistant plate can not done).
7, a kind of method of making electric pole; it is characterized in that: the steel plate that is welded into tubulose is stood on the ground or crouch on support; again internal mold is put in the pipe; pour into concrete and cover garden ring-shaped pressuring plate (horizontal two skulls); the vibration internal mold also encircles with mechanical pressure garden; the vibrating compacting pipeline, and then make protective layer (corrosion resistant plate can not done), by purposes several sections pipeline weldings are got up to form all size electric pole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91110477 CN1072129A (en) | 1991-11-06 | 1991-11-06 | Manufacturing method of pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91110477 CN1072129A (en) | 1991-11-06 | 1991-11-06 | Manufacturing method of pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1072129A true CN1072129A (en) | 1993-05-19 |
Family
ID=4910117
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91110477 Pending CN1072129A (en) | 1991-11-06 | 1991-11-06 | Manufacturing method of pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1072129A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1814462B (en) * | 2006-03-02 | 2010-11-03 | 姜凤和 | Movable two-child support type concrete potted landscape and its making method |
| CN101892724A (en) * | 2010-07-06 | 2010-11-24 | 江苏弘盛建设工程集团有限公司 | Padding block processor |
| CN103085168A (en) * | 2013-02-05 | 2013-05-08 | 北京金盾华通科技有限公司 | Technology producing cement pipe with cement pipe manufacturing equipment |
| CN103144189A (en) * | 2013-02-05 | 2013-06-12 | 中国建筑科学研究院建筑机械化研究分院 | Cement pipe manufacturing device |
| CN103358396A (en) * | 2013-07-31 | 2013-10-23 | 黄金良 | Cement guiding and leaking pipe and producing method thereof |
| CN103568116A (en) * | 2012-07-31 | 2014-02-12 | 江苏邦威机械制造有限公司 | Vertical vibrating die for armor pipes |
| CN103707410A (en) * | 2013-12-31 | 2014-04-09 | 江苏华光双顺机械制造有限公司 | Core mold vibration pipemaking machine vibration rod locking device and installation method thereof |
| CN106914970A (en) * | 2017-03-06 | 2017-07-04 | 成都银线电杆有限公司 | One kind improves concurrent early strength and exempts from steam protecting method |
| CN109676752A (en) * | 2018-12-04 | 2019-04-26 | 叶子鹏 | A kind of honeycombed cement tubulation and its manufacture craft |
| CN112092181A (en) * | 2020-09-10 | 2020-12-18 | 连云港市成盛混凝土构件有限责任公司 | Assembly type prefabricated square culvert forming device and manufacturing process thereof |
-
1991
- 1991-11-06 CN CN 91110477 patent/CN1072129A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1814462B (en) * | 2006-03-02 | 2010-11-03 | 姜凤和 | Movable two-child support type concrete potted landscape and its making method |
| CN101892724A (en) * | 2010-07-06 | 2010-11-24 | 江苏弘盛建设工程集团有限公司 | Padding block processor |
| CN101892724B (en) * | 2010-07-06 | 2012-08-22 | 江苏弘盛建设工程集团有限公司 | Padding block processor |
| CN103568116A (en) * | 2012-07-31 | 2014-02-12 | 江苏邦威机械制造有限公司 | Vertical vibrating die for armor pipes |
| CN103085168B (en) * | 2013-02-05 | 2015-04-08 | 北京金盾华通科技有限公司 | Technology producing cement pipe with cement pipe manufacturing equipment |
| CN103144189A (en) * | 2013-02-05 | 2013-06-12 | 中国建筑科学研究院建筑机械化研究分院 | Cement pipe manufacturing device |
| CN103085168A (en) * | 2013-02-05 | 2013-05-08 | 北京金盾华通科技有限公司 | Technology producing cement pipe with cement pipe manufacturing equipment |
| CN103144189B (en) * | 2013-02-05 | 2015-07-29 | 中国建筑科学研究院建筑机械化研究分院 | Pipe of cement manufacturing equipment |
| CN103358396A (en) * | 2013-07-31 | 2013-10-23 | 黄金良 | Cement guiding and leaking pipe and producing method thereof |
| CN103358396B (en) * | 2013-07-31 | 2015-08-12 | 黄金良 | Cement is led and is oozed pipe and production method thereof |
| CN103707410A (en) * | 2013-12-31 | 2014-04-09 | 江苏华光双顺机械制造有限公司 | Core mold vibration pipemaking machine vibration rod locking device and installation method thereof |
| CN103707410B (en) * | 2013-12-31 | 2016-08-31 | 江苏华光双顺机械制造有限公司 | Core mould vibrating pipe-making machine vibrating head locking device and installation method thereof |
| CN106914970A (en) * | 2017-03-06 | 2017-07-04 | 成都银线电杆有限公司 | One kind improves concurrent early strength and exempts from steam protecting method |
| CN109676752A (en) * | 2018-12-04 | 2019-04-26 | 叶子鹏 | A kind of honeycombed cement tubulation and its manufacture craft |
| CN112092181A (en) * | 2020-09-10 | 2020-12-18 | 连云港市成盛混凝土构件有限责任公司 | Assembly type prefabricated square culvert forming device and manufacturing process thereof |
| CN112092181B (en) * | 2020-09-10 | 2021-05-18 | 连云港市成盛混凝土构件有限责任公司 | Assembly type prefabricated square culvert forming device and manufacturing process thereof |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |