CN115029882A - Steel pipe anticorrosive coating construction tool - Google Patents
Steel pipe anticorrosive coating construction tool Download PDFInfo
- Publication number
- CN115029882A CN115029882A CN202210533560.8A CN202210533560A CN115029882A CN 115029882 A CN115029882 A CN 115029882A CN 202210533560 A CN202210533560 A CN 202210533560A CN 115029882 A CN115029882 A CN 115029882A
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- CN
- China
- Prior art keywords
- steel pipe
- roller
- trolley
- carriage
- anticorrosive coating
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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.)
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B3/00—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating
- D06B3/10—Passing of textile materials through liquids, gases or vapours to effect treatment, e.g. washing, dyeing, bleaching, sizing, impregnating of fabrics
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H81/00—Methods, apparatus, or devices for covering or wrapping cores by winding webs, tapes, or filamentary material, not otherwise provided for
- B65H81/06—Covering or wrapping elongated cores
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
- D06B15/00—Removing liquids, gases or vapours from textile materials in association with treatment of the materials by liquids, gases or vapours
- D06B15/02—Removing liquids, gases or vapours from textile materials in association with treatment of the materials by liquids, gases or vapours by squeezing rollers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Coating Apparatus (AREA)
Abstract
The invention belongs to the technical field of anticorrosion construction of buried steel pipes, and particularly relates to a steel pipe anticorrosion layer construction tool; the steel pipe sliding device comprises a trolley and two steel pipe brackets, wherein a pair of idler wheels with opposite circumferential surfaces are arranged on each steel pipe bracket, the head end and the tail end of each steel pipe are respectively arranged between the idler wheels of the front steel pipe bracket and the rear steel pipe bracket, one end of each steel pipe is connected with a torque input element, and the steel pipe bracket at the other end of each steel pipe is provided with a limit for limiting the sliding of the steel pipe; the trolley is provided with an oil tank and a cloth roller, the cloth roller is erected above the liquid level of the oil tank, the trolley moves from head to tail along the steel pipe, the moving speed of the trolley is matched with the rotating speed of the steel pipe, and cloth strips on the cloth roller are unfolded, then forcibly immerse into the oil tank after passing through a first steering component, and then wind on the steel pipe after passing through a second steering component above oil; the tool is simple to operate, the original construction process is simplified, and the construction progress is accelerated; the paint on the surface of the steel pipe is uniform in thickness, the qualification rate after construction is finished is improved, and the construction quality is ensured.
Description
Technical Field
The invention belongs to the technical field of anticorrosion construction of buried steel pipes, and particularly relates to a steel pipe anticorrosion layer construction tool.
Background
At present, in the design of building engineering, most of electric wires and cables of outdoor electrical engineering are buried underground, the electric wires and cables are buried in pipelines such as steel pipes in advance in the design, and the electric wires and cables are penetrated in the later period. The pipeline which is permanently buried underground generally needs waterproof and anticorrosion treatment of 'three oil and two cloth', the process is usually carried out by workers using an oil brush when the process is carried out on site, but the circular pipeline is labor-consuming and time-consuming when being manually brushed, and construction progress control is not facilitated; in some areas, due to the fact that construction of each specialty is crossed, construction of the procedure is not completed, the grooves cannot be buried, the road is obstructed, and other specialties cannot be constructed. Therefore, the construction process should be completed quickly. It is required to perform technological innovation under the condition that factors such as original constructors and the like are not changed.
In the prior art, the utility model with the publication number CN209023190U discloses an automatic non-woven fabric wrapping device for a steel tube, which comprises a steel tube, a fabric roller positioned at one side of the steel tube, and a supporting wheel for supporting the steel tube, wherein a motor for controlling the rotation of the supporting wheel is arranged at the top of a first supporting frame; between the supporting wheels of the front automatic wrapping device and the rear automatic wrapping device of the steel pipe frame, the supporting wheels are driven by a motor to rotate, the steel pipes rotate along with the supporting wheels, and the non-woven fabric is wrapped on the steel pipes by manually moving the cloth roller along the steel pipes; if the device is used for finishing the construction of the steel pipe anticorrosive coating, manual oil brushing is needed.
Notice No. is CN 212759386U's utility model discloses a steel pipe painting device, including two mutual articulated mopping portions, the guiding mechanism of rigid coupling in mopping portion, a push-and-pull mechanism for two mopping portions open or fold, mopping portion includes half annular's mopping piece, many brush stripes that distribute at mopping piece inner ring surface, guiding mechanism includes the lantern ring of rigid coupling at mopping piece outer ring surface, the array inlays the supplementary roll portion of establishing at lantern ring internal surface, the cover is established at the intra-annular slide bar of cover, establish the universal wheel in the slide bar bottom, lantern ring inner wall is less than the length of brush stripe to the distance on slide bar surface. The painting device is lack of a paint filling mechanism and cannot continuously and uniformly coat paint on the surface of the steel pipe.
To sum up, the device that can give steel pipe mopping and infantees simultaneously lacks among the prior art, and steel pipe mopping and infantees device among the prior art all is that the motor drives the steel pipe and rotates, can't use at the inconvenient job site of power consumption, and the equipment of motor drive form is from great, and equipment transition is troublesome.
Disclosure of Invention
It is an object of the present invention to address at least the above problems and to provide at least the advantages described hereinafter.
In order to achieve the purpose, the invention provides a steel pipe anticorrosive coating construction tool, which comprises a trolley and two steel pipe brackets, wherein the steel pipe brackets are arranged on a straight line, each steel pipe bracket is provided with a pair of idler wheels with opposite circumferential surfaces, the head end and the tail end of each steel pipe are respectively arranged between the idler wheels of the front steel pipe bracket and the rear steel pipe bracket, one end of each steel pipe is connected with a torque input element, and the steel pipe bracket at the other end of each steel pipe is provided with a limit for limiting the sliding of the steel pipe; the trolley is provided with an oil tank and a cloth roller, the cloth roller is arranged above the liquid level of the oil tank, the trolley moves from head to tail along the steel pipe, the moving speed of the trolley is matched with the rotating speed of the steel pipe, and cloth strips on the cloth roller are unfolded, pass through a first steering component, are forcibly immersed in the oil tank, then pass through a second steering component above oil and are wound on the steel pipe.
Furthermore, the cloth strips on the cloth rollers are unfolded, forced to be immersed into the oil tank through a press roller, and then penetrate out from the space between the two clamping rollers above the oil tank to be wound on the steel pipe.
Furthermore, the trolley comprises a carriage and four wheels, wherein the four wheels are distributed on the bottom surface of the carriage to bear the carriage, and the carriage is connected with a handle; the top of the carriage is open, the carriage is sealed internally, the carriage is internally provided with an oil pool, the cloth roller, the compression roller and the clamping roller are parallel, and the cloth roller, the compression roller and the clamping roller are transversely arranged between two carriage walls of the carriage.
Furthermore, the compartment wall provided with the clamping roller is higher than the box wall facing the steel pipe, and the clamping roller is arranged in a higher area.
Furthermore, a damping mechanism which hinders the cloth strips from unfolding is connected with the rotating shaft of the cloth roller.
Furthermore, the torque input element is a motor, the motor is arranged on a sliding table on the steel pipe bracket and slides along the axis of the steel pipe, a power head is arranged on a rotating shaft of the motor, and a conical friction surface surrounding the axis of the steel pipe is arranged on the power head.
Further, the slip table is the lead screw slip table.
Furthermore, the torque input element is a rocking handle, a grip of the rocking handle is perpendicular to the rocking arm, two rods opposite to the grip are fixed on the rocking arm, and the distance between the two rods is larger than the wall thickness of the steel pipe.
Furthermore, the steel pipe bracket comprises a rectangular seat plate, supporting legs are fixed at four corners of the bottom of the seat plate, the two rollers are arranged on the seat plate, a limiting shaft is vertically arranged in front of the middle point between the two rollers on the seat plate of one steel pipe bracket, and the limiting shaft blocks the end opening of the steel pipe.
Compared with the prior art, the invention has the advantages that:
according to the steel pipe anticorrosive coating construction tool provided by the invention, the cloth roller is arranged on the trolley, and the cloth strips on the cloth roller are unfolded to be firstly forcedly immersed into the oil pool to fully soak the oil liquid and then penetrate out of the space between the two clamping rollers above the oil pool, and redundant oil liquid is scraped by the clamping rollers; the steel pipe is erected on the steel pipe bracket with the roller, and the steel pipe has two rotation modes, namely handle hand-cranking rotation and motor drive, and is not limited by the use environment; after the rotating speed of the steel pipe is matched with the moving speed of the trolley, the cloth strips on the cloth roller are wound on the steel pipe, and meanwhile, painting and coating of paint are completed. The tool is simple to operate, the original construction process is simplified, and the construction progress is accelerated; the paint on the surface of the steel pipe is uniform in thickness, the qualification rate after construction is finished is improved, and the construction quality is ensured.
Drawings
Fig. 1 is a schematic structural view of embodiment 1.
Fig. 2 is a schematic structural view of the cart.
Fig. 3 is a schematic view of brushing oil on the cloth strip on the cloth roller.
Fig. 4 is a schematic structural view of the rocking handle.
Fig. 5 is a schematic diagram of the motor and steel tube transmission.
In the figure: 1-steel tube bracket; 1.1-roller; 1.2-legs; 1.3-seat board; 1.4-a limit shaft; 2-a steel pipe; 3-trolley; 3.1-oil sump; 3.2-cloth roller; 3.3-press roll; 3.4-nip rolls; 3.5-compartment; 3.6-vehicle wheel; 3.7-handle; 4-a motor; 4.1-power head; 5-a sliding table; 6-rocking handle; 6.1-grip; 6.2-rocker arm; 6.3-rod.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
Please refer to fig. 1 to 5. It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
Example 1
As shown in fig. 1, 2, 3, 5; the embodiment provides a technical scheme: the utility model provides a steel pipe anticorrosive coating construction tool, includes a dolly 3 and two steel pipe bracket 1, and steel pipe bracket 1 arranges on a straight line, installs a pair of gyro wheel 1.1 that the periphery is relative on every steel pipe bracket 1, and the head and the tail end of steel pipe 2 are arranged in respectively between the gyro wheel 1.1 of front and back steel pipe bracket 1, but the steel pipe on the steel pipe bracket 1 free rotation. One end of the steel pipe 2 is connected with a torque input element, a limit for limiting the sliding of the steel pipe is arranged on the steel pipe bracket 1 at the other end of the steel pipe 2, the torque input element at one end of the steel pipe 2 drives the steel pipe to rotate, and the limit at the other end prevents the steel pipe from shifting. An oil pool 3.1 and a cloth roller 3.2 are arranged on the trolley 3, the cloth roller 3.2 is erected above the liquid level of the oil pool 3.1, the trolley 3 moves from head to tail along the steel pipe, the moving speed of the trolley 3 is matched with the rotating speed of the steel pipe 2, and cloth strips on the cloth roller 3.2 are unfolded, then are forcibly immersed into the oil pool after passing through a first steering component, and then are wound on the steel pipe 2 after passing through a second steering component above oil.
Specifically, the cloth strips on the cloth rollers 3.2 are unfolded, forcibly immersed into the oil tank through a press roller 3.3, then penetrate out of the space between the two clamping rollers 3.4 above the oil tank and are wound on the steel pipe 2, the cloth strips fully absorb oil after being immersed into the oil tank, redundant adsorbed oil is extruded out through the two clamping rollers 3.4, and the extruded oil falls into the oil tank; the oil dripping in the process that the cloth strips are wound on the steel pipe 2 is reduced, and the pollution to soil and the waste of the oil are reduced.
The trolley 3 comprises a carriage 3.5 and four wheels 3.6, the four wheels 3.6 are distributed on the bottom surface of the carriage 3.5 to bear the carriage, a handle 3.7 is connected to the carriage, and the trolley is pushed manually through the handle 3.7. The top of the carriage 3.5 is open, the carriage is sealed, the oil pool 3.1 is arranged in the carriage, the cloth roller 3.2, the press roller 3.3 and the clamping roller 3.4 are parallel, and the cloth roller 3.2, the press roller 3.3 and the clamping roller 3.4 are transversely arranged between two carriage walls of the carriage. The compartment wall provided with the clamping roller 3.3 is higher than the box wall facing the steel pipe, and the clamping roller 3.3 is arranged in a higher area. In order to prevent the cloth roller 3.2 from disorderly scattering, a damping mechanism which can block the cloth strips from unfolding is connected with the rotating shaft of the cloth roller 3.2.
The steel tube bracket 1 comprises a rectangular base plate 1.3, supporting legs 1.2 are fixed at four corners of the bottom of the base plate 1.3, two rollers 1.1 are mounted on the base plate 1.3, a limiting shaft 1.4 is erected in front of a middle point between the two rollers on the base plate of one steel tube bracket 1, and the limiting shaft 1.4 blocks a port of a steel tube.
In this example, the torque input element is a motor 4, the motor 4 is mounted on a sliding table 5 on the steel pipe bracket 1 and slides along the axis of the steel pipe 2, the sliding table 5 is a screw rod sliding table, the screw rod drives the sliding table to move linearly, and the screw rod can be manual or electric. A power head 4.1 is installed on a rotating shaft of the motor 4, a conical friction surface surrounding the axis of the steel pipe is arranged on the power head 4.1, the sliding table 5 moves towards the steel pipe, the conical friction surface of the power head 4.1 is connected with the pipe orifice of the steel pipe, a limiting shaft 1.4 at the other end of the steel pipe blocks the port of the steel pipe, and the motor drives the steel pipe to rotate through the power head. The power head 4.1 is a conical cylinder formed by curling a steel plate, and a rubber layer is wrapped on the outer surface of the power head to increase the friction force between the power head and a steel pipe.
Example 2
As shown in fig. 4; the difference between this example and embodiment 1 is that the torque input element is a rocking handle 6, a grip 6.1 of the rocking handle 6 is perpendicular to a rocker arm 6.2, two rods 6.3 opposite to the grip are fixed on the rocker arm 6.2, and the distance between the two rods 6.3 is larger than the wall thickness of the steel pipe 2. The rocking handle 6 can be used for replacing a motor in a place inconvenient for electricity utilization, the using method is that the pipe wall of the steel pipe is clamped between the crack of the two rods 6.3, then the handle 6.1 is held by a hand to rotate the steel pipe, and the rocking handle 6 is convenient to use and is not limited by the wall thickness of the steel pipe.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (9)
1. The utility model provides a steel pipe anticorrosive coating construction tool which characterized in that: the steel pipe support comprises a trolley (3) and two steel pipe supports (1), wherein the steel pipe supports (1) are arranged on a straight line, a pair of idler wheels (1.1) with opposite circumferential surfaces are installed on each steel pipe support (1), the head end and the tail end of each steel pipe (2) are respectively arranged between the idler wheels (1.1) of the front steel pipe support and the rear steel pipe support (1), one end of each steel pipe (2) is connected with a torque input element, and the steel pipe support (1) at the other end of each steel pipe (2) is provided with a limit for limiting the slippage of the steel pipe; an oil pool (3.1) and a cloth roller (3.2) are arranged on the trolley (3), the cloth roller (3.2) is erected above the liquid level of the oil pool (3.1), the trolley (3) moves from head to tail along the steel pipe, the moving speed of the trolley (3) is matched with the rotating speed of the steel pipe (2), and cloth strips on the cloth roller (3.2) are unfolded and then are forcedly immersed into the oil pool after passing through a first steering component and then are wound on the steel pipe (2) after passing through a second steering component above the oil liquid.
2. The steel pipe anticorrosive coating construction tool according to claim 1, characterized in that: the cloth strips on the cloth roller (3.2) are expanded, then are forcedly immersed into the oil pool through a press roller (3.3), and then penetrate out from between two clamping rollers (3.4) above the oil pool and are wound on the steel pipe (2).
3. The steel pipe anticorrosive coating construction tool according to claim 2, characterized in that: the trolley (3) comprises a carriage (3.5) and four wheels (3.6), the four wheels (3.6) are distributed on the bottom surface of the carriage (3.5) to bear the carriage, and a handle (3.7) is connected to the carriage; the top of the carriage (3.5) is open, the carriage body is sealed, the oil pool (3.1) is arranged in the carriage body, the cloth roller (3.2), the press roller (3.3) and the clamping roller (3.4) are parallel, and the cloth roller (3.2), the press roller (3.3) and the clamping roller (3.4) are transversely arranged between two carriage walls of the carriage.
4. The steel pipe anticorrosive coating construction tool according to claim 3, characterized in that: the compartment wall provided with the clamping roller (3.3) is higher than the box wall facing the steel pipe, and the clamping roller (3.3) is arranged in a higher area.
5. The tool for constructing an anticorrosive coating of a steel pipe as claimed in claim 4, wherein: the rotating shaft of the cloth roller (3.2) is connected with a damping mechanism which can prevent the cloth strips from unfolding.
6. The tool for constructing an anticorrosive coating on a steel pipe according to any one of claims 1 to 5, wherein: the torque input element is a motor (4), the motor (4) is arranged on a sliding table (5) on the steel pipe bracket (1) and slides along the axis of the steel pipe (2), a power head (4.1) is arranged on a rotating shaft of the motor (4), and a conical friction surface surrounding the axis of the steel pipe is arranged on the power head (4.1).
7. The tool for constructing an anticorrosive coating of a steel pipe as claimed in claim 6, wherein: the sliding table (5) is a screw rod sliding table.
8. The steel pipe anticorrosive coating working tool according to any one of claims 1 to 5, characterized in that: the torque input element is a rocking handle (6), a grip (6.1) of the rocking handle (6) is perpendicular to a rocker arm (6.2), two rods (6.3) opposite to the grip are fixed on the rocker arm (6.2), and the distance between the two rods (6.3) is larger than the wall thickness of the steel pipe (2).
9. The steel pipe anticorrosive coating construction tool according to claim 8, characterized in that: the steel pipe bracket (1) comprises a rectangular base plate (1.3), supporting legs (1.2) are fixed at four corners of the bottom of the base plate (1.3), two rollers (1.1) are installed on the base plate (1.3), a limiting shaft (1.4) is erected in front of a middle point between the two rollers on the base plate of one steel pipe bracket (1), and the limiting shaft (1.4) blocks a port of a steel pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210533560.8A CN115029882A (en) | 2022-05-17 | 2022-05-17 | Steel pipe anticorrosive coating construction tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210533560.8A CN115029882A (en) | 2022-05-17 | 2022-05-17 | Steel pipe anticorrosive coating construction tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115029882A true CN115029882A (en) | 2022-09-09 |
Family
ID=83122000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210533560.8A Pending CN115029882A (en) | 2022-05-17 | 2022-05-17 | Steel pipe anticorrosive coating construction tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115029882A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4946528A (en) * | 1987-11-18 | 1990-08-07 | Kawasaki Steel Corporation | Method and equipment for producing protective-coated steel pipe |
| JPH10272729A (en) * | 1997-03-31 | 1998-10-13 | Nippon Steel Corp | Steel pipe with heavy-duty anticorrosive coating, steel pipe pile, and its manufacture |
| JPH10286909A (en) * | 1997-04-17 | 1998-10-27 | Nippon Steel Corp | Steel pipe and steel-pipe pile with heavy-duty anti-corrosion coating, and its manufacture |
| CN2440649Y (en) * | 2000-08-21 | 2001-08-01 | 陈美兰 | Glass fiber reinforced plastic winder |
| CN203002533U (en) * | 2013-01-12 | 2013-06-19 | 天津二十冶建设有限公司 | Steel pipe internal rotation vehicle |
| CN210500166U (en) * | 2019-09-04 | 2020-05-12 | 中国十九冶集团有限公司 | Manual rotary device of pipeline |
| CN113578586A (en) * | 2021-07-14 | 2021-11-02 | 中国建筑土木建设有限公司 | Simple construction pedestal for steel pipe painting and using method thereof |
-
2022
- 2022-05-17 CN CN202210533560.8A patent/CN115029882A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4946528A (en) * | 1987-11-18 | 1990-08-07 | Kawasaki Steel Corporation | Method and equipment for producing protective-coated steel pipe |
| JPH10272729A (en) * | 1997-03-31 | 1998-10-13 | Nippon Steel Corp | Steel pipe with heavy-duty anticorrosive coating, steel pipe pile, and its manufacture |
| JPH10286909A (en) * | 1997-04-17 | 1998-10-27 | Nippon Steel Corp | Steel pipe and steel-pipe pile with heavy-duty anti-corrosion coating, and its manufacture |
| CN2440649Y (en) * | 2000-08-21 | 2001-08-01 | 陈美兰 | Glass fiber reinforced plastic winder |
| CN203002533U (en) * | 2013-01-12 | 2013-06-19 | 天津二十冶建设有限公司 | Steel pipe internal rotation vehicle |
| CN210500166U (en) * | 2019-09-04 | 2020-05-12 | 中国十九冶集团有限公司 | Manual rotary device of pipeline |
| CN113578586A (en) * | 2021-07-14 | 2021-11-02 | 中国建筑土木建设有限公司 | Simple construction pedestal for steel pipe painting and using method thereof |
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