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CN208991060U - A kind of steel pipe spray painting anti-corrosive apparatus - Google Patents

A kind of steel pipe spray painting anti-corrosive apparatus Download PDF

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Publication number
CN208991060U
CN208991060U CN201821360128.9U CN201821360128U CN208991060U CN 208991060 U CN208991060 U CN 208991060U CN 201821360128 U CN201821360128 U CN 201821360128U CN 208991060 U CN208991060 U CN 208991060U
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CN
China
Prior art keywords
steel pipe
protective housing
support
paints
corrosive apparatus
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Active
Application number
CN201821360128.9U
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Chinese (zh)
Inventor
常永攀
武永强
杜莹
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xinxing Ductile Iron Pipes Co Ltd
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Xinxing Ductile Iron Pipes Co Ltd
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Priority to CN201821360128.9U priority Critical patent/CN208991060U/en
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Publication of CN208991060U publication Critical patent/CN208991060U/en
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

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  • Spray Control Apparatus (AREA)

Abstract

The utility model discloses a kind of steel pipe spray painting anti-corrosive apparatus, including paint spraying mechanism, protective housing, the rotary support mechanism for rotating supporting steel pipe, the recycling box for recycling paint and the adsorbing mechanism for adsorbing gas in protective housing for painting to steel tube surface.The device can be made steel pipe with its axis center rotation, the entire circumferential surface of steel pipe is enable to be painted mechanism spraying completely, be realized the automatic operation that can be painted to steel pipe corrosion-proof, improved work efficiency by the setting of rotary support mechanism;The device is equipped with adsorbing mechanism, the irritative gas generated in protective housing can be effectively adsorbed to inhale, in addition, the setting of protective housing, irritative gas is further prevented directly to leak, maximum adsorption treatment can be obtained by mentioning harmful energy, effectively reduce environmental pollution, the cleannes for improving working environment, guarantee the safety of operator;Also, recycling box can collect the paint under recycling spray, improve the utilization rate of paint, reduce production cost.

Description

A kind of steel pipe spray painting anti-corrosive apparatus
Technical field
The utility model relates to anti-corrosive apparatus technical field more particularly to a kind of steel pipe spray painting anti-corrosive apparatus of painting.
Background technique
Steel pipe is a kind of widely used steel construction piece, such as billboard column, electric pole, pipeline etc..In steel pipe's production In the process, it is often necessary to spray painting processing be carried out to steel pipe, to prevent steel pipe from corroding.
Outer surface of steel tube spray painting operation in the prior art is most of to be completed by manually being smeared with brush, and paint working efficiency Low, labor intensity is high.Although there is spray gun for paint in the market, it is only applicable to single side product.Due to steel pipe (including round tube and square tube) Multi-panel, thus must man-hour manually hand-held spray gun for paint, while continuous progress, working efficiency is low, large labor intensity, very It is inconvenient.
Also, paint contained in nuisance mainly have volatile organic compounds (VOC), benzene, formaldehyde, heavy metal (lead, Mercury etc.) etc., great healthy hidden danger is caused to operator.
Utility model content
Equipment is able to use the technical problem to be solved by the utility model is to provide one kind automatically to paint to steel tube surface, Working efficiency is improved, and the irritative gas generated in painting process can be adsorbed, reduces a kind of steel pipe spray painting of air pollution Anti-corrosive apparatus.
In order to solve the above technical problems, technical solution adopted in the utility model is:
A kind of steel pipe spray painting anti-corrosive apparatus, including the paint spraying mechanism for painting to steel tube surface, which is characterized in that also wrap It includes:
One protective housing;
In being arranged in protective housing for rotating the rotary support mechanism of supporting steel pipe, the rotary support mechanism includes position It is described in being equipped with a rotary shaft by bearing is rotatable in the front support and rear support of steel pipe axial ends, the front support Rotation axis horizontal setting is coaxially connected with the fixture for accommodating steel pipe towards one end of rear support, and other end connection is useful In the driving motor for driving its rotation, the steel pipe is in rolling contact with rear support;
In being arranged in protective housing for recycling the recycling box of paint, the recycling box opening is set to the lower section of steel pipe;
The paint spraying mechanism is set in protective housing, and is located at the surface of steel pipe;And
For adsorbing the adsorbing mechanism of gas in protective housing, the adsorbing mechanism includes adsorption box and is placed in adsorption box Absorption blower and adsorption module, the air inlet of the absorption blower is connected with the adsorption tube protruded into protective housing, adsorbs blower Air outlet connect adsorption module, the gas after adsorption module adsorbs is discharged by exhaust pipe.
A further technical solution lies in: the protective housing is equipped with the perforation of one with steel pipe coaxial arrangement, the perforation It is arranged close to rear support side, the bore of the perforation is greater than steel pipe.
A further technical solution lies in: the adsorbing mechanism is located at the bottom of protective housing, and fixation can be supported by being placed in In one support case of protective housing, the bottom of the support case is equipped with the movable pulley that device can be made to move integrally.
A further technical solution lies in: the lower part of the opposite two sidewalls of the support case is fixed with support construction, described Rotary support mechanism includes the horizontal support plate being fixed on support case, offers threaded hole, the screw thread in the support plate Adjusting screw rod is equipped in hole vertically, the bottom level of the adjusting screw rod is equipped with non-slip mat.
A further technical solution lies in: it offers to open on the front or rear side wall of the protective housing and puts steel pipe into Operation door in protective housing.
A further technical solution lies in: the operation door is transparent material production.
A further technical solution lies in: in the protective housing, one is equipped in the top of steel pipe and is set along length of steel pipe direction The moving rail set, the paint spraying mechanism can be moved along moving rail.
A further technical solution lies in:
Fixture, including fixed ring, it is radial centered on its center of circle in the fixed ring to be uniformly provided at least three energy Enough flexible clamping limb, one end of the clamping limb are fixed on the inner wall of fixed ring, and the other end of all clamping limbs mutually converges shape At the aid chamber for accommodating light pipe;
Rear support, top include two support wheels that can be rotated, and two support wheels, which can synchronize, to be moved up and down simultaneously up and down Locking, the steel pipe are located in the V-arrangement clip slot of two support wheels formation.
A further technical solution lies in: the clamping limb includes guide sleeve, the compressed spring in guide sleeve And one end is located at the extrusome that can be slided in guide sleeve and along guide sleeve.
A further technical solution lies in: the adsorption tube is located at the part in protective housing equipped with multiple vacuum noz(zle)s.
The beneficial effects of adopting the technical scheme are that
The device can make steel pipe with its axis center rotation, make the whole of steel pipe by the setting of rotary support mechanism A circumferential surface can be painted mechanism spraying completely, realize the automatic operation that can be painted to steel pipe corrosion-proof, improve work efficiency;
The device is equipped with adsorbing mechanism, can effectively adsorb the irritative gas generated in protective housing and inhale, in addition, protection The setting of case, further prevents irritative gas directly to leak, and maximum adsorption treatment can be obtained by mentioning harmful energy, has The reduction environmental pollution of effect, improves the cleannes of working environment, guarantees the safety of operator;
Also, recycling box can collect the paint under recycling spray, improve the utilization rate of paint, reduce production cost.
Detailed description of the invention
Utility model will be further described in detail below with reference to the attached drawings and specific embodiments.
Fig. 1 is the schematic cross-sectional view of the utility model;
Fig. 2 is the structural schematic diagram of the utility model;
Fig. 3 is the structural schematic diagram of fixture described in the utility model;
Fig. 4 is the structural schematic diagram of clamping limb described in the utility model;
Fig. 5 is the left view structural representation of rear support described in the utility model.
Specific embodiment
Below with reference to the attached drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out clear Chu is fully described by, it is clear that described embodiment is a part of the embodiment of the utility model, rather than whole implementation Example.Based on the only embodiment in the utility model, those skilled in the art are obtained without making creative work The every other embodiment obtained, fall within the protection scope of the utility model.
Many details are explained in the following description in order to fully understand the utility model, but this is practical new Type can also be implemented using other than the one described here other way, and those skilled in the art can be without prejudice to this reality With doing similar popularization in the case where novel intension, therefore the utility model is not limited by the specific embodiments disclosed below.
The anti-corrosive apparatus as shown in Figure 1, a kind of steel pipe paints, including for the paint spraying mechanism 10 to 100 surface lacquer of steel pipe, It further include protective housing 20, the rotary support mechanism for rotating supporting steel pipe 100, for recycling the recycling box 40 painted and being used for Adsorb the adsorbing mechanism of gas in protective housing 20.
Rotary support mechanism is set in protective housing 20, front support 31 and rear branch including being located at 100 axial ends of steel pipe Support 32 is equipped with a rotary shaft 33 by bearing is rotatable in the front support 31, and the rotary shaft 33 is horizontally disposed, direction One end of rear support 32 is coaxially connected with the fixture 34 for accommodating steel pipe 100, and the other end is connected with for driving it to rotate Driving motor 35, the steel pipe 100 are in rolling contact with rear support 32.
Before carrying out spray painting processing to steel pipe 100, need that first one end of steel pipe 100 is fixed on fixture 34, the other end It is placed in rear support 32, fixture 34 plays the role of fixed steel pipe 100, and rear support 32 only serves the purpose of supporting steel pipe 100, makes Steel pipe 100 can be horizontally disposed with.At work, driving motor 35 starts rotary support mechanism, and driving rotary shaft 33 rotates, rotation Axis 33 drives fixture 34 to rotate, to make steel pipe 100 with its axis autobiography.And since steel pipe 100 and the rolling of rear support 32 connect Touching, is in rolling contact the abrasion that can reduce rear support 32 to steel pipe 100.Recycling box 40 is set in protective housing 20 and recycling box 40 is spacious Mouth is set to the lower section of steel pipe 100.
And paint spraying mechanism 10 is equally set in protective housing 20, and is located at the surface of steel pipe 100.
Adsorbing mechanism includes adsorption box 51 and the absorption blower 52 and adsorption module 53 that are placed in adsorption box 51, the suction The air inlet of attached blower 52 is connected with the adsorption tube 54 protruded into protective housing 20, and the air outlet of absorption blower 52 connects adsorption module 53, the gas after the absorption of adsorption module 53 is discharged by exhaust pipe 55.
At work, absorption blower 52 starts adsorbing mechanism, is extracted out the gas in protective housing 20 using adsorption tube 54, so After be re-directed towards adsorption module 53 discharge, enable irritative gas to effectively enter 53 quilt of adsorption module under the action of high pressure Absorption.Wherein adsorption module 53 includes spaced photo-catalytic filtering screen and activated carbon adsorption net.Wherein adsorbing mechanism is from opening Spray painting begin to having sprayed in certain time, it is in the open state always.
Paint spraying mechanism 10 in the device uses the prior art, pumps, is storing up including fuel reserve tank, the pumping paint being placed in fuel reserve tank The lacquer export that fuel tank offers, lacquer export are equipped with a spray painting pipe along the setting of 100 direction of steel pipe, and spray painting pipe is upper every farthest It is equipped with a painting nozzle every 30cm, and is additionally provided with valve between spray painting pipe and fuel reserve tank.The valve is opened in spray painting, is sprayed It is closed after complete paint, prevents paint leakage.The valve can be solenoid valve Electronic control, easy to operate.
The device can make steel pipe 100 with its axis center rotation, make steel pipe by the setting of rotary support mechanism 100 entire circumferential surface can be painted mechanism spraying completely, realize the automatic operation that can be painted to steel pipe corrosion-proof, improve work Make efficiency.Adsorbing mechanism can effectively adsorb the irritative gas generated in protective housing 20 and inhale, in addition, protective housing 20 is set It sets, irritative gas is further prevented directly to leak, maximum adsorption treatment can be obtained by mentioning harmful energy, effective to drop Low environment pollution, improves the cleannes of working environment, guarantees the safety of operator.Also, recycling box 40 can collect recycling Paint under spray improves the utilization rate of paint, reduces production cost.
Since the length of steel pipe 100 is different, so a perforation being coaxially disposed with steel pipe 100 is equipped on protective housing 20, Described perforate is arranged close to 32 side of rear support, and the steel pipe 100 of redundance can stretch out outside protective housing 20, and one end is waited to spray paint Afterwards, the other end is reversely accommodated, whole of long steel pipe or part is suitble to paint.And the bore of the perforation is greater than steel pipe 100, Steel pipe 100 is not interfered to rotate, 20 air inlet of protective housing can be made again by installing the gap reserved after steel pipe, guarantee the pressure in protective housing 20 It is strong constant.Since adsorbing mechanism is taking out always the gas in protective housing 20, so the pressure in protective housing 20 is less than the external world, it will not There is gas evolution.
Adsorbing mechanism is located at the bottom of protective housing 20, and being placed in can support the one of fixed protection case 20 to support in case 60, Effectively save the occupancy in space.And since paint spraying is mostly outdoor, air circulation is preferable, should so often to move Device.The position of the mobile device of personnel for ease of operation, so being equipped in the bottom of support case 60 can make device whole Mobile movable pulley 61.
Due to the setting of movable pulley 61, the stability and safety of the device are reduced, to avoid spray painting anti-corrosive apparatus sheet Body, which shakes, leads to dangerous situation, so it is fixed with support construction in the lower part of the opposite two sidewalls of support case 60, institute Stating rotary support mechanism includes the horizontal support plate 71 being fixed on support case 60, offers threaded hole in the support plate 71, Adjusting screw rod 72 is equipped in the threaded hole vertically, the bottom level of the adjusting screw rod 72 is equipped with non-slip mat 73.In order to grasp Facilitate, rotating handle can be set at the top of adjusting screw rod 72.After moving the device into suitable position using movable pulley 61, It is rotated down adjusting screw rod 72, keeps movable pulley 61 hanging, by non-slip mat 73 and ground face contact, improves ground grip ability, improving should The stability of device.
As shown in Fig. 2, due to protective housing 20 be a cavity body structure, need as far as possible avoid irritative gas from escaping, be Steel pipe 100 can be mounted on rotatable support structure, offer on the front or rear side wall of protective housing 20 can open by Steel pipe 100 puts the operation door 21 in protective housing 20 into.Also, for the ease of observation spray painting situation, so operation door 21 is transparent Material production, the transparent plastic of organic glass and inside including outer layer.The setting of transparent plastic can effectively prevent oil Paint pollution outer layer only needs to change clarity plastic layer after operation door 21 is unintelligible.
Since the length of steel pipe 100 is different, in order to reduce the waste of paint, in protective housing 20, set in the top of steel pipe 100 There is a moving rail 11 along the setting of 100 length direction of steel pipe, the paint spraying mechanism 10 can be moved along moving rail 11.According to steel pipe 100 length moves paint spraying mechanism 10, so that it is painted in effective range.Also, rear support 32 equally can be according to steel The length of pipe 100 is adjusted axially and locks along it.
Paint spraying mechanism can be used along the specific structure that moving rail 11 moves engagement, the screw nut driven of rack-and-pinion Deng.For the driving form of feed screw nut, moving rail 11 is screw structure, and the both ends of the lead screw by bearing it is rotatable with Protective housing 20 connects, and one end of lead screw is connected with the second driving motor 13 or wind of its rotation of driving, and in paint spraying machine Structure 10 be equipped with the matched nut 12 of lead screw, by lead screw just or reverse turn, enable paint spraying mechanism 10 along moving rail 11 move back and forth.
As shown in figure 3, fixture 34 includes fixed ring 341, it is radial equal centered on its center of circle in the fixed ring 341 Even to be equipped at least three clamping limbs 342 that stretched, one end of the clamping limb 342 is fixed on the inner wall of fixed ring 341, The other end of all clamping limbs 342 mutually converges the aid chamber to be formed for accommodating light pipe.By adjusting the length of clamping limb 342, make The diameter that chamber must be accommodated can be adjusted according to the diameter of steel pipe 100.
As shown in figure 4, clamping limb 342 includes guide sleeve 3421, the compressed spring 3422 in guide sleeve 3421 And one end is located at the extrusome 3423 that can be slided in guide sleeve and along guide sleeve 3421.Pass through the pressure of compressed spring 3422 Contracting, so that aid chamber becomes larger, and the reaction force that compressed spring has can make guide sleeve 3421 or extrusome 3423 Clamp steel pipe 100.
As shown in figure 5, including two support wheels 321 that can be rotated at the top of rear support 32, the steel pipe 100 is located at two In the V-arrangement clip slot that support wheel 321 is formed, the form being in rolling contact with steel pipe 100 is formed.Due to the difference of 100 diameter of steel pipe, it is Steel pipe after guaranteeing clamping is horizontally disposed, and the height of corresponding rear support 32 will also be adjusted, so two support wheels 321 can It synchronizes and moves up and down and lock up and down.
Specifically, rear support 32 includes the adjusting bracket in " n " shape, the adjusting bracket have two support rods being vertically arranged with And the adjusting rod of two support rods is connected, it is equipped with vertically on the support rod and adjusts sliding slot, the both ends of the adjusting rod are equipped with energy Enough sliding blocks slided in corresponding sliding slot, and slider locks are made to adjusting rod and the relatively-stationary lock of support rod in sliding slot It is female.The support wheel 321 is rotatably installed on adjusting rod.
It is located at the part in protective housing 20 equipped with multiple vacuum noz(zle)s 541 in adsorption tube 54, the quantity of vacuum noz(zle) 541 can basis The volume settings of protective housing 20 enable the gas in protective housing 20 to be fast and effectively sucked out.
The above is only the preferred embodiments of the utility model, anyone content according to the present utility model is to the utility model A little simple modification, deformation and the equivalent replacement made each falls within the protection scope of the utility model.

Claims (10)

  1. The anti-corrosive apparatus 1. a kind of steel pipe paints, including for the paint spraying mechanism (10) to steel pipe (100) surface lacquer, feature exists In, further includes:
    One protective housing (20);
    In the rotary support mechanism for being used to rotate supporting steel pipe (100) being arranged in protective housing (20), the rotary support mechanism It, can by bearing on the front support (31) including the front support (31) and rear support (32) positioned at steel pipe (100) axial ends Rotation is equipped with a rotary shaft (33), and the rotary shaft (33) is horizontally disposed, coaxially connected towards one end of rear support (32) There is the fixture (34) for accommodating steel pipe (100), the other end is connected with the driving motor (35) for driving it to rotate, the steel Pipe (100) is in rolling contact with rear support (32);
    In being arranged in protective housing (20) for recycling the recycling box (40) of paint, the recycling box (40) is open to be set to steel pipe (100) lower section;
    The paint spraying mechanism (10) is set in protective housing (20), and is located at the surface of steel pipe (100);And
    For adsorbing the adsorbing mechanism of protective housing (20) interior gas, the adsorbing mechanism includes adsorption box (51) and is placed in absorption Absorption blower (52) and adsorption module (53) in box (51), the air inlet of absorption blower (52), which is connected with, protrudes into protective housing (20) air outlet of the adsorption tube (54) in, absorption blower (52) connects adsorption module (53), after adsorption module (53) absorption Gas by exhaust pipe (55) be discharged.
  2. The anti-corrosive apparatus 2. a kind of steel pipe according to claim 1 paints, it is characterised in that: the protective housing (20) is equipped with One perforation being coaxially disposed with steel pipe (100), described perforate are arranged close to rear support (32) side, and the bore of the perforation is greater than Steel pipe (100).
  3. The anti-corrosive apparatus 3. a kind of steel pipe according to claim 1 paints, it is characterised in that: the adsorbing mechanism is located at protection The bottom of case (20), being placed in can support the one of fixed protection case (20) to support in case (60), the bottom of support case (60) Portion is equipped with the movable pulley (61) that device can be made to move integrally.
  4. The anti-corrosive apparatus 4. a kind of steel pipe according to claim 3 paints, it is characterised in that: the support case (60) is opposite The lower part of two sidewalls is fixed with support construction, and the rotary support mechanism includes the support plate that level is fixed in support case (60) (71), threaded hole is offered on the support plate (71), is equipped with adjusting screw rod (72), the adjusting in the threaded hole vertically The bottom level of screw rod (72) is equipped with non-slip mat (73).
  5. The anti-corrosive apparatus 5. a kind of steel pipe according to claim 1 paints, it is characterised in that: the protective housing (20) preceding or The operation door (21) put steel pipe (100) into protective housing (20) can be opened by offering on rear wall.
  6. The anti-corrosive apparatus 6. a kind of steel pipe according to claim 5 paints, it is characterised in that: the operation door (21) is transparent Material production.
  7. The anti-corrosive apparatus 7. a kind of steel pipe according to claim 6 paints, it is characterised in that: in the protective housing (20), The top of steel pipe (100) is equipped with a moving rail (11) along the setting of steel pipe (100) length direction, and the paint spraying mechanism (10) can It is mobile along moving rail (11).
  8. The anti-corrosive apparatus 8. a kind of steel pipe according to claim 1 paints, it is characterised in that:
    Fixture (34), including fixed ring (341), it is radial centered on its center of circle in the fixed ring (341) to be uniformly provided with At least three clamping limbs (342) that can be stretched, one end of the clamping limb (342) are fixed on the inner wall of fixed ring (341), The other end of all clamping limbs (342) mutually converges the aid chamber to be formed for accommodating light pipe;
    Rear support (32), top include two support wheels (321) that can be rotated, and two support wheels (321) can synchronize up and down Movement simultaneously locks up and down, and the steel pipe (100) is located in the V-arrangement clip slot of two support wheels (321) formation.
  9. The anti-corrosive apparatus 9. a kind of steel pipe according to claim 8 paints, it is characterised in that: the clamping limb (342) includes Guide sleeve (3421), the compressed spring (3422) being set in guide sleeve (3421) and one end are located in guide sleeve and can Along the extrusome (3423) of guide sleeve (3421) sliding.
  10. The anti-corrosive apparatus 10. a kind of steel pipe according to claim 1 paints, it is characterised in that: the adsorption tube (54) is located at Part in protective housing (20) is equipped with multiple vacuum noz(zle)s (541).
CN201821360128.9U 2018-08-22 2018-08-22 A kind of steel pipe spray painting anti-corrosive apparatus Active CN208991060U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201821360128.9U CN208991060U (en) 2018-08-22 2018-08-22 A kind of steel pipe spray painting anti-corrosive apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201821360128.9U CN208991060U (en) 2018-08-22 2018-08-22 A kind of steel pipe spray painting anti-corrosive apparatus

Publications (1)

Publication Number Publication Date
CN208991060U true CN208991060U (en) 2019-06-18

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108970858A (en) * 2018-08-22 2018-12-11 新兴铸管股份有限公司 A kind of steel pipe spray painting anti-corrosive apparatus
CN111438025A (en) * 2020-04-15 2020-07-24 秦皇岛市牧热防腐保温工程有限公司 Coating device for external anticorrosive material of heat-preservation direct-buried pipe
CN113731684A (en) * 2021-09-26 2021-12-03 湖南天卓管业有限公司 Spraying equipment is used in anticorrosive steel pipe production of environment-friendly PE

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108970858A (en) * 2018-08-22 2018-12-11 新兴铸管股份有限公司 A kind of steel pipe spray painting anti-corrosive apparatus
CN108970858B (en) * 2018-08-22 2023-10-03 新兴铸管股份有限公司 Steel pipe paint spraying anti-corrosion device
CN111438025A (en) * 2020-04-15 2020-07-24 秦皇岛市牧热防腐保温工程有限公司 Coating device for external anticorrosive material of heat-preservation direct-buried pipe
CN113731684A (en) * 2021-09-26 2021-12-03 湖南天卓管业有限公司 Spraying equipment is used in anticorrosive steel pipe production of environment-friendly PE

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