CN111330818A - Coating method of natural gas conveying pipeline - Google Patents
Coating method of natural gas conveying pipeline Download PDFInfo
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- CN111330818A CN111330818A CN202010087671.1A CN202010087671A CN111330818A CN 111330818 A CN111330818 A CN 111330818A CN 202010087671 A CN202010087671 A CN 202010087671A CN 111330818 A CN111330818 A CN 111330818A
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- pipeline
- coating
- natural gas
- wall
- pipe
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/002—Pretreatement
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
- B05D1/12—Applying particulate materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/007—After-treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/02—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by baking
- B05D3/0218—Pretreatment, e.g. heating the substrate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
- B05D7/146—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies to metallic pipes or tubes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/22—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes
- B05D7/222—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to internal surfaces, e.g. of tubes of pipes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
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- Life Sciences & Earth Sciences (AREA)
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- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention discloses a coating method of a natural gas conveying pipeline, which comprises the following steps: s1, checking the pipeline; s2, preprocessing the pipeline; s3, dedusting the pipeline; s4, coating the surface of the outer wall of the pipeline; s5, winding and protecting the end of the pipeline with the coated outer wall by using an adhesive tape; s6, coating the inner wall of the pipeline; s7, carrying out accelerated curing on the coating; s8 process checks the finished coated pipes and stacks the qualified pipes for transportation and installation. The natural gas conveying pipeline coating method provided by the invention has the advantages that the tiling performance of the surface of the coating is better, the uniformity of the structure of the coating is higher, the residual stress of the coating is lower, the hardness of the coating is higher, the friction coefficient is lower and the corrosion resistance is better; meanwhile, the air supply efficiency is improved; the energy utilization rate is increased.
Description
Technical Field
The invention relates to the technical field of coating processes of high polymer materials, in particular to a coating method of a natural gas conveying pipeline.
Background
In addition to the requirement for corrosion resistance of the inner wall of a pipeline for transporting natural gas, the inner wall of the pipeline needs to maintain high smoothness in order to ensure the transportation efficiency of natural gas. In the prior art, most manufacturers adopt a process of coating the inner surface of a pipeline firstly and then coating the outer surface of the pipeline, although the process of coating the inner wall of the pipeline firstly and then coating the outer surface of the pipeline does not need to consider the protection of the pattern layer of the outer surface of the pipeline when the inner wall of the pipeline is coated, and an enclosure does not need to be additionally arranged at the end part of the pipeline after the inner coating is finished, so that the inner wall coating has better curing performance; however, when the outer wall of the pipeline is coated subsequently, the inner wall coating is damaged, and the smoothness of the inner wall coating is reduced, so that the conveying efficiency of natural gas is reduced.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide a coating method of a natural gas conveying pipeline.
The coating method of the natural gas conveying pipeline provided by the invention comprises the following steps:
s1, checking the pipeline;
s2, preprocessing the pipeline;
s3, dedusting the pipeline;
s4, coating the surface of the outer wall of the pipeline;
s5, winding and protecting the end of the pipeline with the coated outer wall by using an adhesive tape;
s6, coating the inner wall of the pipeline;
s7, carrying out accelerated curing on the coating;
s8 process checks the finished coated pipes and stacks the qualified pipes for transportation and installation.
The step of S1 inspecting the pipeline includes:
s11 placing the pipe on a platform of a horizontal surface;
s12, carrying out defect inspection on the pipeline;
s13 performs a contamination check on the pipeline.
The S12 performs defect inspection on the pipe, thereby including the following steps:
inspecting the height of the welding seam on the inner surface and the outer surface of the pipeline;
checking the number of the falling pits on the surface of the pipeline;
inspecting the number of the corrosion pits on the surface of the pipeline;
inspecting the damage degree of the pipeline surface groove;
checking the ovality of the pipeline port;
the degree of bending of the pipe body is checked.
The S13 performing pollutant inspection on the pipeline, including:
s131, checking whether the inner wall surface and the outer wall surface of the pipeline contain grease or oil stain marks or not, and removing the grease or oil stain marks by using a high-volatility grease stain cleaning agent;
s132, checking whether the salt content of the inner wall surface and the outer wall surface of the pipeline is higher than or equal to 20 mg \ square meter; when the concentration is higher than or equal to 20 mg/square meter, a high-pressure water gun is adopted for salt removal treatment; if the concentration is lower than 20 mg/square meter, the salt removing treatment is not carried out.
The S2 is used for preprocessing the pipeline, including:
s21, drying the pipeline by adopting a flame direct heating method;
s22 detects the temperature of the dried pipe and maintains it at 60 ℃.
S231, placing the pipeline on a pipeline rack and enabling the inner cavity of the pipeline to be in a negative pressure state;
s232, performing shot blasting treatment on the inner wall and the outer wall of the pipeline by using a mixture of steel shots and steel grit as an abrasive material, so that the surface roughness of the pipeline reaches Rz30 micrometers to Rz50 micrometers;
s233 separates the abrasive at the end of the pipe by using an air flow and conveys the separated abrasive to a grinding hopper by a conveyor belt.
The S2 is used for preprocessing the pipeline, and further includes:
filtering the separated grinding materials, so that dust and waste steel grit are separated from the grinding materials which are continuously used, and conveying the grinding materials which are continuously used into a grinding hopper through a conveying belt;
and conveying the dust and the waste steel sand into a waste hopper through a conveying belt and further carrying out fertilizer treatment meeting the environmental protection standard.
The step S2 is to pre-process the pipeline, and further includes:
s241, vertically placing the pipeline, and pouring out steel shots and steel grits in the pipeline;
s242, spraying air flow into the pipeline by using a spray gun at the top of the pipeline, and sucking by using a dust collector at the bottom of the pipeline;
in the step of coating the inner wall of the pipe, the thermal spraying process is adopted to coat the alumina powder doped with the nano-scale particles as a coating on the surface of the inner wall of the pipe. The alumina powder is AT13 powder; the nanoscale particles are Al2o3-13 wt.% Tio2 powder in a nano-agglomerated state.
The natural gas conveying pipeline coating method provided by the invention has the advantages that the tiling performance of the surface of the coating is better, the uniformity of the structure of the coating is higher, the residual stress of the coating is lower, the hardness of the coating is higher, the friction coefficient is lower and the corrosion resistance is better; meanwhile, the air supply efficiency is improved; the energy utilization rate is increased.
Drawings
FIG. 1 is a schematic flow chart of a coating method for a natural gas transportation pipeline according to an embodiment of the invention;
FIG. 2 is a schematic diagram illustrating the steps of inspecting a natural gas transportation pipeline according to an embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating a step of inspecting a pipeline for defects in a coating method for a natural gas transportation pipeline according to an embodiment of the present invention;
FIG. 4 is a schematic diagram illustrating a step of inspecting a pipeline for contaminants in the coating method for a natural gas transportation pipeline according to an embodiment of the present invention;
FIG. 5 is a schematic diagram illustrating a step of pretreating a natural gas pipeline according to a coating method for coating the natural gas pipeline according to an embodiment of the invention;
FIG. 6 is a schematic diagram illustrating a step of performing shot blasting on a pipeline in the coating method for a natural gas conveying pipeline according to the embodiment of the invention;
fig. 7 is a schematic diagram illustrating a step of cleaning deposits in a natural gas pipeline according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the present embodiment provides a coating method for a natural gas transportation pipeline, comprising the following steps:
s1, checking the pipeline;
s2, preprocessing the pipeline;
s3, dedusting the pipeline;
s4, coating the surface of the outer wall of the pipeline;
s5, winding and protecting the end of the pipeline with the coated outer wall by using an adhesive tape;
s6, coating the inner wall of the pipeline;
s7, carrying out accelerated curing on the coating;
s8 process checks the finished coated pipes and stacks the qualified pipes for transportation and installation.
The technical means that the surface of the inner wall of the pipeline is coated after the surface of the outer wall of the pipeline is coated is changed into the technical means that the surface of the inner wall of the pipeline is coated after the surface of the outer wall of the pipeline is coated, so that the damage to the surface of the coating on the inner wall in the process of coating the outer wall after the inner wall is coated is reduced, the smoothness of the surface of the inner wall is improved, the obstruction to gas delivery is reduced, and the gas delivery efficiency is improved; on the other hand, after the outer wall surface is coated, the pipeline has residual heat, so that the preheating energy consumption before the inner wall is coated can be reduced, and the energy utilization rate is increased. As can be understood by those skilled in the art, the end of the pipeline is wrapped and protected by the adhesive tape, so that damage to the end coating of the pipeline is reduced as much as possible in the process of coating the inner wall after the outer wall of the pipeline is coated, and the quality of the coating is ensured.
As shown in fig. 2, the step of S1 checking the pipeline includes:
s11 placing the pipe on a platform of a horizontal surface;
s12, carrying out defect inspection on the pipeline;
s13 performs a contamination check on the pipeline.
As shown in fig. 3, the S12 performs defect inspection on the pipe, thereby including the following steps:
inspecting the height of the welding seam on the inner surface and the outer surface of the pipeline;
checking the number of the falling pits on the surface of the pipeline;
inspecting the number of the corrosion pits on the surface of the pipeline;
inspecting the damage degree of the pipeline surface groove;
checking the ovality of the pipeline port;
the degree of bending of the pipe body is checked.
Those skilled in the art will appreciate that the centralized stacking process is performed on pipes that do not meet inspection standards.
As shown in fig. 4, the S13 performs a contamination check on the pipeline, including:
s131, checking whether the inner wall surface and the outer wall surface of the pipeline contain grease or oil stain marks or not, and removing the grease or oil stain marks by using a high-volatility grease stain cleaning agent;
s132, checking whether the salt content of the inner wall surface and the outer wall surface of the pipeline is higher than or equal to 20 mg \ square meter; when the concentration is higher than or equal to 20 mg/square meter, a high-pressure water gun is adopted for salt removal treatment; if the concentration is lower than 20 mg/square meter, salt removing treatment is not carried out;
as shown in fig. 5, the S2 is used to pre-process the pipeline, including:
s21, drying the pipeline by adopting a flame direct heating method;
s22 detects the temperature of the dried pipe and maintains it at 60 ℃.
As can be understood by those skilled in the art, the method of directly heating by flame not only can burn and remove combustible pollutants on the surface of the pipeline, but also can remove condensed pollutants on the surface of the pipeline; meanwhile, the pipeline can be preheated by directly heating the pipeline by flame, so that the pipeline is kept at a temperature matched with the subsequent spraying process.
As shown in fig. 6, the step S2 of preprocessing the pipeline further includes a step of performing shot blasting on the pipeline, which specifically includes:
s231, placing the pipeline on a pipeline rack and enabling the inner cavity of the pipeline to be in a negative pressure state;
s232, performing shot blasting treatment on the inner wall and the outer wall of the pipeline by using a mixture of steel shots and steel grit as an abrasive material, so that the surface roughness of the pipeline reaches Rz30 micrometers to Rz50 micrometers;
s233 separates the abrasive at the end of the pipe by using an air flow and conveys the separated abrasive to a grinding hopper by a conveyor belt.
As can be understood by those skilled in the art, the quality of the shot blasting treatment on the pipeline directly affects the adhesion of the coating layers on the inner surface and the outer surface and the quality of the coating layers, and is an important link of the coating method for the natural gas conveying pipeline provided by the embodiment.
The step S2 is that the pipeline is pretreated, and the separated abrasive is filtered, so that dust and waste steel grit are separated from the continuously used abrasive, and the continuously used abrasive is conveyed into a grinding hopper through a conveying belt; and conveying the dust and the waste steel sand into a waste hopper through a conveying belt and further carrying out fertilizer treatment meeting the environmental protection standard.
As can be understood by those skilled in the art, on the basis of ensuring the surface treatment quality, the full utilization of steel shots and steel grits can be ensured, and the environmental pollution can not be caused to meet the environmental protection standard.
As shown in fig. 7, the step of performing pretreatment on the pipeline by S2 and cleaning deposits on the pipeline after shot blasting, specifically includes:
s241, vertically placing the pipeline, and pouring out steel shots and steel grits in the pipeline;
s242, spraying air flow into the pipeline by using a spray gun at the top of the pipeline, and sucking by using a dust collector at the bottom of the pipeline;
it will be appreciated by those skilled in the art that this ensures that all deposits and dust from the interior of the duct are sucked into the cleaner.
In the coating method for the natural gas transportation pipeline provided by this embodiment, in the step of coating the inner wall of the pipeline, the thermal spraying process is adopted to coat the alumina powder doped with the nano-scale particles as a coating on the surface of the inner wall of the pipeline.
The alumina powder is AT13 powder.
The nanoscale particles are Al2o3-13 wt.% Tio2 powder in a nano-agglomerated state.
As can be understood by those skilled in the art, when the nano-agglomerated Al2o3-13 wt.% Tio2 powder is added into the macroscopic AT13 powder, the surface of the coating has better flat laying performance, the uniformity of the coating structure is higher, the residual stress of the coating is lower, the hardness of the coating is higher, the friction coefficient is lower, and the corrosion resistance is better.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A coating method for a natural gas conveying pipeline is characterized by comprising the following steps:
s1, checking the pipeline;
s2, preprocessing the pipeline;
s3, dedusting the pipeline;
s4, coating the surface of the outer wall of the pipeline;
s5, winding and protecting the end of the pipeline with the coated outer wall by using an adhesive tape;
s6, coating the inner wall of the pipeline;
s7, carrying out accelerated curing on the coating;
s8 process checks the finished coated pipes and stacks the qualified pipes for transportation and installation.
2. The method for coating a natural gas transportation pipe as claimed in claim 1, wherein the step of inspecting the pipe S1 comprises:
s11 placing the pipe on a platform of a horizontal surface;
s12, carrying out defect inspection on the pipeline;
s13 performs a contamination check on the pipeline.
3. The method for coating a natural gas transportation pipeline according to claim 2, wherein the step of S12 performing defect inspection on the pipeline comprises the steps of:
inspecting the height of the welding seam on the inner surface and the outer surface of the pipeline;
checking the number of the falling pits on the surface of the pipeline;
inspecting the number of the corrosion pits on the surface of the pipeline;
inspecting the damage degree of the pipeline surface groove;
checking the ovality of the pipeline port;
the degree of bending of the pipe body is checked.
4. The method for coating a natural gas transportation pipeline according to claim 3, wherein the S13 is used for checking the pipeline for contaminants, and comprises the following steps:
s131, checking whether the inner wall surface and the outer wall surface of the pipeline contain grease or oil stain marks or not, and removing the grease or oil stain marks by using a high-volatility grease stain cleaning agent;
s132, checking whether the salt content of the inner wall surface and the outer wall surface of the pipeline is higher than or equal to 20 mg \ square meter; when the concentration is higher than or equal to 20 mg/square meter, a high-pressure water gun is adopted for salt removal treatment; if the concentration is lower than 20 mg/square meter, the salt removing treatment is not carried out.
5. The method for coating a natural gas transportation pipeline according to claim 4, wherein the step S2 is to pretreat the pipeline, and comprises the steps of:
s21, drying the pipeline by adopting a flame direct heating method;
s22 detects the temperature of the dried pipe and maintains it at 60 ℃.
6. The method of coating a natural gas transportation pipeline as claimed in claim 5, further comprising:
s231, placing the pipeline on a pipeline rack and enabling the inner cavity of the pipeline to be in a negative pressure state;
s232, performing shot blasting treatment on the inner wall and the outer wall of the pipeline by using a mixture of steel shots and steel grit as an abrasive material, so that the surface roughness of the pipeline reaches Rz30 micrometers to Rz50 micrometers;
s233 separates the abrasive at the end of the pipe by using an air flow and conveys the separated abrasive to a grinding hopper by a conveyor belt.
7. The method for coating a natural gas transportation pipeline according to claim 6, wherein the step S2 is to pretreat the pipeline, and further comprises:
filtering the separated grinding materials, so that dust and waste steel grit are separated from the grinding materials which are continuously used, and conveying the grinding materials which are continuously used into a grinding hopper through a conveying belt;
and conveying the dust and the waste steel sand into a waste hopper through a conveying belt and further carrying out fertilizer treatment meeting the environmental protection standard.
8. The method for coating a natural gas transportation pipeline according to claim 7, wherein the step S2 is performed by pretreating the pipeline, and further comprising:
s241, vertically placing the pipeline, and pouring out steel shots and steel grits in the pipeline;
and S242, spraying air flow into the pipeline by using a spray gun at the top of the pipeline, and sucking by using a dust collector at the bottom of the pipeline.
9. The method for coating a natural gas transportation pipe according to any one of claims 1 to 8, wherein in the step of coating the inner wall of the pipe, an alumina powder doped with nano-scale particles is applied as a coating material to the inner wall surface of the pipe by a thermal spraying process.
10. The method of coating a natural gas transportation pipeline according to claim 9, wherein the aluminum oxide powder is AT13 powder; the nano-scale particles are Al in a nano-agglomeration state2O3-13wt.％TiO2And (3) powder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202010087671.1A CN111330818A (en) | 2020-02-12 | 2020-02-12 | Coating method of natural gas conveying pipeline |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010087671.1A CN111330818A (en) | 2020-02-12 | 2020-02-12 | Coating method of natural gas conveying pipeline |
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| CN111330818A true CN111330818A (en) | 2020-06-26 |
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| CN202010087671.1A Pending CN111330818A (en) | 2020-02-12 | 2020-02-12 | Coating method of natural gas conveying pipeline |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118483316A (en) * | 2024-07-10 | 2024-08-13 | 西安金时利和自动化工程有限公司 | Identification method for detecting internal and external defects in oil and gas pipeline magnetic leakage |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102604536A (en) * | 2012-01-16 | 2012-07-25 | 南昌航空大学 | Method for preparing temperature-resistant and corrosion-resistant aluminum oxide/organic silicon/silicon dioxide hybridized coating |
| CN204412581U (en) * | 2015-01-26 | 2015-06-24 | 天津市乾丰防腐保温工程有限公司 | A kind of anti-corrosive steel tube is automatically coated with coating line fast |
| CN106824634A (en) * | 2017-01-24 | 2017-06-13 | 新疆登煌管业有限公司 | A kind of production method of plastics coated tube |
| CN109877021A (en) * | 2019-01-31 | 2019-06-14 | 无锡麦格拉斯新材料有限公司 | A kind of preparation method of oil/gas well anti-corrosion wax control tubing |
-
2020
- 2020-02-12 CN CN202010087671.1A patent/CN111330818A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102604536A (en) * | 2012-01-16 | 2012-07-25 | 南昌航空大学 | Method for preparing temperature-resistant and corrosion-resistant aluminum oxide/organic silicon/silicon dioxide hybridized coating |
| CN204412581U (en) * | 2015-01-26 | 2015-06-24 | 天津市乾丰防腐保温工程有限公司 | A kind of anti-corrosive steel tube is automatically coated with coating line fast |
| CN106824634A (en) * | 2017-01-24 | 2017-06-13 | 新疆登煌管业有限公司 | A kind of production method of plastics coated tube |
| CN109877021A (en) * | 2019-01-31 | 2019-06-14 | 无锡麦格拉斯新材料有限公司 | A kind of preparation method of oil/gas well anti-corrosion wax control tubing |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118483316A (en) * | 2024-07-10 | 2024-08-13 | 西安金时利和自动化工程有限公司 | Identification method for detecting internal and external defects in oil and gas pipeline magnetic leakage |
| CN118483316B (en) * | 2024-07-10 | 2024-09-13 | 西安金时利和自动化工程有限公司 | Identification method for detecting internal and external defects in oil and gas pipeline magnetic leakage |
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Application publication date: 20200626 |
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| RJ01 | Rejection of invention patent application after publication |