KR101717675B1 - A method of manufacturing corrosion protected iron pipe - Google Patents

A method of manufacturing corrosion protected iron pipe Download PDF

Info

Publication number
KR101717675B1
KR101717675B1 KR1020150067364A KR20150067364A KR101717675B1 KR 101717675 B1 KR101717675 B1 KR 101717675B1 KR 1020150067364 A KR1020150067364 A KR 1020150067364A KR 20150067364 A KR20150067364 A KR 20150067364A KR 101717675 B1 KR101717675 B1 KR 101717675B1
Authority
KR
South Korea
Prior art keywords
coating
layer
alloy
zinc
iron pipe
Prior art date
Application number
KR1020150067364A
Other languages
Korean (ko)
Other versions
KR20160134010A (en
Inventor
박정용
김영훈
Original Assignee
한국주철관공업주식회사
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 한국주철관공업주식회사 filed Critical 한국주철관공업주식회사
Priority to KR1020150067364A priority Critical patent/KR101717675B1/en
Publication of KR20160134010A publication Critical patent/KR20160134010A/en
Application granted granted Critical
Publication of KR101717675B1 publication Critical patent/KR101717675B1/en

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
    • F16L58/02—Protection of pipes or pipe fittings against corrosion or incrustation by means of internal or external coatings
    • F16L58/04—Coatings characterised by the materials used
    • F16L58/08—Coatings characterised by the materials used by metal
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
    • C23C4/123—Spraying molten metal
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L9/00—Rigid pipes
    • F16L9/02—Rigid pipes of metal

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Coating By Spraying Or Casting (AREA)

Abstract

The present invention relates to a method of manufacturing a treated iron pipe, and more particularly, to a method of manufacturing a corrosion-resistant iron pipe by spraying a zinc alloy having excellent corrosion resistance on the surface of the iron pipe, The present invention relates to a method of manufacturing a treated iron pipe with a maximized coating.
The present invention relates to a method of manufacturing a steel pipe, comprising the steps of: pre-treating a surface of a steel pipe to remove foreign substances on the surface of the steel pipe having a hollow shape inside thereof by brushing or blasting; A film forming step of forming an alloy thermal spray coating layer by spraying a metal alloy onto the surface of the iron tube while fixing both sides of the iron tube to rotate the iron tube with a foreign material removed therefrom at a constant speed; Forming a coating permeation layer on the surface of the alloy thermal spray coating layer by coating a pore penetration coating made of an epoxy resin for penetrating the pores of the alloy thermal spray coating layer on the surface of the alloy thermal spray coating layer,
Forming coating layer forming step of coating an epoxy-modified alkyd coating for protecting the alloy thermal spray coating layer and the coating layer on the surface of the coating-permeable layer to form a coating protective layer, In the step of forming a film permeation layer, a coating permeation layer is formed by coating with a coating amount of 20 to 60 g / m < 2 > so that the metal alloy in the film formation step is a zinc alloy containing zinc, To 90 wt%, aluminum to 0.1 wt% to 40 wt%, and magnesium to 0.1 wt% to 10 wt%.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001]

The present invention relates to a method of manufacturing a treated iron pipe, and more particularly, to a method of manufacturing a corrosion-resistant iron pipe by spraying a zinc alloy having excellent corrosion resistance on the surface of the iron pipe, The present invention relates to a method of manufacturing a treated iron pipe with a maximized coating.

Generally, steel pipes are mainly used for transporting water pipes and other liquids. Most of them are buried in the underground, so the inner and outer surfaces are coated so as to withstand various external environments.

For example, in the 'steel pipe for waterworks coated with silver nano (publication No. 10-2008-0070304)', silver nano powder is included in a synthetic resin for lining the inner surface of a water pipe or a cast iron pipe to form a synthetic resin film containing a first silver nano 1 Silver nanoparticles were sprayed onto the surface of the synthetic resin film containing fine silver nanoparticles to prevent the rust from being oxidized by forming the second silver nanoparticle coating.

On the other hand, as a method of conventional iron pipe method, a method of coating a bituminous system type paint or a method of coating a bituminous system type paint after zinc flame is mainly used. In addition, high-corrosive soils, such as those affected by seawater and landfills, may have additional PE sleeves installed on site to achieve a higher leveling effect.

However, in order to construct the PE sleeve, it is necessary to know the construction method and precautions, it takes extra labor cost and construction time, and it is difficult to obtain proper effect when the worker's proficiency or the surrounding environment is erroneously applied or the PE sleeve There has been a problem that the steel pipe is damaged.

Korean Patent Laid-Open No. 10-2008-0070304, Jul. 30, 2008.

The present invention has been made in order to overcome the above-mentioned problems, and it is an object of the present invention to provide a method for maximizing corrosion prevention of a steel pipe by applying a strong corrosion resistant coating after forming an alloy thermal spray coating layer by spraying a zinc alloy, And a method of manufacturing a treated iron pipe.

delete

delete

delete

delete

delete

According to an aspect of the present invention, there is provided a method of manufacturing a steel pipe, comprising the steps of: pre-treating a surface of the steel pipe to remove foreign substances on the surface of the steel pipe having a hollow shape therein by brushing or blasting; Forming a coating layer on the metal alloy by spraying a metal alloy onto the surface of the iron pipe while rotating both sides of the iron pipe to fix the iron pipe with the foreign substance removed at a constant speed; And forming a coating permeation layer on the surface of the alloy thermal spray coating layer by coating a pore penetration coating made of an epoxy resin to permeate the pores of the alloy thermal spray coating layer, [0030] Next to the layer forming step, the method further includes forming a coating protective layer on the surface of the film permeation layer to coat the alloy thermal spray coating layer and the coating layer with an epoxy-modified alkyd coating to protect the coating layer, , The coating layer is formed by coating the pore penetration coating with a coating amount of 20 to 60 g / m 2 in the coating layer formation step, and the metal alloy in the coating layer formation step is a zinc alloy containing zinc, Characterized in that the zinc alloy comprises 50 to 90 wt% of zinc, 0.1 to 40 wt% of aluminum and 0.1 to 10 wt% of magnesium. The crude way of a technical base.

delete

Preferably, the metal alloy in the film-forming step is a zinc alloy including zinc. The zinc alloy includes 60 to 90 wt% zinc, 0.1 to 30 wt% tin, and 0.1 to 10 wt% magnesium .

delete

Or the metal alloy of the film forming step may contain 95 to 99.99 wt% of any one main metal selected from the group consisting of zinc, tin, aluminum and magnesium, and may contain zinc, tin, aluminum and magnesium , And 0.01 to 5 wt% of at least one of the sub-metals selected from the group consisting of

delete

According to the present invention, there is provided a method of manufacturing a corrosion-treated iron pipe according to the present invention, which comprises forming a thermal sprayed coating, a coating permeable layer and a coating protective layer on the surface of a steel pipe, It has an effect of improving the method and stability of the steel pipe by improving the compressibility, abrasion resistance, chemical corrosion resistance and chemical resistance, and has an effect of being easy on site construction.

1 is a perspective view of a preferred embodiment of the present invention;
2 is a flowchart according to a preferred embodiment of the present invention;

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view of a preferred embodiment of the present invention. As shown in FIG. 1, the present invention may include an alloy thermal spray coating layer 100, a coating penetration layer 200, and a coating protection layer 300 on an iron pipe P having a hollow form therein.

However, the iron pipe (P) is manufactured by centrifugal force by putting the molten casting in a centrifugal casting mold. The iron pipe (P) is obvious to a person skilled in the art and a description thereof will be omitted below.

The alloy thermal spray coating layer 100 of the present invention is configured such that a metal alloy is sprayed on the surface of the iron pipe P to form the iron pipe P. Here, the metal alloy is a zinc alloy including zinc, and may include 60 to 90 wt% of zinc, 0.1 to 30 wt% of tin, and 0.1 to 10 wt% of magnesium. Or the metal alloy is a zinc alloy including zinc, and may include 50 to 90 wt% of zinc, 0.1 to 40 wt% of aluminum, and 0.1 to 10 wt% of magnesium. Or metal alloy is selected from the group consisting of zinc, tin, aluminum and magnesium, which contains 95 to 99.99 wt% of any one main metal selected from the group consisting of zinc, tin, aluminum and magnesium, And 0.01 to 5 wt% of any one or more sub-metals.

The film permeation layer (200) of the present invention has a structure in which the surface of the alloy thermal spray coating layer (100) is coated with a pore penetration coating made of an epoxy resin for penetrating the pores of the alloy thermal spray coating layer (100).

The film protective layer 300 of the present invention is an additional constitution composed of an epoxy modified alkyd coating for protecting the alloy thermal spray coating layer 100 and the coating layer 200 on the surface of the coating layer 200.

A detailed description of the above-described alloy thermal spray coating layer 100, the coating film permeation layer 200, and the coating protection layer 300 will be described in detail.

2 is a flow chart according to a preferred embodiment of the present invention. As shown in FIG. 2, the method for manufacturing the corrosion-treated iron pipe according to the preferred embodiment of the present invention can be divided into a pretreatment step, a film formation step, a film permeation layer formation step and a film protective layer formation step.

First, the pretreatment step is a step of removing foreign substances on the surface of the iron pipe P having a hollow shape inside thereof (S100)

The steel pipe P is shrinked while being cooled and then made into a high temperature. At this time, fine cracks such as cracks and pin holes are generated on the surface of the steel pipe P at this time. Not only does the surface of the iron pipe (P) become rough due to such fine gaps, but also microorganisms adhere to the fine gaps on the surface of the iron pipe (P) and reproduce, resulting in scale or foreign matter.

Briefly, the pretreatment step may be a step of cleaning the iron pipe P by brushing or blasting the surface of the iron pipe P where scale or foreign matter remains, which is a defective factor that hinders the corrosion treatment, and removing it.

Next, in the film forming step, a metal alloy is sprayed on the surface of the iron pipe P to form the alloy thermal spray coating layer 100 in order to form the iron pipe P from which the foreign substance is removed (S200)

That is, after the steel pipe P is fixed at both sides of the iron pipe P having passed through the pretreatment step with a rotary cone type jig, the iron pipe P is rotated at a constant speed, and a metal alloy Is sprayed and coated.

More specifically, the iron pipe P from which foreign substances have been removed is placed in the tube aligner through the transfer means, and then both sides of the iron pipe P are fixed. The metal alloy P is sprayed onto the surface of the iron pipe P while rotating the iron pipe P fixed at a predetermined speed.

The metal alloy in this step means an alloy excellent in coating performance such as corrosion resistance, abrasion resistance, and chemical resistance. In the present invention, the metal alloy is divided into three kinds.

1) The metal alloy is a zinc alloy including zinc, and may be a Zn-Sn-Mg alloy containing 60 to 90 wt% of zinc, 0.1 to 30 wt% of tin and 0.1 to 10 wt% of magnesium.

Since zinc is an active metal, it tends to ionize more than iron, which is a component of iron pipe (P). Therefore, the surface of iron pipe (P) is protected. When zinc is destroyed, zinc tends to ionize, And serves to extend the lifetime of the iron pipe (P) by the non-ionized zinc method.

If zinc is added in an amount of less than 60 wt%, it may be insufficient to prolong the lifetime of the iron pipe (P). If it exceeds 90 wt%, no excellent effect is exhibited On the contrary, since the physical properties of the zinc alloy may be deteriorated, zinc is preferably contained in the range of 60 to 90 wt%.

However, the content of zinc is merely an example, and it is possible to control the amount of the zinc alloy including zinc in a fluid amount so that the amount of tin and magnesium is the remaining amount.

The tin is not easily oxidized and has high resistance to corrosion, so that the tin serves to prevent corrosion of the zinc alloy.

When such tin is added in an amount of less than 0.1 wt%, corrosion problems of the zinc alloy may occur. If the tin exceeds 30 wt%, it may cause brittleness when exposed to heat, so that tin is contained in the range of 0.1 to 30 wt% .

The magnesium plays a role in prolonging the life of the iron pipe (P) due to the durability and corrosion resistance of zinc.

If the content of magnesium is less than 0.1 wt%, it is insufficient to support and maintain the durability and corrosion resistance of the formed alloy thermal spray coating layer 100, and if it is more than 10 wt% In addition, magnesium may be included in the range of 0.1 to 10 wt%, because it may cause a problem that it may be an oxidizing factor due to its mechanical properties.

2) The metal alloy is a zinc alloy including zinc, and may be a Zn-Al-Mg alloy containing 50 to 90 wt% of zinc, 0.1 to 40 wt% of aluminum and 0.1 to 10 wt% of magnesium.

Since zinc is an active metal, it tends to ionize more than iron, which is a component of iron pipe (P). Therefore, the surface of iron pipe (P) is protected. When zinc is destroyed, zinc tends to ionize, And serves to extend the lifetime of the iron pipe (P) by the non-ionized zinc method.

If zinc is added in an amount of less than 50 wt%, it may be insufficient to prolong the life of the iron pipe (P). If it exceeds 90 wt%, no superior effect is exhibited On the contrary, since the physical properties of the zinc alloy may be deteriorated, zinc is preferably contained in the range of 50 to 90 wt%.

However, the content of zinc is merely an example, and it is possible to control the amount of zinc in the zinc alloy including the content of aluminum and magnesium in the remaining amount.

Since the aluminum has good resistance to erosion and corrosion, is rich in malleability and ductility, has a small specific gravity, and has high tensile strength, heat and electric conductivity, and has high corrosion resistance in the atmosphere, Durability, and tensile strength without lowering the hardness of the steel sheet 100.

If the aluminum content is less than 0.1 wt%, the tensile strength may be lowered. If the aluminum content exceeds 40 wt%, the hardness may be lowered. Therefore, aluminum is preferably contained in an amount of 0.1 to 40 wt% of the zinc alloy.

The magnesium plays a role in prolonging the life of the iron pipe (P) due to the durability and corrosion resistance of zinc.

If the content of magnesium is less than 0.1 wt%, it is insufficient to support and maintain the durability and corrosion resistance of the formed alloy thermal spray coating layer 100, and if it is more than 10 wt% In addition, magnesium may be included in the range of 0.1 to 10 wt%, because it may cause a problem that it may be an oxidizing factor due to its mechanical properties.

3) The metal alloy is selected from the group consisting of zinc, tin, aluminum and magnesium, which contains 95 to 99.99 wt% of any one main metal selected from the group consisting of zinc, tin, aluminum and magnesium, And 0.01 to 5 wt% of at least one of the sub-metals.

The third case is an additional configuration. It means that it is possible to use any of zinc, tin, aluminum, and magnesium, which is a metal having a higher ionization tendency than iron, Means a metal alloy in which at least one sub-metal selected from the group consisting of zinc, tin, aluminum and magnesium, which is a metal having a large ionization tendency, is added in the range of 0.01 to 5 wt%.

Here, since the main metal forming most of the metal alloy is a metal having a tendency to ionize more than iron, it is preferable that the metal is added in the range of 0.01 to 5 wt% in order to support the function of the iron pipe (P) of the main metal. For reference, the main metal may be added in the range of 95 to 99.99 wt%.

Next, in the step of forming a film permeation layer, a coating permeable layer made of an epoxy resin is coated on the surface of the alloy thermal spray coating layer 100 to penetrate the pores of the alloy thermal spray coating layer 100 to form a coating permeation layer 200 (S300)

Specifically, the film permeation layer 200 is intended to supplement fine pores found by magnifying observation 1000 times under a microscope although it may not be visible to the naked eye in the alloy thermal sprayed coating layer 100 sprayed on the surface of the iron pipe (P). That is, the alloy thermal sprayed coating layer 100 itself becomes activated due to pores and is liable to be contaminated. For example, when various foreign substances or the like are adsorbed to the pores, the efficiency may be emphasized because the method is inhibited.

Thus, in the step of forming a coating-permeating layer, the coating of the pore-penetrating coating excellent in permeability and water-tightness is prevented from forming an air layer in the pores, thereby improving the surface strength of the alloy thermal spray coating layer 100, Thereby enhancing the adhesion strength and durability with the thermal spray coating layer 100.

Here, the coating material for pore penetration is applied to the surface of the alloy thermal spray coating layer 100 at a coating amount of 20 to 60 g / m 2. When the coating amount of less than 20 g / m 2 is applied to the alloy thermal spray coating layer 100, The physical properties of the coating layer 100 may be deteriorated. When the coating is applied in an amount exceeding 60 g / m 2 , the surface hardness may be lowered when a coating film of the coating layer 200 is formed. In view of this, it is preferable that the coating material for pore penetration made of an epoxy resin is applied in a coating amount of 20 to 60 g / m 2 , but it may be applied in an amount of 30 g / m 2 or more.

In addition, the pore penetration paint can be uniformly applied to the corners of the iron pipe (P) by using an apparatus such as an airless paint machine, a roller and a brush, and is not limited to the type of the above- It is acceptable to use any apparatus that can be applied.

Lastly, in the step of forming a film protective layer, an epoxy-modified alkyd coating for protecting the alloy thermal spray coating layer 100 and the coating layer 200 is coated on the surface of the film penetration layer 200 as an additional step, 300 are formed. (S400)

The coating layer 300 is applied to prevent destruction of the alloy thermal spray coating layer 100 and the coating layer 200 coated on the surface of the iron pipe P, (Resin) paint is additionally applied.

The inventors of the present invention have conducted numerous experiments and found that when an epoxy-modified alkyd paint is formed as a film-forming layer 300, interfacial oxidation and condensation occur due to the organic acids of microorganisms such as fungi that can grow at the interface, It is confirmed that the performance degradation is prevented.

In addition, the alloy thermal spray coating layer 100 and the film penetration layer 200 are sequentially formed on the surface of the iron pipe P and then the thermal spray coating layer 100 and the coating permeation layer It is possible to maximize the protection of the battery 200.

Meanwhile, as an alternative to the above-described method, it is possible to perform a method of maximizing corrosion prevention by applying a zinc component coating on the surface of the iron pipe P in various forms and a coating containing the zinc component.

That is, after scales and foreign substances are removed from the surface of the iron pipe (P) in a complicated form, it is coated on the iron pipe surface using a paint containing a zinc chemical component, and then a paint containing a zinc chemical component is painted on the painted surface with an epoxy- Or may be carried out in the order of coating the base paint.

As described above, according to the present invention, there is provided a method of manufacturing a corrosion-treated iron pipe, comprising: forming a thermal sprayed coating, a coating layer, and a coating protection layer on a surface of a steel pipe; , Chemical corrosion resistance, chemical resistance and the like, it is possible not only to improve the method and stability of the iron pipe, but also to facilitate the field construction.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention may be embodied otherwise without departing from the spirit and scope of the invention. Therefore, the embodiments disclosed in the present invention are not intended to limit the technical spirit of the present invention, but are for the purpose of explanation, and the scope of technical spirit of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of the claims should be construed as being included in the scope of the present invention.

100: Alloy sprayed coating layer
200: Coating penetration layer
300:
P: Iron pipe

Claims (11)

delete delete delete delete delete A pretreatment step of brushing or blasting the surface of the iron pipe to remove foreign substances on the surface of the iron pipe having a hollow shape inside;
Forming a coating layer on the metal alloy by spraying a metal alloy onto the surface of the iron pipe while rotating both sides of the iron pipe to fix the iron pipe with the foreign substance removed at a constant speed; And
And forming a coating permeation layer on the surface of the alloy thermal spray coating layer by coating a pore penetration coating made of an epoxy resin for penetrating the pores of the alloy thermal spray coating layer,
After the step of forming the film permeation layer,
Further comprising a coating protective layer forming step of forming a coating protective layer on the surface of the coating permeable layer by coating the alloy thermal spray coating layer and an epoxy modified alkyd coating for protecting the coating permeable layer,
In the film permeation layer forming step,
The pore penetration coating material is applied in a coating amount of 20 to 60 g / m 2 to form a coating permeation layer,
The metal alloy in the film formation step is a zinc alloy including zinc,
Wherein the zinc alloy comprises 50 to 90 wt% of zinc, 0.1 to 40 wt% of aluminum, and 0.1 to 10 wt% of magnesium. delete The method according to claim 6,
The metal alloy in the film formation step is a zinc alloy including zinc,
The zinc alloy,
Wherein the magnesium alloy comprises 60 to 90 wt% of zinc, 0.1 to 30 wt% of tin, and 0.1 to 10 wt% of magnesium. delete The method according to claim 6,
The metal alloy in the film-
And 95 to 99.99 wt% of any one main metal selected from the group consisting of zinc, tin, aluminum and magnesium,
And 0.01 to 5 wt% of at least one sub-metal selected from the group consisting of zinc, tin, aluminum, and magnesium, which is more prone to ionization than iron. delete
KR1020150067364A 2015-05-14 2015-05-14 A method of manufacturing corrosion protected iron pipe KR101717675B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150067364A KR101717675B1 (en) 2015-05-14 2015-05-14 A method of manufacturing corrosion protected iron pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150067364A KR101717675B1 (en) 2015-05-14 2015-05-14 A method of manufacturing corrosion protected iron pipe

Publications (2)

Publication Number Publication Date
KR20160134010A KR20160134010A (en) 2016-11-23
KR101717675B1 true KR101717675B1 (en) 2017-03-17

Family

ID=57541263

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020150067364A KR101717675B1 (en) 2015-05-14 2015-05-14 A method of manufacturing corrosion protected iron pipe

Country Status (1)

Country Link
KR (1) KR101717675B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102539109B1 (en) 2022-11-11 2023-06-01 주식회사 수성이앤씨 건축사사무소 Underground round pipe structure filled with internal mortar

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102126740B1 (en) * 2017-12-26 2020-06-25 주식회사 포스코 Method for Manufacturing Composite Coated Steel Pipe and Complex Coated Steel Pipe Made by Such Method
KR102004152B1 (en) * 2019-06-24 2019-07-26 주식회사 아텍 Method of surface treatment for parts of wind power generator

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100313990B1 (en) * 1993-02-18 2001-12-28 장 슈터 Pipe members for underground buried pipes, underground buried pipes and methods of protecting such pipe members
JP2003166078A (en) * 2001-11-30 2003-06-13 Maruyasu Industries Co Ltd Metal tube having corrosion resistant coating layer
JP2009256792A (en) * 2008-03-24 2009-11-05 Kubota Corp Pipe provided with corrosion prevention layer on the outside surface, and method for production thereof

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6430997A (en) * 1987-07-23 1989-02-01 Sumitomo Light Metal Ind Copper alloy pipe with inner-surface corrosionproof coated film for heat exchanger
KR20080070304A (en) 2007-01-26 2008-07-30 케이더불유피티 주식회사 Nano silver coating iron pipe for water supply

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100313990B1 (en) * 1993-02-18 2001-12-28 장 슈터 Pipe members for underground buried pipes, underground buried pipes and methods of protecting such pipe members
JP2003166078A (en) * 2001-11-30 2003-06-13 Maruyasu Industries Co Ltd Metal tube having corrosion resistant coating layer
JP2009256792A (en) * 2008-03-24 2009-11-05 Kubota Corp Pipe provided with corrosion prevention layer on the outside surface, and method for production thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102539109B1 (en) 2022-11-11 2023-06-01 주식회사 수성이앤씨 건축사사무소 Underground round pipe structure filled with internal mortar

Also Published As

Publication number Publication date
KR20160134010A (en) 2016-11-23

Similar Documents

Publication Publication Date Title
EP2867382B1 (en) Outer coating for an underground piping member made from iron, coated piping member and method for depositing the coating
KR101717675B1 (en) A method of manufacturing corrosion protected iron pipe
EP3041971B1 (en) Outer coating for buried iron-based pipe element, coated pipe element, and method for depositing the coating
CN104736915B (en) There is the buried pipe iron pipe element of external coating
JP2726565B2 (en) Buried pipe member, corresponding buried tube and method of protecting said tube member
JP2016199777A (en) Steel material for coating with excellent anticorrosion
US5518793A (en) Pipework element coating and method of applying
CN205908886U (en) Ductile cast -iron pipe
JP2007291440A (en) Corrosion protection coating and method for forming the same
Tator et al. Coating deterioration-A mechanistic overview
KR20130045455A (en) Tape for reducing corrosion
JP2004315873A (en) Steel product made corrosion preventive and corrosion prevention method
US10913861B2 (en) Pipe and pipe support protection process and composition therefor
Zamanzadeh et al. Laboratory and field corrosion investigation of galvanized utility poles
JP2012107342A (en) Corrosion prevention structure of steel and corrosion prevention method of the steel
Al-Sayed et al. Protection of Offshore Platform Caisson Legs with a Vapor Corrosion Inhibitor-A Case Study
RU2201473C2 (en) Method of protracted protection of monuments against corrosion
JPH0219787B2 (en)
JP4652247B2 (en) Steel protection method
RU2001107039A (en) METHOD FOR LONG-TERM PROTECTION OF MONUMENTS FROM CORROSION
Ihom et al. Evaluation Of Post-Weld Corrosion Behaviour Of Subsea Pipeline In A Marine Environment
Surdu A METHOD OF CORROSION PROTECTION APPLIED TO HEAT EXCHANGERS INSTALLATIONS.
Lanterman Coating Deterioration-A Mechanistic Overview
JPS5837389A (en) Corrosion protective method for outer surface of cast iron pipe
JPH1061873A (en) Method for preventing organism adhering to piping or water distribution passage, and piping or water distribution passage

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant