CN202746793U - Steel tube with solvent-free epoxy inner ant-dragging anticorrosion coating - Google Patents
Steel tube with solvent-free epoxy inner ant-dragging anticorrosion coating Download PDFInfo
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- CN202746793U CN202746793U CN 201220300259 CN201220300259U CN202746793U CN 202746793 U CN202746793 U CN 202746793U CN 201220300259 CN201220300259 CN 201220300259 CN 201220300259 U CN201220300259 U CN 201220300259U CN 202746793 U CN202746793 U CN 202746793U
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- epoxy
- steel pipe
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- 238000000576 coating method Methods 0.000 title claims abstract description 65
- 239000011248 coating agent Substances 0.000 title claims abstract description 64
- 239000004593 Epoxy Substances 0.000 title claims abstract description 54
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 45
- 239000010959 steel Substances 0.000 title claims abstract description 45
- 238000003466 welding Methods 0.000 claims abstract description 22
- 239000004110 Zinc silicate Substances 0.000 claims abstract description 11
- 239000000843 powder Substances 0.000 claims abstract description 11
- XSMMCTCMFDWXIX-UHFFFAOYSA-N zinc silicate Chemical compound [Zn+2].[O-][Si]([O-])=O XSMMCTCMFDWXIX-UHFFFAOYSA-N 0.000 claims abstract description 11
- 235000019352 zinc silicate Nutrition 0.000 claims abstract description 11
- 238000005260 corrosion Methods 0.000 claims description 29
- 230000007797 corrosion Effects 0.000 claims description 28
- 239000002904 solvent Substances 0.000 claims description 25
- 230000002401 inhibitory effect Effects 0.000 claims description 23
- 239000003973 paint Substances 0.000 claims description 22
- 230000003260 anti-sepsis Effects 0.000 claims description 12
- 230000037452 priming Effects 0.000 claims description 10
- 150000003839 salts Chemical class 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract 1
- 239000003595 mist Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 230000002421 anti-septic effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000003112 inhibitor Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 125000002723 alicyclic group Chemical group 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000004848 polyfunctional curative Substances 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
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- Application Of Or Painting With Fluid Materials (AREA)
- Paints Or Removers (AREA)
Abstract
The utility model discloses a steel tube with a solvent-free epoxy inner ant-dragging anticorrosion coating, which is applied to buried gas conveying pipelines. The steel tube with the solvent-free epoxy inner ant-dragging anticorrosion coating is characterized in that a universal epoxy primer inner coating and the solvent-free epoxy inner ant-dragging anticorrosion coating are sequentially coated on the inner surface of a steep tube without a preserved welding region; a clinkering epoxy powder outer anticorrosion coating and a concrete aggravating layer are sequentially coated on the outer surface of the steel tube without a reserved welding region; and inorganic zinc silicate weldable anticorrosion coatings are coated on the inner surface and the outer surface of the reserved welding region. The steel tube has the beneficial effects that the solvent-free epoxy inner ant-dragging anticorrosion coating has excellent anti-dragging effect and anticorrosion performance, and especially the salt mist resistant performance can be more than 3000h. The steel tube with the solvent-free epoxy inner ant-dragging anticorrosion coating is simple in production technology, is high in cost performance, can be used for seabed gas conveying pipelines, and also can be used for the buried gas conveying pipelines.
Description
Technical field
The utility model relates to seabed gas pipeline technical field, and particularly a kind of steel pipe that can be used for buried gas pipeline is a kind of steel pipe with drag reduction corrosion-inhibiting coating in the non-solvent epoxy.
Background technique
At present, in the world for the Anti-corrosion design of seabed gas pipeline, the general long-effective protection that all needs more than 20 years, and because the discharge pressure of seabed gas pipeline is high, rock gas is unprocessed, corrosivity is strong, therefore its corrosion protection has been proposed high requirement.Domestic main employing is selected the Corrosion Resisting Steel tube material or add the method for corrosion inhibitor in rock gas, and Corrosion Resisting Steel tube material cost is high; It is comparatively complicated to add the corrosion inhibitor final-period management, and GAS QUALITY is easily caused harmful effect.
The model utility content
The purpose of this utility model is: a kind of steel pipe with drag reduction corrosion-inhibiting coating in the non-solvent epoxy is provided, be applicable to seabed gas pipeline inwall, easy construction, have the steel pipe that good resistance reducing performance and antiseptic property, salt spray resistance can reach drag reduction corrosion-inhibiting coating in the above non-solvent epoxy of 3000h.
The technical solution adopted in the utility model is: the steel pipe with drag reduction corrosion-inhibiting coating in the non-solvent epoxy, comprise steel pipe, at the two ends of steel pipe the reservation welding zone is arranged, it is characterized in that: the internal surface except reserving the welding zone at steel pipe is coated with drag reduction antisepsis finishing paint coating in universal epoxy priming paint undercoating and the non-solvent epoxy successively, the outer surface except reserving the welding zone at steel pipe is coated with clinkery epoxy powder outer anti-corrosive coating and concrete weight-coating successively, the internal surface of reservation welding zone and outer surface are coated with inorganic zinc silicate and can weld corrosion-inhibiting coating, the length of steel pipe is 8～16m, internal diameter is 200～1500mm, wall thickness is 5～30mm, reserve each long 100mm of every end of welding zone, the internally coated thickness of universal epoxy priming paint is 0.04～0.08mm, the thickness of drag reduction antisepsis finishing paint coating is 0.1～0.2mm in the non-solvent epoxy, the thickness of clinkery epoxy powder outer anti-corrosive coating is 0.5～0.8mm, the concrete weight layer thickness is 50～700mm, and the thickness that inorganic zinc silicate can weld corrosion-inhibiting coating is 0.03～0.05mm.
The more excellent steel pipe with drag reduction corrosion-inhibiting coating in the non-solvent epoxy, the length that it is characterized in that steel pipe is that 10m, internal diameter are that 350mm, wall thickness are 9mm, reserve each long 100mm of every end of welding zone, the internally coated thickness of universal epoxy priming paint is 0.05mm, the thickness of drag reduction antisepsis finishing paint coating is 0.15mm in the non-solvent epoxy, the thickness of clinkery epoxy powder outer anti-corrosive coating is 0.6mm, and the concrete weight layer thickness is 150mm, and the thickness that inorganic zinc silicate can weld corrosion-inhibiting coating is 0.04mm.
Of the present utility model to have in the non-solvent epoxy steel pipe manufacture process of drag reduction corrosion-inhibiting coating as follows: with internal surface, the outer surface derusting by sandblasting of steel pipe, outer surface at steel pipe applies the clinkery epoxy powder outer anti-corrosive coating successively, concrete weight-coating, then the internal surface at steel pipe applies universal epoxy priming paint undercoating successively, drag reduction antisepsis finishing paint coating in the non-solvent epoxy applies respectively inorganic zinc silicate on the inside and outside surface of the reservation welding zone at steel pipe two ends and can weld corrosion-inhibiting coating.Above-mentioned prefabricated steel pipe is transported to the constructions such as weld at the scene, repaired mouth and becomes pipeline.
The beneficial effects of the utility model: the utlity model has the steel pipe of drag reduction corrosion-inhibiting coating in the non-solvent epoxy, resistance reducing performance and antiseptic property are good, and especially the salt spray resistance of drag reduction antisepsis finishing paint coating 4 can reach more than the 3000h in the non-solvent epoxy.Production technology is simple, cost performance is high, can be used for the seabed gas pipeline, also can be used for buried gas pipeline.
Description of drawings
Fig. 1 is the steel pipe generalized section that the utlity model has drag reduction corrosion-inhibiting coating in the non-solvent epoxy.
Among the figure, the 1-steel pipe, 2-reserves the welding zone, 3-universal epoxy priming paint undercoating, drag reduction antisepsis finishing paint coating in the 4-non-solvent epoxy, 5-clinkery epoxy powder outer anti-corrosive coating, the 6-concrete weight-coating, the 7-inorganic zinc silicate can weld corrosion-inhibiting coating.
Embodiment
Embodiment 1: take a steel pipe with drag reduction corrosion-inhibiting coating in the non-solvent epoxy as example, the utility model is described in further detail.
Consult Fig. 1.The utlity model has the steel pipe of drag reduction corrosion-inhibiting coating in the non-solvent epoxy, comprise steel pipe 1, the length of steel pipe 1 is that 10m, internal diameter are that 350mm, wall thickness are 9mm.At the two ends of steel pipe 1 welding zone 2 of reservation is arranged, the length of reserving welding zone 2 is 100mm.
The internal surface except reserving welding zone 2 at steel pipe 1 is coated with drag reduction antisepsis finishing paint coating 4 in universal epoxy priming paint undercoating 3 and the non-solvent epoxy successively.The outer surface except reserving welding zone 2 at steel pipe 1 is coated with clinkery epoxy powder outer anti-corrosive coating 5 and concrete weight-coating 6 successively.The internal surface of reservation welding zone 2 and outer surface are coated with inorganic zinc silicate and can weld corrosion-inhibiting coating 7.
The thickness of universal epoxy priming paint undercoating 3 is 0.05mm, the thickness of drag reduction antisepsis finishing paint coating 4 is 0.15mm in the non-solvent epoxy, the thickness of clinkery epoxy powder outer anti-corrosive coating 5 is 0.6mm, and concrete weight-coating 6 thickness are 150mm, and the thickness that inorganic zinc silicate can weld corrosion-inhibiting coating 7 is 0.04mm.Wherein, drag reduction antisepsis finishing paint coating adopts in the non-solvent epoxy is that in normal temperature cure formation coating, this coating salt spray resistance can reach more than the 3000h by epoxy resin and reactive diluent and the made coating of modification alicyclic ring amine epoxy hardener.
Claims (2)
1. steel pipe with drag reduction corrosion-inhibiting coating in the non-solvent epoxy, comprise steel pipe (1), at the two ends of steel pipe (1) reservation welding zone (2) is arranged, it is characterized in that: the internal surface except reserving welding zone (2) at steel pipe (1) is coated with drag reduction antisepsis finishing paint coating (4) in universal epoxy priming paint undercoating (3) and the non-solvent epoxy successively, the outer surface except reserving welding zone (2) at steel pipe (1) is coated with clinkery epoxy powder outer anti-corrosive coating (5) and concrete weight-coating (6) successively, the internal surface of reservation welding zone (2) and outer surface are coated with inorganic zinc silicate and can weld corrosion-inhibiting coating (7), the length of steel pipe (1) is 8～16m, internal diameter is 200～1500mm, wall thickness is 5～30mm, reserve each long 100mm of every end of welding zone (2), the thickness of universal epoxy priming paint undercoating (3) is 0.04～0.08mm, the thickness of drag reduction antisepsis finishing paint coating (4) is 0.1～0.2mm in the non-solvent epoxy, the thickness of clinkery epoxy powder outer anti-corrosive coating (5) is 0.5～0.8mm, concrete weight-coating (6) thickness is 50～700mm, and the thickness that inorganic zinc silicate can weld corrosion-inhibiting coating (7) is 0.03～0.05mm.
2. the steel pipe with drag reduction corrosion-inhibiting coating in the non-solvent epoxy according to claim 1, it is characterized in that: the length of steel pipe (1) is 10m, internal diameter is 350mm, wall thickness is 9mm, reserve each long 100mm of every end of welding zone (2), the thickness of universal epoxy priming paint undercoating (3) is 0.05mm, the thickness of drag reduction antisepsis finishing paint coating (4) is 0.15mm in the non-solvent epoxy, the thickness of clinkery epoxy powder outer anti-corrosive coating (5) is 0.6mm, concrete weight-coating (6) thickness is 150mm, and the thickness that inorganic zinc silicate can weld corrosion-inhibiting coating (7) is 0.04mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220300259 CN202746793U (en) | 2012-06-21 | 2012-06-21 | Steel tube with solvent-free epoxy inner ant-dragging anticorrosion coating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220300259 CN202746793U (en) | 2012-06-21 | 2012-06-21 | Steel tube with solvent-free epoxy inner ant-dragging anticorrosion coating |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202746793U true CN202746793U (en) | 2013-02-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220300259 Expired - Fee Related CN202746793U (en) | 2012-06-21 | 2012-06-21 | Steel tube with solvent-free epoxy inner ant-dragging anticorrosion coating |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202746793U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113357448A (en) * | 2021-06-07 | 2021-09-07 | 山东东宏管业股份有限公司 | Antistatic internal anti-drag natural gas conveying anti-corrosion steel pipe and preparation method thereof |
-
2012
- 2012-06-21 CN CN 201220300259 patent/CN202746793U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113357448A (en) * | 2021-06-07 | 2021-09-07 | 山东东宏管业股份有限公司 | Antistatic internal anti-drag natural gas conveying anti-corrosion steel pipe and preparation method thereof |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130220 Termination date: 20210621 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |