FBE anti-corrosion steel pipe, that is, Fusion Bonded Epoxy anti-corrosion steel pipe, is an anti-corrosion method that coats the inner and outer walls of the steel pipe with fused epoxy powder. This kind of anti-corrosion steel pipe has been widely used in pipeline engineering at home and abroad because of its excellent anti-corrosion performance and long service life.
FBE anti-corrosion steel pipe, that is, Fusion Bonded Epoxy anti-corrosion steel pipe, is an anti-corrosion method that coats the inner and outer walls of the steel pipe with fused epoxy powder. This kind of anti-corrosion steel pipe has been widely used in pipeline engineering at home and abroad because of its excellent anti-corrosion performance and long service life.
The following are some key features and process flows of FBE anti-corrosion steel pipes:
Good corrosion resistance: FBE coating has strong adhesion to steel, good coating integrity, and can effectively prevent the penetration of corrosive media.
Resistance to cathodic peeling: FBE coating can withstand the electrochemical environment generated by cathodic protection and prevent coating peeling.
Resistant to soil stress and abrasion: The coating has a certain mechanical strength and is able to resist soil stress and external abrasion.
Simple and pollution-free coating: FBE coating adopts electrostatic spraying process, which is easy to operate and pollution-free.
High temperature resistance: FBE coating is suitable for a wide temperature range and has good temperature resistance.
Process flow:
1. Steel pipe preheating: Preheat the steel pipe through an intermediate frequency heating device to remove oil, water, moisture, etc.
2. Shot blasting and rust removal: Use a centrifugal shot blasting machine to spray the surface of the steel pipe at high speed to remove the rust layer and surface dust to reach the Sa2.5 level rust removal standard.
3. Electrostatic spraying: The epoxy powder coating is sprayed on the surface of the preheated steel pipe using the electrostatic spraying process to form a coating.
4. Solidification: The epoxy powder melts and bonds on the surface of the steel pipe, and then solidifies to form a coating.
Application scope:
FBE anti-corrosion steel pipe is suitable for external anti-corrosion of steel buried pipelines or underwater pipeline facilities with an operating temperature of -30 to 100 degrees Celsius. Commonly used in petroleum, natural gas, chemical industry, coal mines, water supply and drainage and other engineering fields.
Standards: The production and application of FBE coatings follow certain standards, such as SY/T0315-2013, CAN/CSA-Z245.20, DIN30671, etc.
Construction steps: including steel pipe pre-treatment, preheating, shot blasting, electrostatic spraying of FBE powder, curing and online testing.
Environmentally friendly features: Powder coating is 100% solid powder, does not contain solvents, saves energy and resources, and reduces environmental pollution.
Market application: FBE anti-corrosion steel pipes are widely favored and welcomed by the market because of their excellent adhesion, flexibility and corrosion resistance.
In summary, FBE anti-corrosion steel pipes have been widely used in the field of pipeline anti-corrosion due to their excellent anti-corrosion performance and environmental protection characteristics.
Single layer fused epoxy powder coating technical indicators | |||
No. | Test items | Index | Test Methods |
1 | Appearance | Smooth, uniform color, no bubbles, no cracks | Visual inspection |
2 | Thermal properties | Comply with the characteristics given by the powder manufacturer | Appendix B |
3 | 28d Resistant to cathodic stripping,㎜ | ≤8.5 | Appendix C |
4 | 24h/48h Resistant to cathodic stripping,㎜ | ≤6.5 | Appendix C |
5 | Porosity grade of bonded surface | 1~4 | Appendix D |
6 | The porosity grade of the section | 1~4 | Appendix D |
7 | The minimum test temperature specified in the order is ±3℃ | No cracks | Appendix E |
8 | Resistance to 1.5J impact(-30℃) | No leaks | Appendix F |
9 | 24 hours adhesion | 1~3 | Appendix G |
10 | Resistance to cathodic peeling of coating 28d after bending | No cracks | Appendix H |
11 | Electrical strength,MV/m | ≥30 | GB/T1408.1 |
12 | Volume resistivity,Ω.m | ≥1×1013 | GB/T1410 |
13 | Chemical resistance | qualified | Appendix I |
14 | Wear resistance (falling sand method),L/μm | ≥3 | Appendix J |
Quality requirements for double-layer sintered epoxy powder coating | ||
Test items | Index | Test Methods |
Thermal properties | conform to given characteristics | SY/T0315—97 Appendix B |
24h/48h Resistant to cathodic stripping | ≤6㎜ | SY/T0315—97 Appendix C |
28d Resistant to cathodic stripping | ≤8㎜ | SY/T0315—97 Appendix C |
The porosity of the bottom section | Level 1~Level 4 | SY/T0315—97 Appendix E |
Porosity of the underlying bonding surface | Level 1~Level 4 | SY/T0315—97 Appendix E |
24h or 48h adhesion | Level 1~Level 2 | SY/T0315—97 Appendix H |
0℃ or -30℃ | No cracks | Appendix D |
Select the test temperature according to the engineering requirements | ||
Resistant to 10J impact | No pinholes | Appendix E |
30kg scratch resistance | Scratch depth ≤350μm, no leakage points | Appendix F |
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