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[China]
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Address: 16th Yufeng Road, HuaDu District , Guangzhou,China
Contact name:Yarly ，Carolyn
Kinte Materials Science and Technology Co.,Ltd |
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Thermosetting Anti-corrosion Powder Coating, Epoxy Resin Powder Coating for Pipeline, Oil Drill Pipes
◎Introduction
KT-621HH is a thermosetting epoxy powder coating, which is a special anti-corrosion powder coating specially designed for pipeline corrosion used in high-temperature environments. The product has excellent corrosion resistance and high-temperature resistance and is suitable for anti-corrosion of the inner wall of oil drill pipes, tubing, and casing, as well as pipelines under harsh corrosive conditions.
This product meets the technical requirements of the standard SY/T0544-2016 "Technical Conditions for Internal Coating of Oil Drill Pipes" and SY/T6717-2016 "Technical Conditions for Internal Coating of Tubing and Casing"
◎Product Features
Excellent corrosion resistance
Excellent high-temperature resistance
Specially designed for pipeline corrosion used in high-temperature environments.
Suitable for anti-corrosion of the inner wall of oil drill pipes, tubing, and casing, as well as pipelines under harsh corrosive conditions.
◎Powder Properties
| NO. | Items | Acceptance Criteria | Test Standard |
| 1 | Apperance | Uniform color, no lumps | Visual inspection |
| 2 | Color | Colorful powder | Visual inspection |
| 3 | Thermal Properties | Tg2＞150℃ | DSC |
| ΔH=90±10J/g | |||
| 4 | Density | 1.45-1.55 g/cm3 | GB/T4472 |
◎Film Properties
| NO. | Items | Acceptance Criteria | Test Standard | |
| 1 | Apperance | Flat and uniform, no bubbles, no shrinkage holes | Visual inspection | |
| 2 | Cure Degree | -1.5℃＜ΔTg＜3℃ | ISO21809-2 | |
| 3 | Porosity | Section porosity 1-2 | NACE RP0394 | |
| Bonding surface porosity 1-2 | ||||
| 4 | Adhesion | Grade A | SY/T0544-2016 Appendix A | |
| 5 | Film Thickness | 250-500μm | SY/T0544-2016 Appendix B | |
| 6 | High Temperature and High Pressure Resistance | Liquid phase: water, toluene and kerosene (mixed in equal volume ratio), temperature 107°C, pressure 35MPa, time 16h, 2/3 of the test piece is immersed in the liquid, pressurized with gas CO2, the coating has no bubbles and no adhesion after the test downgrade | SY/T0544-2016 Appendix C | |
| Liquid phase: NaOH solution, PH value 12.5, temperature 148℃, pressure 70MPa, time 24h, the test piece completely entered the liquid, pressurized with gas N2, the coating had no bubbles after the test, and the adhesion did not degrade | ||||
| 7 | Film Acid Resistance | 15%HCl, 3%HF, 66℃, 18h | No change in film | Immersion |
| 12%HCl, 3%HF, 93℃, 8h | ||||
| 28%HCl, 66℃, 8h | ||||
| 8 | Bending Resistance | 2.5° Visually no cracks | SY/T0544-2016 Appendix D | |
Note:
1. All data in sheet 1 and sheet 2 are based on laboratory tests and practical experience.
2. It is recommended that the product should pass the process evaluation before batch use to avoid unnecessary losses to customers due to various reasons such as process.
◎Pipe Film Operation Process
1) Remove oil, rust and other loose deposits, moisture, etc. on the surface.
2) Sand blasting or shot blasting to Sa2.5 level, anchor pattern depth 60 ⁓100μm, dust removal on the surface to near white level, pay attention to adding new and old sand evenly to make the ratio stable.
3) Thoroughly clean the surface of the pipe.
4) Special primer is required for spraying, and the spraying thickness should be below 25μm. Note that the thickness of the primer should not overwhelm the depth of the anchor pattern.
5) Preheating, put the pipes sprayed with primer into the heating furnace for preheating, generally controlled at 175 ⁓190℃.
6) Coat the powder coating on the inner surface of the pipe with a thickness of more than 200μm.
7) Put the coated pipe into the heating furnace and cure at 200±10℃ for 80±5min to make the coating reach the best state.
8) Test the coating performance after the coating is naturally cooled.
◎Storage
1. The product should be stored in a cool, ventilated, dry room with a temperature below 25°C and a humidity below 60%.
2. Keep away from fire and heat insulation.
3. The package can be opened at any time, and it should be sealed in time after use to prevent the powder from being polluted and damp.
4. Minimize the number of movements and avoid impact and pressure.
5. The stable storage period is 12 months.
Note: Improper storage conditions can easily cause the epoxy powder product to deteriorate, agglomerate and become unusable.
◎Package and Transportation
This product is a non-hazardous item. Packed in carton, 25kg per carton, the carton is lined with polyethylene plastic bag. During the shipping process, it should be lightly loaded, lightly unloaded and protected from direct sunlight, heat and moisture.
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