Epoxy Anticorrosion Powder Coating for Fire Protection Steel Pipes
We are a manufacturer based in China. We specialize in providing high-quality Epoxy Anticorrosion Powder Coating for Fire Protection Steel Pipes for industrial clients across various sectors. Whether you need chemicals consultation or technical support, our team is here to help.
Category：Application industries, powder Coating Own Brand：MT /MOQ:100KG /From China/ B2B only.
Introduction
1. Product Overview
This product is formulated and manufactured using novolac epoxy resin, polyurethane-modified epoxy resin, and a new-generation curing agent, based on the latest formulation concepts.
It features high reaction activity, excellent bonding strength, high cross-linking density, and the cured coating film provides outstanding performance in chemical resistance, solvent resistance, cathodic disbondment resistance, flexibility, impact resistance, and high-temperature resistance, making it highly suitable for corrosion protection of fire protection steel pipes.
2. Product Features
(1) Excellent bonding strength with the substrate.
(2) Outstanding corrosion resistance.
(3) Excellent surface leveling, high gloss, and dense coating structure.
(4) Excellent resistance to high-temperature cathodic disbondment.
(5) Extremely high flexibility, capable of passing 4/5 flattening tests and post-bending tests without coating failure.
(6) Excellent resistance to both high and low temperatures.
(7) Strong resistance to hot water boiling and water immersion aging.
3. Powder Coating Performance Parameters
| Item | Quality Requirements | Test Method |
|---|---|---|
| Appearance | Uniform color, no agglomeration | Visual inspection |
| Density (g/cm³) | 1.3–1.7 | GB/T 4472 |
| Particle Size Distribution (%) | Powder retained on 150 μm sieve ≤3; powder retained on 250 μm sieve ≤0.2 | GB/T 6554-1986 |
| Volatile Content (%) | ≤0.6 | GB/T 6554 |
| Gel Time (s) | ≤50 seconds at 180°C; <30 seconds at 230°C | GB/T 6554-1986 |
| Curing Time (s) | <5 minutes at 180°C; <3 minutes at 230°C | SY/T 0315-2005 |
4. Performance Parameters of Cured Powder Coating Film
| No. | Test Item | Technical Requirements | Test Method |
|---|---|---|---|
| 1 | Appearance | Uniform color, no bubbles, cracks, or pinholes | Visual inspection |
| 2 | Adhesion (Grade) | 1–3 | CJ/T 120-2008 |
| 3 | Pinholes | No electric spark generation | GB/T 5135.20-2010 |
| 4 | Impact Resistance | No peeling or cracking | GB/T 5135.20-2010 |
| 5 | High Temperature Resistance (300°C / 1 h) | No coating peeling, blistering, cracking, delamination, or damage | GB/T 5135.20-2010 |
| 6 | Low Temperature Resistance | No coating peeling or damage; adhesion grade 1–3 | GB/T 5135.20-2010 |
| 7 | Pressure Cycling Resistance | No coating peeling or damage; adhesion grade 1–3 | GB/T 5135.20-2010 |
| 8 | Temperature Cycling Resistance | No coating peeling or damage; adhesion grade 1–3 | GB/T 5135.20-2010 |
| 9 | Hot Water Aging Resistance | No coating peeling or damage | GB/T 5135.20-2010 |
| 10 | Vacuum Resistance | No coating peeling | GB/T 5135.20-2010 |
| 11 | Bending Resistance | No coating peeling or cracking | GB/T 5135.20-2010 |
| 12 | Flattening Resistance | No coating peeling or cracking | GB/T 5135.20-2010 |
Applicable Standards:GB/T 5135.20-2010; CJ/T 120-2008
5. Precautions
(1) The steel pipe surface must be free from oil contamination and moisture. Surface preparation quality should reach Sa2½ grade (GB/T 8923). The recommended anchor profile depth is 50–90 μm. Dust and abrasive residues attached to the steel pipe surface must be completely removed by air blowing. The preheating temperature should be controlled at 180–240°C.
(2) The product should be stored indoors in a well-ventilated and dry environment at temperatures below 30°C, away from heat sources, corrosive chemicals, and chemical solvents. Avoid direct exposure to strong sunlight. The maximum stacking height should not exceed 4 layers. Avoid prolonged compression and keep packaging sealed to prevent powder caking and moisture absorption, which may affect fluidization performance.
(3) To ensure complete curing of the epoxy coating film and achieve optimal anticorrosion performance, it is recommended that the steel pipe surface temperature be preheated to above 200°C to improve the curing completion rate.
6. Applicable Application Processes
Suitable for:
- Spray coating
- Dip coating
- Other related coating processes
7. Application Areas
Used for internal and external anticorrosion coatings of fire protection water supply pipelines, including fire hydrant systems, sprinkler systems, and other fire protection piping networks.
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