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Powder coatings for ships and oil pipelines
- Commodity name： Powder coatings for ships and oil pipelines
- Product Description
-
Product Features1. Excellent adhesion to the substrate, reaching level 1 adhesion.2. Excellent chemical resistance.3. Good mechanical properties, extremely strong flexibility, the coating remains intact after cutting and grooving.4. Good powder fluidity, large spraying area, effectively reducing dust pollution during spraying.5. Good film surface leveling, high gloss, high surface hardness, and high coating density.Epoxy Powder Performance Parameters
Item
Quality Index
Test Method
Test Results
Appearance
Uniform color, no agglomeration
Visual GB/T 1729-1979
Qualified
Density (g/cm³)
1.3-1.5
GB/T 4472
1.38±0.03
Non-volatile content (%)
≥99.5
GB/T 6554
99.90%
Spraying area
\
Film thickness 300μm
2.29-2.39m²/kg
Gelation time 200℃ (s)
≤120s
GB/T6554-2003
50±10s
Magnetic content (%)
≤0.002
GB/T6570-1986
0.001
Cured Powder Coating Performance ParametersSerial Number
Test Item
Detection Standard
Test Method
Test Results
1
Appearance
Smooth, continuous, no bubbles, no cracks or shrinkage holes GB1729
Visual Inspection
Qualified
2
Cathodic Disbondment Resistance
≤4mm
GB/T 25826-2010
SY/T0315-2005CQualified
3
Adhesion
Grade 1-3
GBT/5135.20-2010
Grade 1
4
Impact Resistance
No peeling or cracking of the coating
GBT/5135.20-2010
Qualified
5
Bending Resistance
No cracks in the coating
SY/T0442-2010
Qualified
6
Volume Resistivity (Ω.m)
≥1×1013
GB/T1410
2.6×1014
7
Dielectric Strength (MV/m)
≥30
GB/T1408
43.5
8
Salt Spray Test (1000h)
No blistering or cracking of the coating; corrosion around the grid ≤2mm
5% NaCl*35℃
GBT1771Qualified
9
Bonding Surface Porosity
Grade 1-4
SY/T0442-2010
Grade 1-2
10
Cross-section Porosity
Grade 1-3
SY/T0442-2010
Grade 1
11
High Temperature and High Pressure Resistance Test
No bubbles or peeling of the coating
SY/T0442-2010
Qualified
12
Chemical Resistance (90d)
10% HCL (room temperature)
No change in coating
GB/T1763-1979
Qualified
10% H2SO4 (room temperature)
3% NaCl (room temperature)
10% NaOH (room temperature)
Oilfield wastewater (80℃)
No change in coating
GB/T1773-1993
Qualified
Crude oil (80℃)
Gasoline (room temperature)
Diesel (room temperature)
Kerosene (room temperature)
13
Abrasion Resistance (1000g/1000r)
≤20
GB/T 1768-1979
6.0
14
10
Salt Spray Test (800h)
≤3mm
GB/T 25826-2010
Qualified
Applicable Process: Electrostatic spraying, dipping, rolling, etc.Precautions:1. The surface of the steel pipe should be free of oil stains, loose rust, and moisture; the surface treatment quality should reach Sa2 1/2 grade (GB/T8923); the anchor pattern depth should be 50-90mm; dust and abrasives attached to the surface of the steel pipe should be blown clean; preheating: the surface temperature of the steel pipe should be controlled at 160-200℃, not exceeding 230℃.2. Unused powder should be stored in a ventilated, dry room with a temperature below 40℃, away from heat sources, corrosive chemicals and chemical solvents, and avoid strong light irradiation; the maximum stacking height should not exceed 4 layers; avoid long-term pressure, ensure the packaging box is sealed to prevent agglomeration and moisture, affecting the coating performance.3. To maximize the anticorrosion effect of the epoxy coating, the coated steel pipes need to undergo secondary heat curing.
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Address: Qichun County, Huanggang City, Hubei Province, China
Li Shizhen Industrial Park, North Huan Road
Tel: 86-13801790539 (Mr. Luo)
Email: tedluo@163.com