Dual Layer Epoxy Anti Corrosion Powder Coating - China

Product Introduction:

This dual-layer epoxy powder coating is formulated using multiple types of epoxy resins and functional curing agents.

The base layer, like other epoxy anti-corrosion coatings, offers excellent corrosion resistance.

The outer layer not only maintains corrosion protection but also enhances the protective properties, making it suitable for highly demanding anti-corrosion environments, especially for pipelines crossing mountainous areas, rivers, and hilly regions.

Product Features:

Excellent adhesion between the base layer and the substrate, as well as between the epoxy layers.

Strong resistance to permeation and corrosion.

The outer layer has high hardness and density, is scratch-resistant, and provides good resistance to plant root penetration.

The coating has excellent resistance to high-temperature cathodic disbondment.

Powder Coating Performance Parameters

Item Quality Indicator Test Method

Appearance Uniform color, no lumps Visual inspection

Volatile Content (%) ≤ 0.6 Q/CNPC 38-2002 Appendix B

Curing Time (230°C) (min) ≤ 3 SY/T 0315-2005

Magnetic Substance Content (%) ≤ 0.002 GB/T 6570

Cured Powder Coating Performance Parameters

No.

Test Item Technical Indicator Test Method

1 Appearance Smooth, uniform color, no bubbles, cracks; slight orange peel allowed Visual inspection

2 Adhesion (Grade) (24h or 48h) 1-2 SY/T 0315-2005

3 Cathodic Disbondment Resistance (24h or 48h) (mm) ≤ 6 SY/T 0315-2005 Cathodic Disbondment Resistance (28d) (mm) ≤ 8 SY/T 0315-2005 Cross-Section Porosity of Base Layer 1-4 SY/T 0315-2005 Bonding Surface Porosity of Base Layer 1-4 SY/T 0315-2005

4 Flexibility (2°) (0° or -30°) (Ordinary Grade) No cracks Q/CNPC 38-2002 Appendix D Flexibility (1.5°) (0° or -30°) (Enhanced Grade) No cracks Q/CNPC 38-2002 Appendix D Impact Resistance (10J) (Ordinary Grade) No pinholes Q/CNPC 38-2002 Appendix E Impact Resistance (15J) (Enhanced Grade) No pinholes Q/CNPC 38-2002 Appendix E Scratch Resistance (30Kg) (Ordinary Grade) Scratch depth ≤ 350 µm, no leakage Q/CNPC 38-2002 Appendix F

8 Scratch Resistance (50Kg) (Enhanced Grade) Scratch depth ≤ 500 µm, no leakage Q/CNPC 38-2002 Appendix F

Compliance Standard:

Q/CNPC 38-2002 Application Fields:

Complex anti-corrosion environments, especially pipelines crossing mountainous areas, rivers, and hilly regions.

Application Process:

Electrostatic spraying.

Precautions:

The steel pipe surface should be free of oil and moisture; the surface treatment quality should reach Sa2 1/2 level (GB/T 8923); the anchor pattern depth should be 50-90 mm; dust and abrasives on the steel pipe surface should be blown clean.

The product should be stored in a well-ventilated, dry indoor environment with a temperature below 30°C, away from heat sources, corrosive chemicals, and chemical solvents, and protected from strong light exposure; the stacking height should not exceed four layers; avoid long-term pressure, ensure the packaging box is sealed to prevent caking and moisture, which can affect fluidization performance.

Company Contact:

• Posted By: Standard International Group (HK) Limited

• Phone: +86-21-64208466-808

• Address: Floor 2, #47 Building, 280 Jiugan Road, Songjiang district, Shanghai, China, Shanghai , Shanghai , China

• Email:

• Website: https://moutainchem.com/

• Business Description: Standard International Group (HK) Limited was founded in 2003 - Over years, Standard Group has established long-term strategic cooperative relations with many well-known industrial chemical manufacturers, such as Sherwin-Williams, LANXESS, Evonik, Covestro, Elementis and so on, thus ensuring that customers can receive consistent high-quality services.
  
  Years of professional accumulation make us not only provide high-quality industrial coating additives, but also medicine Pharmaceutical Intermediates and electronic chemistry.
  
  From the painting plant laboratory first sample testing, middle-testing and final-testing, we adhere to the professional, sincere, enthusiastic and efficient service concept, our technical team always adjust the sample during different testing process until it performs perfect chemical reaction at customer’s paints.