1. Product Overview

This product is carefully formulated using epoxy resin and functional curing agents. It features high reaction activity, excellent adhesion, and high cross-linking density. The cured coating film exhibits outstanding properties, including excellent chemical resistance, solvent resistance, cathodic disbondment resistance, flexibility, and impact resistance, providing long-term and reliable corrosion protection for external pipeline surfaces.

2. Product Features

(1) Excellent bonding strength with the substrate.

(2) Excellent leveling performance and high gloss of the coating surface.

(3) Outstanding resistance to penetration and excellent corrosion protection performance.

(4) High surface hardness and dense coating structure, providing excellent resistance against penetration by plant roots and stems.

(5) The coating provides excellent antibacterial protection and resistance against root penetration.

(6) Low melting temperature, high reaction activity, high curing completion rate, and excellent overall coating performance.

3. Powder Coating Performance Parameters

Item	Quality Requirements	Test Method
Appearance	Uniform color, no agglomeration	Visual inspection
Color	According to customer requirements	—
Density (g/cm³)	1.3–1.5	GB/T 4472
Particle Size Distribution (%)	Powder retained on 150 μm sieve ≤3	GB/T 6554-1986
	Powder retained on 250 μm sieve ≤0.2	GB/T 6554-1986
Non-volatile Content (%)	>99.4	GB/T 6554-1986
Softening Time (s)	≤100 s (180°C)	GB/T 6554-1986
	≤60 s (200°C)	GB/T 6554-1986
	≤30 s (230°C)	GB/T 6554-1986
Magnetic Material Content (%)	≤0.002	JB/T 6570

4. Performance Parameters of Cured Powder Coating Film

No.	Test Item	Technical Requirements	Test Method
1	Appearance	Smooth surface, uniform color, no bubbles, no adhesion defects or wipe marks; slight orange peel is acceptable	Visual inspection
2	Adhesion (Grade)	1–3	SY/T 0315-2005
3	Cathodic Disbondment Resistance (24 h) (mm)	≤6.5	SY/T 0315-2005
4	Cathodic Disbondment Resistance (28 days) (mm)	≤8.5	SY/T 0315-2005
5	Cross-section Porosity Rating	1–4	SY/T 0315-2005
6	Bond Interface Porosity Rating	1–4	SY/T 0315-2005
7	Flexural Resistance (3°)	No cracks	SY/T 0315-2005
8	Volume Resistivity	>1×10¹³ Ω·m	GB/T 1410
9	Dielectric Strength (MV/m)	>30	GB/T 1408.1
10	Impact Resistance (1.5 J, -30°C)	No leakage points	SY/T 0315-2005
11	Chemical Corrosion Resistance	Qualified	SY/T 0315-2005
12	Abrasion Resistance (Sand Drop Method)	>3 L/μm	SY/T 0315-2005
13	Salt Spray Resistance (1000 h)	No change in coating film	GB/T 1771-1991

Applicable Standard: SY/T 0315-2005

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 180–230°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 ensure the packaging remains sealed to prevent powder caking and moisture absorption, which may affect fluidization performance.

6. Applicable Application Process

Suitable for:

Electrostatic spraying

7. Application Areas

Widely used for external anticorrosion protection of pipelines in industries including:

• Municipal engineering pipelines
• Water supply pipelines
• Drainage pipelines
• Sewage pipelines
• Circulating water pipelines
• Chemical industry pipelines
• Thermal power plant pipelines
• Other fluid transportation pipeline systems.