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Epoxy Anti-Corrosion Powder Coating for Pipeline Internal Coating

MOQ 100KG, From China, B2B only WhatsApp
Brand STD
OEM OEM Services Provided
Advantage Professional, Fast Delivery, Customizable
Samples Apply for free,Contact Export Director now ↓

Surface Finish Options Overview

Product Introduction:

This product is formulated using special epoxy resin and functional curing agents. It features high reactivity, strong adhesion, high cross-link density, and excellent resistance to chemicals, solvents, cathodic disbondment, as well as superior flexibility and impact resistance.

Product Usage:

Municipal, water supply, drainage, sewage, circulating water, chemical, and power plant pipelines.

Product Features:

  1. Excellent adhesion to the substrate.
  2. Good leveling and high gloss on the coating surface.
  3. Strong resistance to permeation and corrosion.
  4. High surface hardness and dense coating.
  5. Superior high-temperature cathodic disbondment resistance.
  6. Good mechanical properties and extremely strong flexibility.
  7. Low melting temperature, high reactivity, and high curing completion rate.

Powder Performance:

Property Specification Notes
Adhesion Excellent  
Leveling Good, high gloss  
Corrosion Resistance Superior  
Surface Hardness High  
Cathodic Disbondment Resistance Excellent at high temperatures  
Flexibility Extremely strong  
Temperature Resistance Good performance in high and low temperatures  

Curing Conditions:

Property Specification Notes
Temperature 200-230°C for 3-1.5 minutes (medium-frequency heating) Deviations may affect performance

Application Parameters:

Parameter Specification Notes
Applicable Equipment Frictional charging spray, corona electrostatic spray, dip coating, roll coating  
Film Thickness 150-450um Adjustable according to workpiece requirements

Health and Safety:

Property Specification Notes
Toxicity Non-toxic  
Flammability Non-flammable  
Regulation GB15607-1995 Coating operation safety regulations

Precautions:

Item Specification Notes
Outdoor Use Not recommended May cause fading and chalking
Surface Preparation Oil-free, water-free, surface treatment to Sa21/2 level (GB/T8923), anchor pattern depth 40-100um, clean surface from dust and abrasives  
Preheating Temperature controlled between 180-230°C  
Storage Ventilated, dry, below 30°C, away from heat sources, corrosive chemicals, and solvents, avoid strong light, maximum stack height 5 layers, avoid long-term pressure, keep packaging sealed  
Curing Temperature Preheat steel pipe surface to above 200°C for better curing completion rate  

Compliance Standards:

MT SY/T 0442-97 “Technical Standard for Internal Coating of Steel Pipelines with Fusion-Bonded Epoxy Powder”

Types of powder coating

Powder coatings can be categorized by resin system (epoxy, polyester, hybrid, polyurethane), appearance (smooth, texture, hammer, metallic, pearlescent), or performance level (anti-corrosion, heat-resistant, UV-resistant, architectural grade, automotive grade).

Powder coating colours and effects

Powder coatings offer thousands of colors in gloss, matte, satin, metallic, candy, texture, wrinkle, hammer tone, wood grain, fluorescent, and other custom effects. Special powders can create soft-touch, anti-scratch, anti-fingerprint, or anti-graffiti surfaces.

Powder coating process

The process generally includes surface pretreatment (degreasing, phosphating, chromating, sandblasting), drying, electrostatic spraying, curing in an oven, and cooling. A well-controlled pretreatment and curing process ensures strong adhesion and long service life.

Powder coating benefits

Powder coatings are environmentally friendly, solvent-free, and produce minimal waste. They offer excellent corrosion resistance, weather durability, mechanical strength, and uniform film appearance. The coating is tough, impact-resistant, scratch-resistant, and has a long lifespan.

Applications for Powder Coatings

Powder coatings are widely used in appliances, aluminum profiles, architectural components, automotive parts, bicycles, furniture, outdoor equipment, machinery, electrical cabinets, pipeline systems, and general industrial and consumer goods.

FAQ

What is Powder Coating?

Powder coating is a dry finishing technology where finely ground powder is electrostatically sprayed onto a metal or non-metal surface and then cured at high temperature. After curing, the powder melts into a continuous, durable, and decorative coating layer.

What does powder coating do?

Powder coating protects the substrate from corrosion, weathering, chemical attack, and mechanical wear. It also provides decorative appearance with rich colors, gloss levels, textures, and special effects.

Is powder coating better than paint?

In many industrial applications, powder coating outperforms liquid paint. It forms a thicker and tougher coating, resists corrosion and chemicals better, and does not contain VOCs. It also provides excellent consistency and cost-effective mass production.

Why is it called powder coating?

It is called powder coating because the coating material is a solid powder instead of a liquid paint. The coating is formed by melting and curing powder particles under heat.

What are the different types of powder coating?

Powder coatings include several families depending on resin chemistry:

• Epoxy powders

• Polyester powders

• Epoxy-polyester hybrid powders

• Polyurethane powders

• Acrylic powders

• Fluorocarbon (PVDF) powders

Each type has its own performance features such as corrosion resistance, UV resistance, chemical resistance, outdoor durability, or decorative properties.

Which material is used in powder coating?

Powder coatings are based on thermoset or thermoplastic resins combined with pigments, curing agents, fillers, additives, and in some cases metallic or effect particles. Common substrates include steel, aluminum, galvanized metal, MDF, and certain heat-resistant plastics.

How long will powder coating last?

The lifespan depends on powder type, film thickness, application method, pretreatment, and service environment. Indoor coatings can last more than 10–20 years. High-grade outdoor polyester or fluorocarbon powders can last 15–25 years or longer under UV exposure.

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