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Epoxy Anti-Corrosion Powder Coating for Safe Drinking Water Pipes

MOQ 100KG, From China, B2B only WhatsApp
Brand STD
OEM OEM Services Provided
Advantage Professional, Fast Delivery, Customizable
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Surface Finish Options Overview

Product Introduction:

This product is formulated using special epoxy resin, dedicated curing agents, nano-grade antimicrobial agents, and food-grade pigments and fillers. It features high reactivity, strong adhesion, high cross-link density, and excellent resistance to chemicals, solvents, cathodic disbondment, as well as superior and durable antimicrobial effects, flexibility, and impact resistance.

Product Usage:

Suitable for municipal drinking water supply pipes.

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.
  8. The product has passed the EU WRAS water safety certification and meets the safety evaluation standards for materials in contact with drinking water.

Powder Performance:

Property Specification Notes
Mechanical Strength High Ensures durability and resistance to mechanical stress
Shrinkage Low Minimizes dimensional changes during curing, maintaining precision
Processing Performance Excellent dispersibility and lubricity Facilitates smooth molding and reduces wear on molds
Electrical Properties High glass transition temperature, wide operating temperature range Ensures stable performance across a broad temperature spectrum
Dielectric Properties Excellent chemical and solvent resistance Protects against degradation from chemical exposure
Environmental Performance 100% solid content, no harmful substances Complies with environmental regulations and promotes sustainability

Curing Conditions:

Property Specification Notes
Temperature Referenced to workpiece temperature Deviations may affect performance; ensure accurate temperature control for optimal results

Application Parameters:

Parameter Specification Notes
Applicable Equipment Frictional charging spray, corona electrostatic spray, dip coating, roll coating  
Film Thickness 200-600um Adjustable according to workpiece requirements

Health and Safety:

Property Specification Notes
Toxicity Non-toxic Safe for handling and application
Flammability Non-flammable Reduces risk in storage and use
Regulation GB15607-1995 Follow safety protocols for coating operations

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 Ensures product stability and prevents degradation
Curing Temperature Preheat steel pipe surface to above 200°C for better curing completion rate  
Mixing Powders Do not mix with other anti-corrosion powders or recycled powders. Thoroughly clean the spraying equipment when changing colors to ensure drinking water safety and meet EU WRAS water safety standards  
Compliance Meets EU WRAS water safety standards

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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