Valves and pipes powder coating

Surface Finish Options Overview

Introduction

The main components are epoxy resin and curing agent.

Brief description

It is mainly composed of epoxy resin and curing agent.

Features

• Excellent mechanical properties (impact resistance, hardness, toughness, adhesion, etc.)
• Good coating surface effect
• Strong corrosion resistance
• Good insulation

Application areas

Mechanical and electrical equipment, safes, industrial equipment, pipelines, steel wires, chemical laboratory equipment and other anti-corrosion fields.

Product series

Standard curing type and low temperature curing type are available.

Can be made into various glosses and colors.

Can be made into hot melt epoxy.

Technical parameters

Powder performance

Specific gravity: 1.1~1.8g/cm³

Mechanical properties

Corrosion resistance

Note: The above parameters are laboratory data and are for reference only. The actual indicators are related to factors such as customer environment, equipment, materials, pretreatment, and spraying process.

Application conditions

Pretreatment: phosphating, chromating, sandblasting.

Coating: Suitable for corona electrostatic spraying, friction electrostatic spraying, electrostatic fluidized bed spraying, fluidized bed dipping

Curing conditions:

200℃ at 10 minutes

180℃ at 15 minutes

Can also be designed according to customer needs.

Drinking water product certification

British WRA5 standard.

US NSF61 standard.

German KTW/W270 standard.

Drinking water valve testing standards: BS/EN14901. ANSI/NSF61.

Packaging

Carton packaging, net weight 20kg/box.

Lined with double-layer polyethylene plastic bags.

Storage conditions

Store in a dry and ventilated room below 30℃.

Avoid direct sunlight.

Under this condition, the powder can be stably stored for 6 months.

Safety and health

• All raw materials of powder coatings do not contain toxic substances.
• No toxic gas is released during baking.
• Avoid inhalation of dust during use.
• Operators should wear dust masks.
• Minimize long-term contact between skin and powder.
• Paint attached to the skin can be washed with soap.

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.