Pipeline Powder Coating is a heavy-duty functional powder coating system designed to enhance the durability, corrosion resistance, and long-term performance of pipelines and valves. You use this coating to protect piping systems from corrosion, abrasion, and extreme environmental conditions, while improving service life and reducing maintenance costs. Formulated primarily with epoxy resin and fluoropolymer resin as key binders and curing components, this coating delivers reliable protection for industrial and outdoor pipeline applications through a solvent-free, environmentally responsible process.
Oil and gas transmission pipelines
Industrial process pipelines
Water supply and drainage pipelines
Chemical and petrochemical piping systems
Valves, fittings, and pipe joints
Typical tested products include steel pipes, welded pipe sections, and valve components evaluated under corrosion exposure, mechanical stress, and environmental aging conditions.
(1) ISO 2409 – Paints and varnishes: Cross-cut adhesion test
(2) ISO 21809 – Petroleum and natural gas industries: External coatings for buried or submerged pipelines
(3) ISO 9227 – Corrosion tests in artificial atmospheres (salt spray)
(4) ISO 6272 – Paints and varnishes: Impact resistance
(5) ISO 15184 – Paints and varnishes: Pencil hardness test
(6) ISO 12944 – Corrosion protection of steel structures by protective paint systems
(7) ASTM G154 – UV exposure of nonmetallic materials
(8) ASTM G8 – Cathodic disbondment testing of pipeline coatings
| Performance Item | Test Standard | Technical Specification |
|---|---|---|
| Appearance | Visual inspection | Uniform, continuous coating film |
| Adhesion | ISO 2409 | Refer to specific product grade |
| Impact Resistance | ISO 6272 | Refer to service requirement |
| Cathodic Disbondment | ASTM G8 | Delayed disbondment performance |
| Thermal Expansion | Internal control method | Low thermal expansion rate |
| Solvent Resistance | Internal method | No coating degradation |
| Weather Resistance | ASTM G154 | Refer to epoxy or fluoropolymer type |
You achieve excellent adhesion to steel pipe and valve substrates
You benefit from strong corrosion protection and long-term barrier performance
You obtain low thermal expansion, supporting dimensional stability
You reduce coating defects through anti-sagging and self-healing behavior
You are not restricted by residual thickness limitations during application
You delay cathodic disbondment in cathodically protected pipeline systems
You gain resistance to solvents, scratches, and mechanical damage
You select epoxy or fluoropolymer systems for different service environments
You access customizable rough surface textures and multiple color options
You receive the product in sealed, moisture-resistant industrial packaging designed to maintain powder stability during transportation and storage. Packaging formats are suitable for pipeline coating lines, valve coating operations, and heavy-duty industrial applications.
1. What is the main purpose of pipeline powder coating?
You use pipeline powder coating to protect pipes and valves from corrosion, mechanical damage, and environmental exposure, extending service life.
2. What coating systems are available in this series?
You can choose epoxy-based systems for strong corrosion resistance or fluoropolymer-based systems for enhanced weather resistance.
3. Is this coating suitable for buried or submerged pipelines?
Yes. When properly specified and applied, this coating is suitable for buried or submerged pipeline protection systems.
4. How does this coating perform under cathodic protection?
You benefit from delayed cathodic disbondment performance, helping maintain coating integrity in cathodically protected pipelines.
5. Can this coating be applied to valves and fittings?
Yes. You can apply this coating to valves, fittings, and complex pipe components requiring heavy-duty protection.
6. Are surface texture and color customizable?
Yes. You can customize surface roughness and color according to application, identification, or installation requirements.
7. Is pipeline powder coating environmentally friendly?
Yes. You use a solvent-free powder coating process that reduces emissions and supports sustainable industrial practices.
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 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.
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 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.
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.
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.
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.
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.
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.
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.
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.
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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