What Are Enamel Coated Pipes?

Enamel coated pipes are composite materials where an inorganic glass-like enamel layer is fused to a metal substrate by high-temperature sintering. The enamel coating is tightly bonded to the metal surface, providing both the mechanical strength of metal and the excellent corrosion resistance, acid and alkali resistance, and temperature shock resistance of the enamel.

Key Features of Enamel Coated Pipes:

• Outstanding acid and alkali corrosion resistance

• Exceptional wear resistance, extending equipment service life

• High resistance to temperature shocks and thermal cycling

• Smooth surface, reducing scaling and deposits

• Excellent electrical insulation properties

Applications of Enamel Coated Pipes in Power Plant Flue Gas Treatment Systems

In power plants, the flue gas generated from combustion contains high levels of SO₂, SO₃, HCl, and other corrosive gases. After desulfurization, the gas often carries acidic liquid droplets, leading to severe corrosion of traditional metal pipes. Wet desulfurization enamel coated pipes have become the ideal solution to this problem.

Key Application Areas:

• Flue Gas Desulfurization (FGD) Tower Internal Circulating Pipelines: Resistant to slurry corrosion and liquid droplet erosion

• Wet Flue Gas Heat Exchangers (GGH Systems): Efficiently recover flue gas waste heat while preventing acid dew point corrosion

• Desulfurization Slurry Spray Systems & Flue Gas Ducts: Improve system stability and reduce maintenance costs

• Denitrification System Pipelines: Withstand corrosion from various acidic components in the gas

By using enamel coated pipes, power plants can significantly extend the lifespan of their systems, reduce maintenance frequency, and save on operational costs.

Enamel Coated Pipe Air Preheaters (GGH Systems) — Dual Protection for Heat Recovery and Corrosion Resistance

To address the need for flue gas heat exchange after wet desulfurization, we offer high-performance enamel coated pipe air preheaters.
These products are specifically designed to recover waste heat from the flue gas before and after desulfurization, improving overall system efficiency while solving the corrosion problem caused by sulfuric acid dew point in traditional heat exchangers.

Core Advantages of Enamel Coated Pipe Air Preheaters:

• Strong resistance to low-temperature acid dew point corrosion

• Efficient heat exchange performance, enabling energy savings

• Excellent wear resistance and temperature shock resistance, suitable for complex operating environments

• Smooth surface reduces dust adhesion, lowering maintenance and cleaning costs

Our enamel coated pipe air preheaters are already in stable operation at several large power plant projects, receiving high praise from customers.

Why Choose High-Quality Enamel Coated Pipes for Your Flue Gas Treatment System?

As environmental protection standards continue to tighten, the selection of materials for flue gas treatment, wet desulfurization, and denitrification systems in power plants has become increasingly important. High-quality enamel coated pipes and enamel coated pipe air preheaters not only effectively cope with corrosive environments but also significantly improve the economic and operational efficiency of these systems.

We are committed to providing customers with high-performance, long-lasting, and low-maintenance enamel coated pipe solutions, helping power plants achieve green, efficient, and sustainable development.