The pipeline anti-corrosion and thermal insulation layer consists of an anti-corrosion layer, a thermal insulation layer and an outer shell layer.
The anti-corrosion coating of a pipeline refers to a layer of special anti-corrosion material applied to the surface of the pipeline to protect the pipeline from erosion by external media. There are many types of anti-corrosion coatings; commonly used ones include paint, asphalt, polyurethane, epoxy, etc.
Different types of anti-corrosion materials are selected according to the requirements of different media and usage environments.

The insulation layer is designed to prevent rapid heat dissipation from the pipe and avoid temperature loss. Insulation materials include polystyrene, silicate, and polyurethane.
Choosing appropriate insulation materials and reasonable insulation layer thickness is very important for saving energy and improving pipeline efficiency.

Outer shell
The outer shell is designed to enhance the pipe's aesthetics, strengthen its strength, and provide protection. Common shell materials include steel plates, aluminum plates, stainless steel plates, UPVC, etc.
The thickness of the outer shell and the materials used should meet the requirements of the use environment and have certain compressive resistance and toughness.

This layer, applied around the exterior of a pipeline to provide insulation and heat insulation, generally consists of the following components:
1. Anticorrosion Layer: Two coats of anti-rust paint are applied to the outer surface of the pipeline.
2. Thermal Insulation Layer: A layer of thermal insulation and heat-insulating material;
3. Moisture-Proof Layer: This layer prevents moisture from entering the thermal insulation layer. Typically, this layer is wrapped with felt and has asphalt mastic applied to the seams. This layer is typically used for cold pipes.
4. Protective Layer: This layer protects the thermal insulation layer from damage. Typically, this layer is made of glass cloth wrapped around the protective layer.
5. Coloring Layer: This layer is painted a specific color to distinguish the fluid within the pipeline.
The purpose of corrosion protection is to isolate the metal surface of the pipeline from the corrosive environment, extend the life of the pipeline, and prevent leakage; reduce the heat loss of the medium in the pipeline (such as steam, hot water), or reduce the external heat transfer to the low-temperature medium (such as chilled water); maintain the medium temperature to meet process requirements or prevent the medium from solidifying.

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