Overhead galvanized iron sheet insulation pipe

Overhead galvanized iron sheet insulation pipes are designed for above-ground thermal piping systems, providing excellent heat retention and weather resistance. These pipes are widely used in industrial plants, district heating networks, and steam transportation where elevated installation is required.

Structure & Composition

1. Inner Steel Pipe (Working Pipe)

Material: Carbon steel (Q235B, 20#) or stainless steel for high-temperature/corrosive fluids.

Function: Carries hot water, steam, or other thermal media.

2. Insulation Layer

Materials:

Rock wool / Glass wool (for high-temperature resistance).

Polyurethane (PUR) foam (for better thermal efficiency).

Function: Minimizes heat loss and maintains fluid temperature.

3. Outer Galvanized Iron (GI) Sheet Jacket

Material: Galvanized steel sheet (0.5mm–1.2mm thickness).

Function:

Protects insulation from rain, UV rays, and mechanical damage.

Provides structural support for overhead installation.

Corrosion-resistant due to zinc coating.

4. Optional Features

Aluminum foil or vapor barrier (to prevent moisture ingress).

Support brackets & clamps (for secure overhead mounting).

Key Features & Advantages

✔ Weatherproof & Durable – GI sheet resists rust, rain, and UV degradation.
✔ High-Temperature Resistance – Suitable for steam (up to 350°C) and hot water (up to 150°C).
✔ Low Heat Loss – Effective insulation reduces energy waste.
✔ Easy Maintenance – Galvanized steel requires minimal upkeep.
✔ Strong & Rigid – Withstands wind loads and mechanical stress.
✔ Long Lifespan – 20–30 years with proper installation.

Applications

Industrial steam pipelines (power plants, refineries).

District heating overhead networks.

Chemical & petrochemical plants.

HVAC systems requiring elevated piping.

Installation Method

Supports & Brackets – Installed on steel frames or concrete pillars.

Expansion Joints – Accommodate thermal expansion in long pipelines.

Clamps & Fasteners – Securely fix the pipe to avoid vibration damage.

Conclusion

Overhead galvanized iron sheet insulation pipes are a robust, cost-effective solution for elevated thermal piping systems. Their weather resistance, mechanical strength, and thermal efficiency make them ideal for industrial and district heating applications.

Need specifications for a custom project? Contact us for details!