Steel sleeve steel steam buried insulation pipe

Steel sleeve steel steam buried insulation pipe is a high-performance piping system specially designed for underground steam transmission applications. This prefabricated, insulated pipe features a double-layer steel structure with advanced thermal insulation, making it ideal for district heating systems, industrial steam networks, and thermal power plants.

Structure & Composition

1. Inner Steel Pipe (Working Pipe)

Material: High-quality carbon steel or alloy steel

Function: Transports high-temperature steam (typically 150°C-350°C)

Pressure Rating: Customizable (typically 1.6MPa-4.0MPa)

2. Insulation Layer

Material: Ultra-high-temperature resistant materials such as microporous calcium silicate or aerogel

Function: Minimizes heat loss and maintains steam temperature

Thickness: Adjustable based on temperature requirements

3. Outer Steel Protective Sleeve

Material: Anti-corrosion treated steel pipe (3PE coated or galvanized)

Function: Provides mechanical protection and waterproofing

Corrosion Resistance: Designed for 30+ years underground service

4. Leak Detection System (Optional)

Integrated alarm wires for early detection of insulation failure

Key Features & Advantages

✔ High-Temperature Resistance - Suitable for steam up to 350°C
✔ Superior Insulation - Ultra-low thermal conductivity minimizes energy loss
✔ Double Protection - Inner and outer steel layers ensure structural integrity
✔ Corrosion Resistant - Advanced coating systems for long underground life
✔ Prefabricated Design - Ensures quality and speeds up installation
✔ Low Maintenance - Virtually maintenance-free once installed

Applications

District heating steam networks

Industrial plant steam distribution

Thermal power plant steam transmission

Petrochemical high-temperature pipelines

Installation Method

Direct Burial Installation - Laid in trenches with proper bedding materials

Compensated Design - Accommodates thermal expansion/contraction

Waterproof Treatment - Special joint sealing for complete moisture protection