Product Overview

Prefabricated insulated ductile iron pipes for urban heating are a new product independently developed by Tiegu Company. These pipes combine the mechanical strength and durability of ductile iron with prefabricated thermal insulation, providing reliable performance in district heating systems.

• Service life exceeds 30 years under continuous operation at 120 °C.

• Service life exceeds 50 years under continuous operation not exceeding 115 °C.

Compared with traditional welded steel pipes used in thermal applications, these ductile iron pipes offer longer service life, higher safety, simpler and faster installation, and lower overall cost.

Key Features

• Long service life – over 30 years at 120 °C and over 50 years at ≤115 °C.

• High safety performance – withstands high temperatures and operational stress.

• Prefabricated insulation – reduces heat loss and ensures energy efficiency.

• Durable ductile iron body – excellent mechanical strength and corrosion resistance.

• Simple and fast installation – prefabricated design enables quick deployment.

• Low overall cost – long-term savings in maintenance, energy, and replacement.

Typical Applications

• Urban district heating systems

• Thermal energy transport pipelines

• Industrial heating networks

• Energy-saving projects in municipal infrastructure

• Replacement of traditional welded steel thermal pipelines

Why Choose Prefabricated Insulated Ductile Iron Pipes?

These prefabricated insulated ductile iron pipes combine the durability and strength of ductile iron with advanced thermal insulation, providing reliable, long-lasting performance in high-temperature applications. Compared to welded steel pipes, they are safer, easier to install, and offer lower total cost over their service life, making them ideal for modern urban heating and industrial thermal networks.