Double-wall pipe forming machines with insulation material injection

TTEngineering offers advanced solutions for the production of double-wall pipes featuring high-performance thermal insulation, specifically designed for chimney systems, ventilation ducts, and industrial exhaust applications. These pipes are engineered to enhance energy efficiency, ensure safe external temperatures, and comply with the most demanding performance and safety standards.

The system is centered around two complementary machines: the DPL and DPI. TTEngineering provides manufacturers with the ability to grind thermal insulation materials, such as ceramic wool or mineral rock wool, into a fine, uniform flock, which is then injected into the interspace between the inner and outer pipes using a high-pressure injection system. This process ensures even material distribution throughout the pipe and guarantees consistent thermal performance across the product range.

Once insulation is in place, the internal and external pipes are assembled using TTEngineering’s DPC and DPFC machines. For sealing the interspace, two configurations are available.

The first is a flexible metal ring, designed and patented by TTEngineering, which seals the pipe ends while minimizing heat transfer between the inner and outer layers. Its unique profile compensates for thermal expansion and length variations, ensuring mechanical stability over time; this solution requires the use of a DPT shearing machine for proper installation.

The second option is a rigid ring made of insulating material, typically formed from rock wool, which provides excellent thermal isolation and a consistent external appearance. This version requires a grinder and the injection unit for precise positioning during assembly.

This complete system enables the production of safe, high-quality, and thermally optimized double-wall pipes in an automated and controlled environment. Leveraging its expertise in forming and insulation technologies, TTEngineering supports manufacturers in meeting the growing demands of energy efficiency, fire resistance, and long-term durability across the HVAC and industrial sectors.

For more information, please contact TTEngineering through the references available on its online booth.

Acoustic silencers for power generators

Acoustic silencers for power generators represent a specialized application of TTEngineering’s double-wall pipe technology. In these systems, the pipes are not only thermally insulated, but also acoustically treated through the injection of flocked insulation material, which effectively reduces both noise and heat transmission in exhaust and flue gas lines.

This solution is particularly suited for generator set installations, where minimizing acoustic emissions and ensuring safe external temperatures are critical for compliance with noise regulations, safety standards, and operational comfort, especially in urban or sensitive environments. By combining advanced forming systems, high-pressure insulation injection, and patented sealing solutions, TTEngineering enables manufacturers to produce high-efficiency acoustic silencers tailored for power generation, industrial exhaust, and energy systems. These silencers contribute to noise attenuation, thermal control, and mechanical durability, while supporting automated, scalable production processes.

With its complete range of double-wall pipe forming and insulation solutions, TTEngineering empowers producers to deliver reliable, high-performance silencers for power generators, chimney systems, HVAC, and ventilation networks. Every system is engineered to maximize thermal-acoustic efficiency, minimize downtime, and ensure long-term product reliability.

For more information, please contact TTEngineering through the references available on its online booth.