Thermally insulated pipes with polyurethane foam in Spiro shell – the ideal solution for overhead lines
Pipes with thermal insulation made of polyurethane foam (PPU) in a metal “Spiro” shell are the optimal solution for laying above-ground heating mains, hot water supply and industrial engineering networks. Due to their high strength and resistance to atmospheric influences, they ensure effective operation even in difficult climatic conditions.
Construction of a PPU pipe in a Spiro shell:
- Inner steel pipe:
- Performs the function of transporting the coolant.
- Material: carbon or stainless steel.
- Working pressure: up to 2.5 MPa.
- Thermal insulation layer (foamed polyurethane – PPU):
- Thermal conductivity coefficient: 0.027–0.033 W/(m K).
- High density ensures minimal heat loss.
- The thickness of the insulation varies depending on the pipe diameter and technical requirements (from 30 to 70 mm).
- Outer Spiro shell:
- Made of galvanized or stainless steel.
- Provides reliable protection against weathering, mechanical damage and corrosion.
- The high rigidity of the structure allows pipes to be laid without additional protection.
Advantages of PPU pipes in Spiro sheath for above-ground laying:
- Weather resistance: the sheath protects the pipes from rain, snow, ultraviolet radiation and temperature changes.
- Strength and durability: rigid construction allows pipes to be used without additional support structures.
- Corrosion protection: galvanized or stainless Spiro shell significantly extends service life.
- Cost-effectiveness: reducing heat loss and minimizing maintenance costs.
- Easy installation: possibility of quick installation without significant excavation work.
Technical specifications:
- Pipe diameter: from 32 to 426 mm.
- Operating temperature of the coolant: up to +140°C (short-term up to +150°C).
- The thermal conductivity coefficient of polyurethane foam: 0.027–0.033 W/(m·K) is one of the lowest among thermal insulation materials.
- Maximum working pressure: depends on the type of conductor pipe (up to 2.5 MPa for steel pipes).
- Service life: 30–50 years.
- Heat loss: 40–60% less than in traditional solutions.
- Protective casing: Corrosion-resistant metal casing (Spiro) – for laying above ground.
- Insulation layer thickness: varies depending on the pipe diameter and technical requirements (from 30 to 70 mm).
- Waterproofing: the protective coating of pipes and pipeline parts reliably prevents moisture from penetrating the thermal insulation layer, extending the service life and efficiency of thermal insulation throughout its entire service life.
Areas of application:
- Aboveground heating mains.
- Central heating systems.
- Hot water supply.
- Industrial pipelines.
- Engineering networks in difficult climatic conditions.
Additional services:
- Individual calculation of insulation thickness.
- Production of shaped elements for any configurations.
- Delivery and installation of insulation systems.
