FIFFCO Pre-Insulated Pipes are high-performance thermal insulation piping solutions engineered for district heating, cooling, and industrial pipeline networks. Designed for durability, energy efficiency, and long service life, these prefabricated pipes integrate a working steel pipe, high-density polyurethane (PUR) insulation layer, and a robust external protection casing such as polyethylene (PE) or other protective materials. This multi-layer construction ensures excellent thermal retention, corrosion resistance, and reliable performance in demanding environments.
Manufactured in accordance with international standards and advanced production processes, FIFFCO pre-insulated pipes are ideal for direct burial installations, trench layouts, utility tunnels, and overhead systems. The pipes are engineered to handle medium temperatures typically up to 120 °C (with higher peak tolerance depending on configuration) and are widely used in district heating and cooling networks, HVAC systems, and energy infrastructure projects. Their adjustable insulation thickness and customizable dimensions allow precise heat-loss control and project-specific optimization.
With a wide production range and multiple structural configurations available, FIFFCO Pre-Insulated Pipes provide a reliable and cost-effective solution for modern thermal distribution systems. They ensure long-term operational stability, reduced energy loss, and simplified installation—making them a preferred choice for infrastructure developers, contractors, and industrial facilities worldwide.
GB/T34611-2017 Rigid polyurethane spray polyethylene winding prefabricated directly buried insulating pipes
One-step forming process is different from pipe-in-pipe forming process. The insulation pipe consists of working external steel pipe (PBE anti-corrosion layer), PUR thermal insulation layer and extruded PE protection layer
It is mainly used for directly burying pipelines and laying pipelines in trenches.
This product is applicable to pipe network systems whose conveying medium temperature is no greater than 120°C, sudden peak is no greater than 130°C and working pressure is no greater than 2.5Mpa. The PUR insulation pipe can work continuously for at least 30 years at a temperature of 120°C. This product can be widely used in anti-corrosion and insulation pipe projects in the heating, cooling and crude oil transportation fields.
GB/T29047-2021 Prefabricated directly buried insulating pipes and fittings with polyurethane foamed-plastics and high density polyethylene casing pipes
Prefabricated insulating composite plastic pipe with PE casing pipe is applicable to cooling and heating pipe network systems whose conveying medium temperature (long-term operating temperature) is no greater than 85°C and working pressure is no greater than 1.0Mpa. The working pipe includes polybutylene pipe (PB), II type heat-resistant polyethylene pipe (PE-RT II) and III type polyethylene pipe (PP-R), etc.
This product is applicable to anti-corrosion and insulation pipe projects in the heating, cooling and crude oil transportation fields for overhead, trench and utility tunnels whose conveying medium temperature is less than or equal to 150°C and nominal pressure is less than or equal to 2.5Mpa;
When the long-term operating temperature of conveying medium is greater than 120°C, the composite insulation structure should be adopted.
This product is applicable to pipe network systems whose conveying medium temperature is no greater than 120°C, sudden peak is no greater than 140°C and working pressure is no greater than 2.5Mpa.
