Suitable for overhead low‑temperature hot‑water pipelines below 140°C. This product features the following advantages:
1. Smooth surface with neat and elegant appearance.
2. Low installation cost, less installation space required and fewer connection joints.
3. High strength and good rigidity.
4. Wide optional range of wall thickness.
5. Excellent corrosion resistance, applicable to highly corrosive environments such as strong acid and alkali fumes.
6. Custom‑designed and tailor‑made in various specifications according to customer requirements.
7. UV‑resistant; service life of more than 15 years for outdoor overhead application and up to 30 years for indoor application.
8. High degree of product standardization. All components are standardized‑manufactured, which saves raw materials, facilitates storage and shortens delivery lead‑time.
9. The duct adopts continuous spiral lock‑seam structure, featuring good tightness, firmness and anti‑corrosion performance.
Specifications & Models
Nominal outside diameter: DN15‑1600 mm
Execution Standard
Prefabricated Insulated Pipes for Overhead and Utility Tunnel, GB/T 45472‑2025
