Steel-in-steel steam insulated pipe is used for thermal insulation and cold insulation of various indoor and outdoor pipelines, district-heating pipelines, central air-conditioning pipelines, and chemical and pharmaceutical industrial pipelines. Since the advent of PU synthetic materials in the 1930s, PU foam insulated pipe has been rapidly developed as an excellent thermal insulation material, and its range of application has become ever wider. Because it is simple to install and offers marked energy-saving and anti-corrosion effects, it is widely used on heating, refrigeration, oil-transmission, and steam-transmission pipelines.

　　Main Components of Steel-in-Steel Steam Insulated Pipe:

　　I. Protective jacket: HDPE or FRP.

　　II. Insulation layer: rigid PU foam.

　　III. Carrier pipe: according to the technical requirements of the conveyed medium, seamed steel pipe, seamless steel pipe, or double-sided submerged-arc spiral-welded steel pipe is used.

　　IV. Leakage alarm wire: When manufacturing high-temperature prefabricated direct-buried insulated pipes, an alarm wire is embedded in the insulation layer close to the steel pipe. Once leakage occurs somewhere in the pipeline, the signal is transmitted through the alarm wire, and a dedicated detection instrument will alarm and display the exact location and severity of the leak.

　　That concludes the introduction to steel-in-steel steam insulated pipe. We hope it is helpful. For more information, please follow us. Black-Jacketed Direct-Buried LSAW Pipe