Steel clad steel steam-insulated pipeline market application rangeWith the vigorous development of urban centralized heating and combined heat and power generation, the technology of thermal pipeline has been widely applied domestically. The buried laying method, due to its excellent insulation effect, high energy-saving efficiency, minimal land use without affecting urban planning, ease of installation, short construction period, long service life, and low maintenance costs, has been universally favored upon its introduction. The types of outer protective sleeves for buried steam pipes commonly used in China are "plastic jacket steel" and "steel jacket steel." The technical route for steel jacket steel burial is based on the traditional trench laying, replacing brick or concrete trenches with steel sleeves. The sliding interface of the pipeline is the interface between the pipeline support and the inner wall of the steel sleeve. Buried steam pipes; buried; externally fixed; internally fixed. In recent years, there have been many attempts to use buried steam pipes in northern cities. When steam pipes cross urban main roads and involve issues of environmental beautification, the buried laying method can effectively solve these problems. Moreover, due to its fast construction progress, good insulation performance, low construction cost, and material savings, it has been increasingly widely used. As steam buried pipes are a new phenomenon, the construction department has not yet formulated formal standards for detailed provisions on steam buried pipes.

Several characteristics of steel clad steel thermal insulation pipes from manufacturers, such as direct-burial steam pipelines, have gained increasing popularity in the heating industry as a new material due to their fast construction progress, excellent insulation performance, low construction cost, and material savings. Since there is no design specification for high-temperature steam pipelines, the insulation structures and fixing methods vary among different manufacturers. This article discusses several common characteristics of direct-burial steam pipelines available in the market.