Steel-clad steel steam insulation pipes are widely used in the market, with applications expanding alongside the vigorous development of urban centralized heating and cogeneration. The technology for thermal pipelines has gained extensive adoption domestically. The direct-burying method, known for its excellent insulation effect, high energy-saving efficiency, minimal land use, non-impact on municipal planning, ease of installation, short construction period, long service life, and low maintenance costs, has garnered widespread favor upon its introduction. The types of external sheath for direct-burying steam insulation pipes primarily used in China include "plastic-clad steel" and "steel-clad steel." The technical route for steel-clad steel direct-burying involves replacing traditional brick or concrete trenching with steel sleeves. The sliding interface of the pipeline is between the pipeline support and the inner wall of the steel sleeve. Direct-burying steam pipelines; direct-burying; external fixation; internal fixation. In recent years, direct-burying steam pipelines have been extensively tested in northern cities. When steam pipelines cross major city thoroughfares or when environmental beautification is involved, the direct-burying method effectively addresses these issues. It has gained wider application due to its quick construction, good insulation properties, low construction costs, and material savings. As a new phenomenon, the state construction department has not yet established formal standards for detailed regulations on direct-burying steam pipelines.

Steel clad steel thermal insulation pipe manufacturer's prices, the characteristics of buried steam pipelines include fast construction progress, excellent insulation performance, low construction cost, and material savings, making them increasingly widely used as a new material in the heating industry. Due to the lack of design specifications for high-temperature steam pipelines, the insulation structures and fixing methods vary among different manufacturers. This article discusses several common characteristics of buried steam pipelines available on the market.