Experimental Study on Thermal Insulation Effect of the Buried Oil-Gas Pipelines in Permafrost Regions

Table 1

Specific parameters of Sebei-Xining-Lanzhou buried gas pipeline.

Material	Pressure	Diameter	Thickness	Anticorrosion	Thermal insulation layer	Buried depth
	6.4 MPa	660 mm			No	2.5 m

Note: L415: the yield strength of pipeline steel; 3PE: the three-layer anticorrosive structure [17, 18].