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

Table 4

Specific parameters of the buried gas pipeline model.

Material	Length, (m)	Diameter, (m)	Thickness, (mm)	Buried depth (m)		(GPa)	(°C)	(MPa)
Aluminium alloy	2.3	0.08	1.5	0.27	0.34	70		35

Note: : Poisson’s ratio; : elasticity modulus; : coefficient of linear expansion; : allowable stress.