Analysis of the Long-Term Corrosion Behavior of X80 Pipeline Steel in Acidic Red Soil Using Electrical Resistance Test Technique

Table 1

Fitted values of , , and for the resistance variation curve.

Corrosion stage
	I	−0.0171	0.1929	−0.1800
II	0.0326	−0.1839	0.7016
III	−0.0179	1.0964	−6.1214