Table 3.

AFM analyzing data of X80 pipeline steel coupons after removing the corrosion products and biofilms in the four conditions.

Experimental Condition	Mean Roughness nm	RMS Roughness nm	RP-V nm
Control	43 ± 3	58 ± 4	582 ± 21
SRB	78 ± 5	114 ± 5	1177 ± 32
SRB + 5 mA/cm2 AC	136 ± 9	204 ± 8	1676 ± 46
SRB + 10 mA/cm2 AC	278 ± 11	334 ± 13	1984 ± 69