The cathodic protection for natural gas pipeline project of Zhengzhou was carried out during Jul. 1999 to Oct. 2002. The protected object was 12 varieties buried pipeline, which diameter diversified from¦µ32£¦µ377, and 1064Km totally. This project which had high degree of difficulty and complex technical, adopted advanced deep-well anode cathodic protection technique, and supplemented by sacrificial anode technique, equalizing technique, insulating technique et al.
Ground-bed Erection of Deep-well Anode
Ground-bed Erection of Deep-well Anode |