ERW (Electro-emegide welded) Pipe Line N'ihi ngwa ngwa mmepe na China, e nwere a elu ina maka ezi mma, nnukwu dayameta ERW akpa maka mmanụ & gas ụgbọ njem, mmiri & Sewerage njem na obodo na-ewu ụlọ ọrụ.
