ERW waldi zagaye bututu kuma ana kiransa Electric Resistance Welded Pipes.This irin karfe bututu da shambura ne yadu amfani a daban-daban filayen kamar aikin injiniya dalilai, wasan zorro, scaffolding, line bututu da dai sauransu ERW karfe bututu da tube suna samuwa a cikin daban-daban halaye, bango kauri, da diameters na ƙãre bututu.
