ERW waldi zagaye bututu kuma ake kira da Electric Resistance Welded Pipes.This irin karfe bututu da shambura ana amfani da ko'ina a fannoni daban-daban kamar aikin injiniya dalilai, wasan zorro, scaffolding, line bututu da dai sauransu ERW karfe bututu da tube suna samuwa a cikin daban-daban halaye, kaurin bango, da diamita na bututun da aka gama.
