(LSAW - Longitudinal Submerged Arc Welding), ọ bụ otu ihe ahụ dị ka ịgbado ọkụ aka (LSAW – Longitudinal Submerged Arc welding), nke bụ otu ihe ahụ dị ka ịgbado ọkụ nke LSAW-Longitudinal Submerged Arc. Ebe ahụ bụ na ọ dị na ihe fọdụrụ ebu, ma slag abụghị electrode mkpuchi. Ọ bụ ọkachamara na agbaze agbaze. Usoro mkpuchi a nwere oghere a na-agbado site na ọkpọkọ gaa n'ihu nke mmiri ahụ.

Ise-waya submerged arc ịgbado ọkụ waya dayameta kwesịrị họrọ dị ka ịgbado ọkụ ugbu a, mgbe ugbu 5 wires na otu waya dayameta imeghari ka ugbu nso, i nwere ike iji otu waya dayameta Nchikota. Ise waya submerged arc ịgbado ọkụ ugbu a na arc voltaji ntọala, ị nwere ike pịa 1 silk elu ugbu a, voltaji nwayọọ nwayọọ mgbanwe ise waya obere ugbu a na voltaji. Na mbelata nke 10% ruo 30% nke ahịrị ahụ ji nwayọ belata, arc na 1 ~ 3V voltaji uru ji nwayọọ nwayọọ na-abawanye.