... loss, perfect joint appearance and less slag covering during welding For Main Structure WeldingAWS A5.20 E70T-5JIS Z3313 YFL ... loss, perfect joint appearance and less slag covering during welding, which all will lead perfect mechanical properties and fine ... high tensile steel, widely used in welding of boiler, tanks, shipbuilding, bridges, constructions, and pipes.Notes on UsageUse 100% CO2 gasCO2 ...