SF 7018 4 mm welding electrodes are designed for welding carbon (up to 0.4% carbon by mass) and low-alloy steels with a temporary rupture strength of up to 540 MPa, operating under dynamic loads and negative temperatures. SF-7018 4 mm electrodes are recommended for welding load-bearing and auxiliary structures in industrial construction, as well as for welding tanks, boilers, shipbuilding structures, coated or galvanized metal.