Highly efficient alkaline-type electrode with thick coating, used for welding light-alloy steels with fine-grained structure and high-strength pipes. It is designed for welding materials that are in working temperatures from -60 ° C to 450 ° C, in environments with impacts, pressure and vibration. Suitable for position welding, it is used for welding oil and gas pipes, especially from material X6. For position welding, electrodes with a diameter of 2.50 mm and 3.25 mm are especially recommended. High quality of welding seams at X-ray control.