Heavy coated basic type electrode with high efficiency, which is for welding low alloy steels, fine grained structural steels and high strength steel pipes. Provides high crack resistance under difficult conditions such as dynamic loads, impact, pressure, vibration and service temperatures between -60°C and 450°C. Weld deposit is of extremely high metallurgical purity and very low hydrogen content. Especially 2,50 mm and 3,25 mm diameter well suited for easy positional welding which makes it suitable for joint welding and repair jobs of oil and gas pipes up to X70. Welds are of X-ray quality.