LB 52U. E7016 5kg Monitors Commercial FinePix Z5fd Threading FinePix Z5fd Size: 5 6 7 8 10 12 14 17 and 19 1 2 Drive Accessories AWS A51 E7016LB52U is the worlds No1 covered electrode for uranami welding or the root pass meltthrough welding with penetration beads With LB52U your welding will be easier and faster and you will have confidence in the quality of your welds in any kind of pipe welding of mild steel and 490Nmm2 high tensile steelLB52U provides superior crack resistibility due to a lower level of diffusible hydrogen in the weld metal In addition its impact strength is high over a range of testing temperatures Therefore it can be used for lowtemperature applications as well as moderate hightemperature applications