Copyright (c) 2012, PT. Union Tetap Jaya. All rights reserved
One-side shielded metal arc welding of pipes
and general butt joints of mild steel and
490N/mm² high tensile steel. For one-side
Characteristics on usage
LB-52U is a low hydrogen type covered
electrode for exclusive use for one side welding
of pipes and general structures.
Its arc stability is extremely good to perform
one-side welding with relatively low currents.
LB-52U provides good slag removability and
smooth weld beads.
Notes on usage
Dry the electrodes at 300-350°C for 30-60 minutes before use.
Reverse side bead with good appearance is obtained with proper current and optimum root
Cut off the arc after setting the crater to the sidewall of the groove to avoid crater cracks.
Strike the arc on a small steel plate prepared for this purpose or on the sidewall of the groove
to prevent blowholes at the arc starting.
Keep the arc as short as possible.