Shielded metal arc welding of mild and 50kgf/mm2 high tensile steels of ships, bridges, buildings and pressure vessels.

Characteristics on usage:

LB-52-18 is an iron powder low hydrogen type covered electrode for all-position welding. The mechanical properties of the weld metal are the same as LB-52.

Its usability by direct current is the best among low hydrogen type electrodes.

Notes on usage:

1. Dry the electrodes at 300~350C for 30~60 minutes before use.

2. Take the backstep method or strike the arc on a small steel plate prepared for this particular purpose to prevent blowholes at the arc starting.

3. Keep the arc as short as possible.