Before revision: Welders use fillet welds when connecting flanges to pipes and welding cross sections of infrastructure, and when bolts are not strong enough and will wear off easily.Althouse p.185 Making a fillet weld with gas metal arc welding There are two main types of fillet weld: transverse fillet weld and parallel fillet weld.
After revision: Welders use fillet welds when connecting flanges to pipes and welding cross sections of infrastructure, and when bolts are not strong enough and will wear off easily.Althouse p.185 Making a fillet weld with gas metal arc welding