Round weld: rod ends overlap.When the fillet weld on both sides burns to the end, burning a certain length at the corner is circular welding.The welding length of fillet weld shall not be less than twice the size of welding foot, and continuous welding shall be used.In short, a long straight weld is sufficient by the calculation, but you must burn an "L" at the end of the long weld.

Stop welding: when the member is subjected to tensile stress, the weld shall be terminated in advance at the outer edge of the joint plate of the lap member, and the spacing shall not be less than the weld foot size.General Angle steel and steel plate overlap, the design requirement is that there are two fillet welds at the end of the limb and the back of the limb, and the length is the overlap length of the Angle steel. However, in fact, the weld of the Angle steel at the end of the two days needs to be "welded around", and "stop welding" is needed at the edge of the Angle steel and steel plate.