3.4.1 Single Groove Welds
The terms “Single Weld” and “Double Weld” should be clarified. A square groove, when welded from
one side, is called a single-square-groove weld as shown in Figure 3.11. When welded from both
sides, it is called a double-square-groove weld (see Figure 3.14).
Figure 3.12 shows a bevel-groove weld that is chamfered on one side only, but welded from both
sides. It is commonly considered as a single-bevel-groove weld.