Symbols of weldings, which has highest strength.

In welding, various symbols are used to represent different types of welds and welding processes. These symbols are standardized and are often specified in engineering drawings to convey information about the weld to welders and inspectors. The strength of a welded joint depends on factors such as the welding process, the type of filler material used, and the material being welded.

Here are some common welding symbols:

1. Fillet Weld Symbol:

   • The fillet weld is one of the most common types of welds. It is represented by a triangle on the welding symbol. The size of the triangle indicates the size of the weld, and an arrow points to the side where the weld is to be made.

2. Groove Weld Symbol:

   • The groove weld symbol represents a weld made in the groove between two pieces of metal. It is typically indicated by a square or rectangle on the welding symbol.

3. Plug or Slot Weld Symbol:

   • A plug or slot weld is represented by a small circle or oval on the welding symbol. It indicates that a hole is to be filled with weld metal.

4. Square Groove Weld Symbol:

   • The square groove weld symbol represents a weld made in a square groove. It is indicated by a square on the welding symbol.

5. V-Groove Weld Symbol:

   • The V-groove weld symbol represents a weld made in a V-groove between two pieces of metal. It is indicated by a V shape on the welding symbol.

Regarding the strength of welded joints, it's important to note that the strength of a weld depends on various factors, including the welding process, the skill of the welder, the quality of the materials, and the specific design and specifications of the joint. There is no universal welding symbol that inherently represents the highest strength, as the strength is determined by the combination of these factors.

In critical applications where high strength is required, welding processes such as submerged arc welding (SAW), gas tungsten arc welding (GTAW or TIG), and gas metal arc welding (GMAW or MIG) are often used. These processes, when executed with proper techniques and quality control, can produce welds with high strength and integrity. The use of high-strength filler materials and proper joint preparation also contributes to achieving strong welds.