The higher the welding torch tip number, the larger the tip opening is.

• A. True
• B. False
• C. Depends on gas
• D. No relation

Answer: (A)

In this style of welding equipment, the tip size is represented by a number that directly reflects the bore diameter of the tip opening. As that number increases, the opening gets larger, allowing more gas to flow through. That bigger opening produces more heat and a broader flame, which is why larger-tip sizes are used for heavier work or thicker metal. The flame characteristics depend on the gas mix and pressure, but the numeric labeling itself tracks the physical size of the orifice, not the gas type. So the statement is true: higher tip numbers correspond to larger tip openings.