Which tank size is commonly labeled as 'B' in oxy-fuel systems?

• A. 40 Cubic Feet
• B. 10 Cubic Feet
• C. 20 Cubic Feet
• D. 60 Cubic Feet

Answer: (A)

In oxy-fuel systems, cylinder size designations indicate roughly how much gas the cylinder contains, which helps you plan cutting or welding tasks and handle the gas safely. The mid-size acetylene (fuel gas) cylinder is the one most commonly encountered, and it holds about forty cubic feet of gas. That amount offers a practical balance: enough gas for typical jobs without making the cylinder too heavy to move. Smaller cylinders are lighter and used for shorter runs, while larger ones are chosen when longer runs or more frequent use is expected. So, the commonly referenced mid-size capacity around forty cubic feet is the standard you’ll see associated with that designation in oxy-fuel setups.