What is an advantage of oxyfuel flame cutting?

• A. It can cut up to 12 inches thick carbon steel
• B. It produces smooth cuts with straight sides and a narrow kerf
• C. It uses relatively inexpensive equipment that requires no electricity
• D. All the above

Answer: (D)

Oxyfuel flame cutting is valued for practical advantages in shop and field work. It can cut thick carbon steel because the flame preheats the metal and the high-velocity jet of oxygen continues the oxidation process, allowing heavy sections to be separated in a single cut, with practical capability reaching around a foot thick depending on torch size and setup. It requires no electricity, since it runs on fuel gas and oxygen, which makes it useful where power is limited or unavailable. The equipment is relatively inexpensive and simple—just a torch, regulators, hoses, and gas cylinders—making it affordable and easy to maintain compared with more complex cutting systems. Taken together, these points explain why all of the above is considered the best answer.