Welder Red Seal · Question
A welder is setting up for oxy-fuel cutting 12 mm mild steel plate. They have attached an appropriate cutting tip and are ready to adjust the gas pressures. What is the typical oxygen working pressure range for this application?
For oxy-fuel cutting of 12 mm (1/2 inch) mild steel, the oxygen cutting pressure typically ranges from 280-420 kPa (40-60 psi). Pressures in the 70-140 kPa rang
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Question: A welder is setting up for oxy-fuel cutting 12 mm mild steel plate. They have attached an appropriate cutting tip and are ready to adjust the gas pressures. What is the typical oxygen working pressure range for this application?
Answer options:
- 15-25 kPa (2-4 psi)
- 70-140 kPa (10-20 psi) ✅ 280-420 kPa (40-60 psi)
- 500-700 kPa (70-100 psi)
Correct answer: 280-420 kPa (40-60 psi)
Explanation: For oxy-fuel cutting of 12 mm (1/2 inch) mild steel, the oxygen cutting pressure typically ranges from 280-420 kPa (40-60 psi). Pressures in the 70-140 kPa range are too low and would result in an inefficient cut.
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