Transcription: Oxyacetylene welders or gas welders as they're also called are one of the most commonly used welders today. Their heat is provided by igniting the gas supplied by the gas canister. This is mixed with air from a second canister for cleaner burning. The temperature produced after ignition can reach around 3,000 degrees Celsius or 5,430 degrees Fahrenheit. Fahrenheit, more than adequate to melt steel.