Gas torch is a device that burns gases to produce extremely hot flames for welding, cutting and other applications. According to Metal Web News, the use of gas torches dates back to the mid-19th century, when people would burn a mixture of hydrogen and oxygen.
What is the temperature of a torch?
The temperature of a blow torch is about 2,372F (1,300C), a candle is 2,552F (1,400C), and an oxyacetylene torch is 5,432F (3,000C).
How To Choose And Use A Blowtorch | Ask This Old House
Ask This Old House heating and plumbing expert Richard Trethewey explains how to get the most out of each type of blowtorch.