Hot, Hot, Hot…High Pressure Natural Gas For Pre/Post Weld Heating, Bending, Heat Treat
You don’t need expensive fuel gases or gas additives for quick pre-
A torch fueled with natural gas has a large bulbous flame that actually has more BTUs than acetylene so it is perfect for heating large areas. The bigger the item being heated the better natural gas performs.
Natural gas costs half as much as propane and acetylene and 75% less than propylene. Best of all there are no limits on withdrawal rates (acetylene is limited to 15 psi) and no icing of the cylinder valve that is common with liquid fuel gases.
We put two torches on opposite sides of a large tube and flange...one torch with Chemolene and the other torch with just natural gas at 18 psi.
After 30 minutes the natural gas side was
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