Why does natural gas work better? Natural gas actually has more heat than acetylene in the outer flame to wrap the fitting and bring it up to temperature more evenly. When you apply the rod it flows farther, fills better and reduces oxidation problems.
Natural gas is plenty hot but the flame is softer and more forgiving for better control, less chance for melt through and fewer surface defects.
When the United Association of Plumbers Local 501 near Chicago switched from acetylene
to hi-
Mike Lang, Welding Director explains why UA Local 501 switched from acetylene to
hi-
