to thaw the pipe, or wrap it in towels soaked in hot water, according to the Red Cross. Don’t use any device with an open flame, like a blowtorch, kerosene/propane heater or charcoal stove.
Warm towels: Wrap the pipe with towels soaked in hot water. Keep replacing them as they cool. Space heater: Place a space heater near the frozen area (keep it away from flammable materials).