In a large mixing bowl, combine pumpkin puree, sweetened condensed milk, eggs, cinnamon, ginger, nutmeg, and salt. Mix well.
Pour the mixture into the unbaked pie crust.
Bake in preheated oven for 15 minutes. Reduce temperature to 350°F (175°C) and bake for 40 to 50 minutes more, or until a knife inserted near the center comes out clean.