From galvanized pipe 1/2 1 inch Sepahan more for heat transfer, gas and water used. Galvanized pipe 1/2 to 1 inch thick 2 Sepahan in the branches ۶ meters with a diameter of 1/2 1 inch to 2 inch production can be. The diameter of these pipes is usually a nominal diameter that is larger than the inner diameter and smaller than the diameter of foreign.