Size Range: Commonly 1/2" to 24" (DN15 - DN600). Common sizes include DN50 (165mm OD), DN100 (220mm OD), and DN150 (285mm OD).Material: Mild Steel, Carbon Steel (ASTM A105), or Stainless Steel.Coating: Hot Dip Galvanized (HDG) for enhanced rust protection.Pressure Rating: Typically rated from Class 150 to Class 2500, or PN10, PN16, PN25, PN40.