... ASTM A888, UPC, CSA B-70 available 2) Material:gray iron Cast Iron Pipes1) Sizes: 1.5", 2", 3", 4", 5", 6", 8 ... : Flat and straight; High strength and density without defect; Easy to install and maintain; Long lifetime, fireproof and low noise rate.Packing: wooden pallets Cast Iron Pipes