Ductile Iron Pipe Features:Note: 1.Design and manufacture:GB/T13295/ISO2531/EN545 2.Connect type:T type/K type/S type/N1 type 3.Size: DN80 to DN 2600 4.Internal lining: Blast furnace/Portland cement/Sulphate-resistant cement/High Alumina Cement 5.External coating: Zinc/Zn+Al Alloy/Bitumen/Epoxy resin |