Material: ductile iron (DI).Standard: ISO2531, BS EN545, BS EN598, AWWA C219, AWWA C110, ASME B16.42;Internal lining: 1cement mortar; 2Sulphuric Resistance Cement; 3Sulphuric Resistance Cement and Epoxy; 4H.A.cement;External coated: 1zinc and bitumen; 2zinc and 2 epoxy coatings; 3Metallic Zinc and a coating of suitable etching prima and 2 Epoxy Coatings; 4zinc and PU; Suitable medium: potable water, drainage, sewage, waste water; Suitable tempreture: -40deg~-125deg; Packing: plastic film plus pallet; Origin: China.