1.ISO2531 &EN545 certificated by SGS 2.DN80--1200 T-type 6 meter 3.zinc spraying, bitumen coating,cement ... lining ,epoxy 1) Standard: ISO2531, BSEN5452) Effective length:DN80-DN1200 6M by bulk shipment,5.7M by20'or40’container ... ;Spectrum Analysis;Hardness Test;Tensile Test;Crush Test.6) Diameter: DN80- DN20007) Joint type: T joint8)High strength ,lighter than gray ...