... Ductile iron pipes is confim to GB13295, ISO2531, ISO4179, ISO8179, ISO4633, ISO7186, EN545, EN598, BS4772 Standard. N II-type joint pipe for ... to DN1000, the minimum elongation after fracture shall be 7% for thickness classes greater than K12HYDROSTATIC TEST PRESSURE AT WORKS: All ... sufficient restraint to high pressure during test.2). 16 bar for pipes and fittings with PN10 flanges. PACKING:The pipes ...