ductile iron pipe ISO2531,EN545 Class : K9 SIze : DN80-DN1200 Inner cement line: Portland cement lining as per ISO4179 ductile iron pipeSpecifications: 1) The ... standard of pipe: ISO 2531 - 1998, EN545-2002 , K9 2) ... 1,200 mm 8) High strength, lighter than gray iron, good corrosion resistance, no furring, small flow resistance, ...