... standard length and best price 1), Product Information The ductile iron pipe manufactured by vortex are mainly used for transferring the drinkable ... .2),Standard*conform to ISO2531/EN545/EN598/4179/81793), Material * Ductile Iron GGG500-7&400-12 or ASTM-A-536grade 80 ... ), Inspection * Foundry in-house * Third Party inspection available upon request Ductile Iron Pipe