Ductile iron pipe fittings 1.Materail: Ductile Iron. 2.Standard: ISO2531, EN545. 3.Usage: ... coating is zinc plus bitumen. We also manufacture ductile iron fittings with fusion bonded epoxy both inside and outside. 1, Standards ... available upon request .6, flanged pipe fittings , push-on Tyton socket fittings , Ductile iron/PVC fittings, K type bolted gland fittings . AWWA C110 flanged pipe ...