... ,ISO4422, EN545,EN598,EN969,BS4772,AWWA C110/ C153, JIS G5526; Ductile iron pipe fittings1. Standards : ISO2531, ISO4422, EN545 , EN598 , EN969, BS4772 ... , AWWA C110, C153 .2. material : GGG500-7 or other Ductile iron . 3. Coating : Fusion bonded epoxy coating ; cement lining inside ... or SBR rubber seal ring,flange gasket, G.I steel or ductile iron bolts and nuts available upon request.6. Project ...