... OR ISO2531 3.Epoxy coating or bitumen+zinc coating+cement reducer coupling-ductile iron pipe fittings: ISO2531 BS/EN545 Material: Ductile ... :Flange type: double flanged bend,all flanged tee,flanged bell mouth,all flanged cross, double flanged taper,flanged spigot,blank flange,double flanged 90 long radius bend ...