Ductile Iron Flanged Adaptors Materail: GGG500-7 EN14525/ANSI/AWWA C 219 The ductile cast iron Flanged Adaptors and couplings are designed for gas and pipelines ... purposes , It is suitable for steel , GRP, PVC, PE, Ductile Iron , Cast Iron and Asbestos Cement . When connecting PE pipes , It is important ... to customer's request.3) Body material is GGG500-7 Ductile Iron Flanged Adaptors