2″ SDR7 Ductile Iron Backup ring
2″ SDR7, IPS, Ductile Iron Rings for HDPE pipe adaptor
IPS Ductile Iron Backup Ring/flange for HDPE adaptor
4″ Backup rings, SDR7
Ductile Iron Rings, ductile iron flange, also named as convert flange. it’s used for HDPE pipe adaptor