Also named ductile iron convoluted flange or back up ring. IPS bolt ring is designed for HDPE flange adapters. Mateiral: ductile iron A536 65-45-12 or ASTM A351 CF8M( SS316). Surface Finish optional for ductile iron Bolt Rings: Red prime paint/Epoxy Coating/E-coating/Glavernizaiton. Designed per ASME/ANSI B16.5, B16.47 ser. A CL150, B16.1 CL125, AWWA C207 B/D/E.
Back-up Ring, also named Convoluted Flanges for IPS adapter. Material: ductile iron A536 60-45-12 or CF8M. DR7 with pressure 275psi. Surface for ductile iron ring: Red prime paint/Epoxy Coating/E-coating/Hot dippted galvanized.
Backing flange Type: SE (Stub End) and AFR (Angle face ring) Material: ductile iron A536 60-45-12 or carton steel Surface: Red prime paint/Epoxy Coating/E-coating/Hot dippted galvanized. Flange Size: 1/2″-36″.