Ductile Iron Backup Rings, also named as back-up flange or convert flange, it’s designed for HDPE pipe connection.
Ductile Iron have better strength than carbon steel, and better rust resistance property too.
Our ductile iron flanges has material ASTM A536 Grade 450-10,
Ductile Iron Backup Rings
Ductile Iron per standard ASTM A536
| Casting Grade | Tensile Strength, min | Yield Strength, min | Elongation in 2in or 50mm, %, min | ||
| psi, | Mpa | psi | Mpa | ||
| A536 Gr 65-45-12 | 65 000 | 448 | 45 000 | 310 | 12 |
| A536 Gr 80-55-06 | 80 000 | 552 | 55 000 | 379 | 6.0 |
Ductile Iron backup rings from 1/2 to 36 inch
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″.
Back-up Ring, also named Convoluted Flanges for adapter. Material: ductile iron A536 60-45-12 or CF8M. Suite for IPS adapter. Surface: Red prime paint/Epoxy Coating/E-coating/Hot dippted galvanized.
