Product Overview
The CQ 2-inch IPS Ductile Iron Backup Ring SDR11 is intended for HDPE flange adapter connections. This product is also referred to as a Backup Flange or Backing Flange.
Technical Specifications
- Product Type: Ductile Iron Backup Ring
- Pipe System: IPS
- Size: 2″
- SDR: SDR11
Dimensions
| 2" SDR11, IPS Backup Flange | ||
|---|---|---|
| Dimension | Inch | mm |
| Outside Diameter (OD) | 6 | 152.40 |
| Thickness (T) | 0.50 | 12.70 |
| Inner Diameter (I.D.) | 2.63 | 66.80 |
| Holes (N) | 4 | 4 |
| Bolt Hole Diameter (B.D.) | 0.75 | 19.05 |
| Bolt Circle Diameter (B.C.) | 4.75 | 120.65 |
| Radius (R) | 0.20 | 5.08 |
| Pressure Class (PC) | 200 | unit not stated |
| FM Rating (psi) | FM(160psi) | — |
Material
Material: Ductile Iron
Material Grade: ASTM A536 Grade 65-45-12
Drilling Standards
- ASME/ANSI B16.5
- ASME/ANSI B16.47
- ASME B16.1
- AWWA C207
Finish
Default Finish: Epoxy Powder Coating
Average coating thickness: 120 μm (applies only to Epoxy Powder Coating).
Optional Finishes:
- Primer
- E-Coating
- Galvanizing
- Hot-Dip Galvanizing
Application
HDPE flange adapter connections
Available Options
- Sizes: 2″–36″ (IPS) and 4″–24″ (DIPS)
- SDR Ratings: SDR 7, SDR 9, SDR 11
- Material: ductile iron, stainless steel SS316
- Finishes: Epoxy-Coated or Red Oxide Primer
CQ branded ductile iron backup rings are marked for product identification and traceability.
Manufacturing, Inspection and Quality Control
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