Product Overview
16" DIPS Ductile Iron Backup Ring for DIPS flange adapter connections.
Technical Specifications
- Product Type: Ductile Iron Backup Ring
- Pipe System: DIPS
- Size: 16"
- SDR (technical property): SDR11
Dimensions


| Dimension | Value | Metric |
|---|---|---|
| Outside Diameter (OD) | 23.5 in | 596.90 mm |
| Thickness (T) | 1.75 in | 44.45 mm |
| Inner Diameter (I.D.) | 17.59 in | 446.79 mm |
| Bolt Count | 16 | — |
| Bolt Hole Size (H) | 1.13 in | 28.70 mm |
| Bolt Hole Circle (BC) | 21.25 in | 539.75 mm |
| Radius (R) | 0.5 in | 12.70 mm |
| Unit Weight | 43 lb | 19.50 kg |
| HDPE Operating Pressure | 200 | — |
| Steel Operating Pressure | 267 | — |
Material
Ductile Iron. Material grade options: ASTM A536 Gr 60-45-12 or Gr 70-50-05.
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
DIPS flange adapter connection.
Design Simulation

Available Options
CQ Brand Identification
CQ branded products are marked for product identification and traceability.

Quality Control
Representative quality-control and handling references:
- Dimensional Inspection
- EN 10204 3.1 Material Certificate
- Appearance and Surface Inspection
- Protective Packing
- Product Photos Before Shipment







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