Ductile Iron Backing Rings
- 1/2″ thru 65″ IPS
- 4″ thru 54″ DIPS
- SDR Range from 7 to 52 depending on the size
- Meets ASTM A536 Grade 65-45-12
Polypropylene Encapsulated (PPDI) Backing Rings
- PPDI Backing Rings are an exclusive product
- Tough chemical resistan convoluted rings for use when performance is on the line
- Glass reinforced polypropylene with A536 ductile iron insert
- Available 2″ thru 36″ SDR 13.5 and 2″ thru 30″ SDR 7
Stainless Steel Backing Rings
- All stainless steel backing rings are made from 316 stainless steel and tested with a Niton Analyzer prior to shipment.
- Available 1″ thru 63″ IPS and 4″ thru 48″ DIPS
- Meets ASTM A351-CF8M (316)
- Meets Requirements
- Class 150, mates with ANSI B16.5 and AWWA C207
Alamo Pipe also carries Plate Steel Rings (IPS)
- Material ASTM A36 plate steel with a 45 degree Chamfer/Radius
- Available 2″ thru 54″