2″ SDR7 Ductile Iron Backup ring

Ductile Iron Ring/flange, also named as convoluted flange or bolt ring. it’s designed for HDPE pipe flange adapter

• Description: Ductile Iron Backup Ring
• Working Pressure: SDR7/ 276PIS.
• Brand: CQ 
• Ductile Iron Backup Flange Utilization HDPE Pipe, Stainless Steel and Carbon Steel Stub Ends
• Ductile Iron Backup Flange Material Grade: Cast Ductile iron ASTM A536
• Ductile Iron Backup Flange Design Standard: ASME/ANSI B16.5, ASME/ANSI B16.47 Class 150, ASTM B16.1 CL125, AWWA C207 B/D/E.
• Ductile Iron Backup Flange Finish: Epoxy Powder Coating, Prime Paint, E-Coating, Galvanization, Hot dipped.

 

Backup ring 2″  SDR7 Dimensions

 

 

 

 

 

 

 

 

 

 

 

2″ SDR7, IPS Backup Flange
	Inch	mm
Outside Diameter (OD)	6	152.4
Thickness (T)	0.75	19.05
Inner Diameter (I.D.)	2.46	62.48
Holes (N)	4	4
Bolt Hold Size (B.D.)	0.75	19.05
Bolt Circle (B.C.)	4.75	120.65
Radius (R)	0.31	7.87
Unit Weight (Lbs/kgs)	2.4	1.1
Pressure Class (PC)	335	335
FM Rate (psi)	FM(200psi)

 

When you purchase our rings, pls take care our brand “CQ” 

 

Ductile Iron Backup Rings Manufacture process

We also supply Stainless Steel Rings