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Ductile Iron Backup Flanges | Backing Ring Flange

Notes

Ductile Iron Backup Flanges | Backing Ring Flange: Dimensions are in inches
150# Drill Pattern Inside Diameters available in AFR (to fit Angle Face Rings) and IPS (to fit Stub-Ends)
Available Primer Painted or Hot-Dip Galvanized

ASTM A536 Material
Physical Properties (minimum)
Tensile Strength: 65,000 psi Yield Strength: 45,000 psi Elongation: 10%

Drilling Pattern #150

Nominal Size Inside Diameter – AFR
(ID)
Inside Diameter – IPS
(ID)
Outside Diameter
(OD)
Thickness
(T)
Bolt Circle
(BC)
Diameter Of Holes No. of Bolt Holes 45 Degree Bevel
(B)
Weight Each
(lbs)
12 0.90 3.50 0.50 2.38 0.625 4 0.250 1.0
34 1.11 3.88 0.50 2.75 0.625 4 0.250 1.4
1 1.75 1.38 4.25 0.50 3.13 0.625 4 0.250 1.7
114 2.00 1.72 4.63 0.50 3.50 0.625 4 0.250 1.8
112 2.25 1.97 5.00 0.50 3.88 0.625 4 0.250 2.0
2 2.80 2.46 6.00 0.50 4.75 0.750 4 0.250 3.0
212 3.31 2.97 7.00 0.50 5.50 0.750 4 0.250 3.9
3 3.94 3.60 7.50 0.50 6.00 0.750 4 0.250 4.0
4 4.94 4.60 9.00 0.56 7.50 0.750 8 0.250 6.5
5 6.10 5.69 10.00 0.63 8.50 0.875 8 0.250 7.0
6 7.20 6.75 11.00 0.63 9.50 0.875 8 0.250 8.0
8 9.25 8.75 13.50 0.63 11.75 0.875 8 0.312 11.5
10 11.44 10.95 16.00 0.63 14.25 1.000 12 0.312 15.0
12 13.44 12.95 19.00 0.75 17.00 1.000 12 0.312 26.0
14 14.81 14.20 21.00 0.75 18.75 1.125 12 0.312 34.0
16 16.91 16.20 23.50 0.75 21.25 1.125 16 0.375 37.0
18 18.91 18.20 25.00 0.88 22.75 1.250 16 0.375 42.0
20 20.91 20.25 27.50 0.88 25.00 1.250 20 0.375 51.0
24 24.91 24.25 32.00 1.00 29.50 1.375 20 0.375 76.0
30 30.91 30.25 38.75 1.00 36.00 1.375 28 0.500 104.0
36 36.91 36.25 46.00 1.13 42.75 1.625 32 0.500 150.0
42 42.91 42.28 53.00 1.25 49.50 1.625 36 0.500 208.0
48 48.91 48.28 59.50 1.25 56.00 1.625 44 0.500 246.0

Notes

Dimensions are in inches
150# Drill Pattern Inside Diameters available in AFR (to fit Angle Face Rings) and IPS (to fit Stub-Ends)
Available Primer Painted or Hot-Dip Galvanized

ASTM A536 Material
Physical Properties (minimum)
Tensile Strength: 65,000 psi Yield Strength: 45,000 psi Elongation: 10%

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Backing Ring Flange

Backing Ring Flange Products #1 Quality Flanges Manufacturers in India Australia, Egypt, Iran, New Zealand, Saudi, USA, backingringflange.com. Leading manufacturer and exporter of Backing Ring Flanges. We manufacturer and exporter all of these products in different materials such as Stainless Steel, Carbon Steel, Alloy Steel, Duplex and Super Duplex Steel, Cupro Nickel, Inconel, Monel, Hastelloy, Nickel Alloy and other ferrous and non-ferrous grades.