Expander Flange Dimensions

ANSI B16.5 Expander Flange Class 150

Pipe Size
(NPS)		 Design
Type		 Outside
Diameter
of
Flange
A		 Diameter
of
Raised
Face
B		 Thickness
of
Flange
C		 Diameter
of
Bore
D		 Diameter
of
Bore
D2		 Diameter
of Hub
at Base
J		 Length
of
Hub
K		 Slope
at
Bevel
SB
2 x 4 C 6 3 5/8 3/4 2.067 4.026 3 1/16 3 5/8 29° *
3 x 4 A 7 1/2 5 15/16 3.068 4.026 4 1/4 2 3/4 15°
4 x 6 C 9 6 3/16 15/16 4.026 6.065 5 5/16 3 1/4 30° *
2 x 3 A 6 3 5/8 3/4 2.067 3.068 3 1/16 2 1/2 16°
6 x 8 C 11 8 1/2 1 6.065 7.981 7 9/16 4 28° *
8 x 10 C 13 1/2 10 5/8 1 1/8 7.981 10.020 9 11/16 4 29° *
8 x 12 C 13 1/2 10 5/8 1 1/8 7.981 12.000 9 11/16 6 29° *
10 x 12 C 16 12 3/4 1 3/16 10.020 12.000 12 3 15/16 39° *
10 x 14 C 16 12 3/4 1 3/16 10.020 13.250 12 5 7/16 30° *
14 x 18 C 21 16 1/4 1 3/8 13.250 17.250 15 3/4 5 11/16 30° *
18 x 20 A 25 21 1 9/16 17.250 19.250 19 7/8 5 1/2 14°
18 x 24 C 25 21 1 9/16 17.250 23.250 19 7/8 8 13/16 28° *
20 x 24 C 27 1/2 23 1 11/16 19.250 23.250 22 6 7/16 30° *
12 x 14 D 19 15 1 1/4 12.000 13.250 14 3/8 4 1/2 11°
12 x 16 C 19 15 1 1/4 12.000 15.250 14 3/8 4 13/16 30° *
14 x 16 A 21 16 1/4 1 3/8 13.250 15.250 15 3/4 5 15°
24 x 30 C 32 27 1/4 1 7/8 23.250 29.250 26 1/8 8 11/16 30° *

ANSI B16.5 Expander Flange Class 300

Pipe Size
(NPS)		 Design
Type		 Outside
Diameter
of
Flange
A		 Diameter
of
Raised
Face
B		 Thickness
of
Flange
C		 Diameter
of
Bore
D		 Diameter
of
Bore
D2		 Diameter
of Hub
at Weld
H		 Diameter
of Hub
at Base
J		 Length
of
Hub
K
2 x 3 A 6 1/2 3 5/8 7/8 2.067 3.068 2.375 3 5/16 2 3/4
6 x 8 B 12 1/2 8 1/2 1 7/16 6.065 7.981 6.625 8 1/8 3 7/8
8 x 10 A 15 10 5/8 1 5/8 7.981 10.020 8.625 10 1/4 4 3/8
10 x 12 A 17 1/2 12 3/4 1 7/8 10.020 12.000 10.750 12 5/8 4 5/8
2 x 4 C 6 1/2 3 5/8 7/8 2.067 4.026 2.375 3 5/16 2 3/4
3 x 4 D 8 1/4 5 1 1/8 3.068 4.026 3.500 4 5/8 3 1/8
4 x 6 C 10 6 3/16 1 1/4 4.026 6.065 4.500 5 3/4 3 3/8
12 x 14 D 20 1/2 15 2 12.000 13.250 12.750 14 3/4 5 1/8
20 x 24 B 30 1/2 23 2 1/2 19.250 23.250 20.000 23 1/8 6 3/8
14 x 16 D 23 16 1/4 2 1/8 13.250 15.250 14.000 16 3/4 5 5/8
16 x 18 D 25 1/2 18 1/2 2 1/4 15.250 17.250 16.000 19 5 3/4
18 x 20 D 28 21 2 3/8 17.250 19.250 18.000 21 6 1/4
24 x 30 B 36 27 1/4 2 3/4 23.250 29.250 24.000 27 5/8 6 5/8

ANSI B16.5 Expander Flange Class 400

Pipe Size
(NPS)		 Design
Type		 Outside
Diameter
of
Flange
A		 Diameter
of
Raised
Face
B		 Thickness
of
Flange
C		 Diameter
of
Bore
D		 Diameter
of
Bore
D2		 Diameter
of Hub
at Weld
H		 Diameter
of Hub
at Base
J		 Length
of
Hub
K
2 x 4 C 6 1/2 3 5/8 1 * * 2.375 3 5/16 2 7/8
3 x 4 D 8 1/4 5 1 1/4 * * 3.500 4 5/8 3 1/4
4 x 6 A 10 3/4 6 3/16 1 1/2 * * 4.500 6 4
2 x 3 A 6 1/2 3 5/8 1 * * 2.375 3 5/16 2 7/8
6 x 8 D 14 8 1/2 1 7/8 * * 6.625 8 3/4 4 5/8
8 x 10 D 16 1/2 10 5/8 2 3/16 * * 8.625 10 3/4 5 1/4
16 x 18 D 27 18 1/2 3 * * 16.000 19 1/2 7
18 x 20 D 29 1/4 21 3 1/4 * * 18.000 21 1/2 7 1/4
20 x 24 E 32 23 3 1/2 * * 20.00 24 7 1/2
10 x 12 D 20 12 3/4 2 1/2 * * 10.750 13 1/2 6
12 x 14 D 22 15 2 5/8 * * 12.750 15 3/4 6 1/8
14 x 16 D 23 3/4 16 1/4 2 3/4 * * 14.000 17 6 1/2
24 x 30 C 37 27 1/4 4 * * 24.00 28 1/4 8