Flange Inside Diameter (B) - CAESAR II - Help

CAESAR II Users Guide

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CAESAR II Version
12

Specifies the inner diameter of the flange.

Typical units (depending on your unit system):

  • in

  • mm

  • cm

For integral type flanges, this value will also be the inner pipe diameter. This value is referred to as "B" in the ASME code.

The flange inside diameter is contained in the flange database. The software looks up this value whenever you press Ctrl+ F in the Flange tab. The flange database contains properties of ANSI B16.5 and API 605 flanges.

For inside diameters not specified in B16.5, the matching ID of standard wall pipe is used. Verify this dimension based on the actual application and use of the flange. The following table shows pipe inside diameters for various nominal sizes. All sizes are shown in inches.

Nominal Size

Matching Inside Pipe Diameter

STD

Sch 40

Sch 60

Sch 80

1

1.049

1.049

-

0.957

2

2.067

2.067

-

1.939

3

3.068

3.068

-

2.900

4

4.026

4.046

-

3.826

5

5.047

5.047

-

4.813

6

6.065

6.065

-

5.671

8

7.981

7.981

7.813

7.625

10

10.020

10.020

9.750

9.564

12

12.000

11.938

11.626

11.376

14

13.250

13.126

12.814

12.500

16

15.250

15.000

14.688

14.314

18

17.250

16.876

16.500

16.126

20

19.250

18.814

18.376

17.938

24

23.250

22.626

22.064

21.564