Pipe Spacing - Flange to Flange for ANSI Class 150 to 400

Pipe Spacing - Flange to Flange for ANSI Class 150 to 400 Pipe spacing is figured for 1 inch between flanges. Dimensions are from center of pipe to center of pipe.
Pipe Size (NPS)	1	1 1/2	2	2 1/2	3	3 1/2	4	6	8	10	12	14	16	18	20	22	24
1/2	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
3/4	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
1	5 5/8	6 1/8	6 3/8	6 7/8	7 1/4	-	8 1/2	10 1/8	11 3/8	13 1/8	14 1/8	15	16 5/8	17 3/4	18 3/8	-	21 5/8
1 1/4	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
1 1/2	-	6 1/2	6 3/4	7 1/4	7 5/8	-	8 7/8	10 1/2	11 3/4	13 1/2	14 1/2	15 3/8	17	18 1/8	18 3/4	-	22
2	-	-	7 1/4	7 3/4	8 1/8	-	9 3/8	11	12 1/4	14	13	15 7/8	17 1/2	18 5/8	19 1/4	-	22 1/2
2 1/2	-	-	-	8 1/4	8 5/8	-	9 7/8	11 1/2	12 3/4	14 1/2	15 1/2	16 3/8	18	19 1/8	19 3/4	-	23
3	-	-	-	-	8 7/8	-	10 1/8	11 3/4	13	14 3/4	15 3/4	16 5/8	18 1/4	19 3/8	20	-	23 1/4
3 1/2	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
4	-	-	-	-	-	-	10 7/8	12 1/2	13 3/4	15 1/2	16 1/2	17 3/8	19	20 1/8	20 3/4	-	24
5	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
6	-	-	-	-	-	-	-	13 1/2	14 3/4	16 1/2	17 1/2	18 3/8	20	21 1/8	21 3/4	-	25
8	-	-	-	-	-	-	-	-	16	17 3/4	18 3/4	19 5/8	21 1/4	22 3/8	23	-	26 1/4
10	-	-	-	-	-	-	-	-	-	19	20	20 7/8	22 1/2	23 5/8	24 1/4	-	27 1/2
12	-	-	-	-	-	-	-	-	-	-	21 1/2	22 3/8	24	25 1/8	25 3/4	-	29
14	-	-	-	-	-	-	-	-	-	-	-	23 3/8	25	26 1/8	26 3/4	-	30
16	-	-	-	-	-	-	-	-	-	-	-	-	26 1/4	27 3/8	28	-	31 1/4
18	-	-	-	-	-	-	-	-	-	-	-	-	-	28 1/8	28 3/4	-	32
20	-	-	-	-	-	-	-	-	-	-	-	-	-	-	30	-	33 1/4
22	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
24	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	35 1/2

Centigram

Fill Rate

Longitudinal Hoop Stress Thin-wall Section

Resistors in Parallel