Normal Pipe Size		Outside Diameter		Nominal Wall Thickness
A	B	JIS	ANSI	STD	Sch 40	XS	Sch 80
8	1/4	13.8	13.7	2.2	2.2	3.0	3.0
10	3/8	17.3	17.1	2.3	2.3	3.2	3.2
15	1/2	21.7	21.3	2.8	2.8	3.7	3.7
20	3/4	27.2	26.7	2.9	2.9	3.9	3.9
25	1	34.0	33.5	3.4	3.4	4.5	4.5
32	1-1/4	42.7	42.2	3.6	3.6	4.9	4.9
40	1-1/2	48.6	48.3	3.7	3.7	5.1	5.1
50	2	60.5	60.3	3.9	3.9	5.5	5.5
65	2-1/2	76.3	73.0	5.2	5.2	7.0	7.0
80	3	89.1	88.9	5.5	5.5	7.6	7.6
90	3-1/2	101.6	101.6	5.7	5.7	8.1	8.1
100	4	114.3	114.3	6.0	6.0	8.6	8.6
125	5	139.8	141.3	6.6	6.6	9.5	9.5
150	6	165.2	168.3	7.1	7.1	11.0	11.0
175	7	190.7	-	-	-	-	-
200	8	216.3	219.1	8.2	8.2	12.7	12.7
225	9	241.8	-	-	-	-	-
250	10	267.4	273.1	9.3	3.9	12.7	15.1
300	12	318.5	323.9	9.5	10.3	12.7	17.4
350	14	355.6	355.6	9.5	11.1	12.7	19.0
400	16	406.4	406.4	9.5	12.7	12.7	21.4
450	18	457.2	457.2	9.5	14.3	12.7	23.8
500	20	508.0	508.0	9.5	15.1	12.7	26.2
550	22	558.8	558.8	9.5	-	12.7	28.6
600	24	609.6	609.6	9.5	17.5	12.7	31.0
650	26	660.4	660.4	9.5	-	12.7	-
700	28	711.2	711.2	9.5	-	12.7	-
750	30	762.0	762.0	9.5	-	12.7	-
800	32	812.8	812.8	9.5	17.5	12.7	-
850	34	863.6	863.6	9.5	17.5	12.7	-
900	36	914.4	914.4	9.5	19.1	12.7	-
950	38	965.2	965.2	9.5	-	12.7	-