Nom. Pipe Size	D	B	B1	T (Min)				H
				Sch.40 (STD)	Sch.80 (XS)	Sch.160	xxs
1/8″	10.3	34	9.5	1.73	2.41			14
1/4″	13.7	34	11.0	2 .24	3.02			14
3/8″	17.1	57	12.5	2 .31	3.20			14
1/2″	21.3	64	14.5	2.77	3.73	4.78	7.47	14
3/4″	26.7	70	16.0	2.87	3.91	5.56	7.82	18
1″	33.4	76	19 0	3.38	4 .56	6 .35	9. 09	18
1-1/4″	42.2	83	23	3.56	4 .85	6.35	9 .73	18
1-1/2″	48.3	89	20.5	3.68	5.05	7 .14	10.15	18
2″	60.3	102	22.0	3.91	5.54	8 .74	11.07	20
2-1/2″	73.0	127	27.0	5.16	7.01	9 .53	14.02	20
3″	88.9	152	28.5	5.49	7.60	11.13	15.24	20
4″	114.3	178	32.0	6.35	8.08	13.49	17.12	20