Outside Dia	Socked type			Structural Diameter
Size	Do	d1	d2	I	L
1/2″	30.5	21.54	21.23	24.22	31.1
3/4″	36.8	26.87	26.57	27.4	35.2
1″	45.5	33.66	33.27	30.58	40.5
1-1/4″	55	42.42	42.04	34.75	46.06
1-1/2″	61.5	48.56	48.11	37.93	50.33
2″	75	60.63	60.17	41.1	56
2-1/2″	89	73.38	72.85	47.45	65.5
3″	106	89.31	88.70	50.63	70
4″	133	114.80	114.10	60.15	82.26