正三通

Nominal	Socket Type			Structural Diameter
SIZE	d1	d2	I	D	d	L
1/2"	21.40	21.25	30.00	24.00	16.00	74.00
3/4"	26.75	26.58	35.00	27.00	22.00	84.00
1"	33.52	33.28	44.00	30.00	30.00	96.00
1-1/4"	42.28	42.05	54.00	34.00	38.00	114.00
1-1/2"	48.4	48.12	60.00	37.00	43.00	126.00
2"	60.45	60.18	73.00	40.00	54.00	146.00
2-1/2"	73.30	72.85	88.00	46.50	67.00	171.00
3"	89.25	88.70	105.00	50.00	82.00	194.00
4"	114.60	114.10	132.00	60.00	106.00	238.00
5"	141.50	141.10	162.00	69.00	133.00	291.00
6"	168.50	168.00	191.00	79.00	158.00	336.00
8"	219.80	218.70	246.00	102.00	214.00	433.00