正三通

Nominal	Socket Type			Structural Diameter
SIZE	d1	d2	I	D	d	L
1/2"	22.40	21.52	30.0	29.00	16.0	83.60
3/4"	26.45	25.42	35.0	33.10	20.0	100.30
1"	32.55	31.37	40.0	40.00	25.0	115.80
1-1/4"	38.60	37.31	44.0	46.00	31.0	130.50
1-1/2"	48.70	47.21	55.0	57.00	40.0	164.00
2"	60.80	59.10	63.0	70.00	51.0	192.00
2-1/2"	76.60	75.30	64.0	88.00	72.0	216.00
3"	89.60	88.29	64.0	104.60	77.0	227.00
4"	114.70	113.20	84.0	134.00	100.0	303.00