Nominal size			Ｂ	Ｌ
Ａ	Ｂ	Wall Thickness
8	1/4	S80	23	21.1
10	3/8	S80	28	26.5
15	1/2	S80	33	28.9
20	3/4	S80	38	35.1
25	1	S80	47	38.2
32	1 1/4	S80	57	45.0
40	1 1/2	S80	64	50.8
50	2	S80	77	60.1
65	2 1/2	S80	96	67.3
80	3	S80	110	86.2
15	1/2	S160	38	35.1
20	3/4	S160	47	38.2
25	1	S160	57	45.0
32	1 1/4	S160	64	50.8
40	1 1/2	S160	77	60.1
50	2	S160	91	64.3
65	2 1/2	S160	110	85.2
80	3	S160	120	94.5