| SOF/SOB | 1/2"
3/4"
1"
11/4"
11/2"
| 22.0
27.2
34.0
42.7
49.0 | 88.9
98.4
107.9
117.5
127.0
| 95.2
117.5
123.8
133.3
155.6 | 60.3
69.8
79.4
88.9
98.4 | 66.7
82.5
88.9
98.4
114.3 | 34.9
42.9
50.8
63.5
73.0 | ＝D+1
D:为钢管外径 | 15.9
15.9
17.5
20.6
22.2 | 22.2
25.4
27.0
27.0
30.2 | 11.1
12.7
14.3
15.9
17.5
| 14.3
15.9
17.5
19.0
20.6 | 16.0
16.0
16.0
16.0
16.0 | 16.0
19.0
19.0
19.0
22.0
| 4
4
4
4
4
| 4
4
4
4
4 |
| 2"
21/2"
3"
31/2"
4" | 60.5
76.3
90.0
102.0
114.3
| 152.4
177.8
190.5
215.9
228.6 | 165.1
190.5
209.5
228.6
254.0 | 120.6
139.7
152.4
177.8
190.5 | 127.0
149.2
168.3
184.1
200.0 | 92.1
104.8
127.0
139.7
157.2 | ＝D+1.6 | 25.4
28.6
30.2
31.7
33.3 | 33.3
38.1
42.9
44.4
47.6 | 19.1
22.2
23.8
23.8
23.8 | 22.2
25.4
28.6
30.2
31.7 | 19.0
19.0
19.0
19.0
19.0 | 19.0
22.0
22.0
22.0
22.0 | 4
4
4
8
8 | 8
8
8
8
8 |
| 5"
6"
8"
10"
12" | 141.3
168.3
219.1
273.0
325.0 | 254.0
279.4
342.9
406.4
482.6 | 279.4
317.5
381.0
444.5
520.7 | 215.9
241.3
298.4
361.9
431.8 | 234.9
269.9
330.2
323.8
381.0 | 185.7
215.9
269.9
323.8
381.0 | ＝D+2.2 | 36.5
39.7
44.4
49.2
55.6 | 50.8
52.4
61.9
66.7
73.0 | 23.8
25.4
28.6
30.2
31.7 | 34.9
36.5
41.3
47.6
50.8 | 22.0
22.0
22.0
26.0
26.0 | 22.0
22.0
26.0
29.0
32.0 | 8
8
8
12
12 | 8
12
12
16
16 |
