ANSI 300LB BL 盲板法兰属于美标法兰标准体系。是美标法兰(又称ANSI法兰)的其中一种表现形式，是设备或管道上常用的法兰。以下是ANSI 300LB BL 盲板法兰中，相关压力下，各部位的全部尺寸及图示，以方便广大法兰从业者查询和参考。
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ANSI 300LB BL 盲板法兰标准 |
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|
压力 |
尺寸 |
外径 |
中心距 |
孔径 |
孔数 |
盘高 |
水线径 |
水线高 |
RF单重 |
FF单重 |
|
ANSI 300LB BLD 盲板 |
1/2 |
95.2 |
66.5 |
15.7 |
4 |
14.2 |
35.1 |
1.6 |
0.64 |
0.71 |
|
3/4 |
117.3 |
82.6 |
19 |
4 |
15.7 |
42.9 |
1.6 |
1.09 |
1.19 |
|
|
1 |
123.9 |
88.9 |
19 |
4 |
17.5 |
50.8 |
1.6 |
1.39 |
1.5 |
|
|
1-1/4 |
133.3 |
98.6 |
19 |
4 |
19 |
63.5 |
1.6 |
1.79 |
1.91 |
|
|
1-1/2 |
155.4 |
114.3 |
22.3 |
4 |
20.6 |
73.15 |
1.6 |
2.65 |
2.82 |
|
|
2 |
165.1 |
127 |
19.1 |
8 |
22.3 |
91.9 |
1.6 |
3.19 |
3.35 |
|
|
2-1/2 |
190.5 |
149.4 |
22.3 |
8 |
25.4 |
104.6 |
1.6 |
4.85 |
5.06 |
|
|
3 |
209.5 |
168.1 |
22.3 |
8 |
28.4 |
127 |
1.6 |
6.76 |
6.99 |
|
|
3-1/2 |
228.6 |
184.2 |
22.3 |
8 |
30.2 |
139.7 |
1.6 |
8.71 |
9 |
|
|
4 |
254 |
200.1 |
22.3 |
8 |
31.7 |
157.2 |
1.6 |
11.49 |
11.84 |
|
|
5 |
279.4 |
234.9 |
22.3 |
8 |
35 |
185.7 |
1.6 |
15.61 |
16 |
|
|
6 |
317.5 |
269.7 |
22.3 |
12 |
36.5 |
215.9 |
1.6 |
20.88 |
21.36 |
|
|
8 |
381 |
330.2 |
25.4 |
12 |
41.1 |
269.7 |
1.6 |
34.21 |
34.85 |
|
|
10 |
444.5 |
387.3 |
28.4 |
16 |
47.7 |
323.9 |
1.6 |
53.56 |
54.35 |
|
|
12 |
520.7 |
450.8 |
31.7 |
16 |
50.8 |
381 |
1.6 |
78.86 |
79.94 |
|
|
14 |
584.2 |
514.3 |
31.7 |
20 |
53.8 |
412.8 |
1.6 |
105.13 |
106.62 |
|
|
16 |
647.7 |
571.5 |
35 |
20 |
57.15 |
469.9 |
1.6 |
137.57 |
139.29 |
|
|
18 |
711.2 |
628.6 |
35 |
24 |
60.45 |
533.4 |
1.6 |
175.79 |
177.69 |
|
|
20 |
774.7 |
685.8 |
35 |
24 |
63.5 |
584.2 |
1.6 |
221.36 |
223.62 |
|
|
24 |
914.4 |
812.8 |
41.1 |
24 |
69.85 |
692.2 |
1.6 |
339.75 |
342.88 |
|
