ANSI 900LB 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 900LB 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 900LB 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 900LB BLD 盲板 |
1/2 |
120.6 |
82.6 |
22.3 |
4 |
22.3 |
35.1 |
6.4 |
1.78 |
2.22 |
|
3/4 |
130 |
88.9 |
22.3 |
4 |
25.4 |
42.9 |
6.4 |
2.41 |
2.93 |
|
|
1 |
149.3 |
101.6 |
25.4 |
4 |
28.4 |
50.8 |
6.4 |
3.56 |
4.23 |
|
|
1-1/4 |
158.7 |
111.3 |
25.4 |
4 |
28.4 |
63.5 |
6.4 |
4.12 |
4.85 |
|
|
1-1/2 |
177.8 |
124 |
28.4 |
4 |
31.7 |
73.15 |
6.4 |
5.76 |
6.67 |
|
|
2 |
215.9 |
165.1 |
25.4 |
8 |
38.1 |
91.9 |
6.4 |
10.08 |
11.38 |
|
|
2-1/2 |
244.3 |
190.5 |
28.4 |
8 |
41.1 |
104.6 |
6.4 |
13.93 |
15.6 |
|
|
3 |
241.3 |
190.5 |
25.4 |
8 |
38.1 |
127 |
6.4 |
13.11 |
14.57 |
|
|
4 |
292.1 |
234.9 |
317 |
8 |
44.5 |
157.2 |
6.4 |
22.2 |
24.27 |
|
|
5 |
349.2 |
279.4 |
35 |
8 |
50.8 |
185.7 |
6.4 |
36.51 |
39.58 |
|
|
6 |
381 |
317 |
31.7 |
12 |
55.6 |
215.9 |
6.4 |
47.5 |
50.92 |
|
|
8 |
469.9 |
393.7 |
38.1 |
12 |
63.5 |
269.7 |
6.4 |
82.56 |
87.72 |
|
|
10 |
546.1 |
469.9 |
38.1 |
16 |
69.85 |
323.9 |
6.4 |
122.66 |
129.38 |
|
|
12 |
609.6 |
533.4 |
38.1 |
20 |
79.25 |
381 |
6.4 |
173.24 |
181.04 |
|
|
14 |
641.3 |
558.8 |
41.1 |
20 |
85.8 |
412.8 |
6.4 |
206.56 |
214.74 |
|
|
16 |
704.8 |
615.9 |
44.4 |
20 |
88.9 |
469.9 |
6.4 |
259.56 |
268.9 |
|
|
18 |
787.4 |
685.8 |
50.8 |
20 |
101.6 |
533.4 |
6.4 |
367.54 |
378.75 |
|
|
20 |
857.2 |
749.3 |
53.8 |
20 |
107.9 |
584.2 |
6.4 |
464.12 |
477.37 |
|
|
24 |
1041.4 |
901.7 |
66.6 |
20 |
139.7 |
692.2 |
6.4 |
877.37 |
897.77 |
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