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  • Steel Flanges

    A flange is a method of connecting pipes, valves, pumps and other equipment to form a piping system， provides easy access for cleaning, inspection or modification. read more

  • Pipe Fittings

    The ends of all buttweld fittings are bevelled.The shape of the bevel depending upon the actual wall thickness.This bevelled ends are needed to be able to make a "Butt weld". read more

  • Steel Pipes

    Pipe is a hollow tube with round cross section for the conveyance of products. The products include fluids, gas, pellets, powders and more. read more

Welcome to Steel Blind Flange,Steel Blank Flange,Steel Flange Cap

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A blind flange is a solid disk used to block off a pipeline or to create a stop. It is machined in the same manner as a regular flange with the mounting holes around the perimeter and the gasket sealing rings machined into the mating surface. The difference is that a blind flange has no opening to allow fluid to pass through. The blind flange can be inserted between two open flanges and used to block off the flow of liquid through a pipeline.

ASME B16.5 Blind Flange Dimensions

ASME B16.5 Blind Flange Dimensions

ASME B16.5 Welding Neck Flanges Class 150LBS Dimensions
NPS
D
L
Holes
B
G
Weight
1/2″
89
15.7
4
11.2
35.1
0.5
3/4″
99
15.7
4
12.7
42.9
0.8
1″
108
15.7
4
14.2
50.8
0.85
1-1/4″
117
15.7
4
15.7
63.5
1.4
1-1/2″
127
15.7
4
17.5
73.2
1.7
2″
152
19.1
4
19.1
91.9
2.3
2-1/2″
178
19.1
4
22.4
104.6
3.2
3″
191
19.1
4
23.9
127
4.1
3-1/2″
216
19.1
8
23.9
139.7
5.9
4″
229
19.1
8
23.9
157.2
7.5
5″
254
22.4
8
23.9
185.7
9
6″
279
22.4
8
25.4
215.9
11.5
8″
343
22.4
8
28.4
269.7
20.2
10″
406
25.4
12
30.2
323.9
29
12″
483
25.4
12
31.8
381
43.5
14″
533
28.4
12
35.1
412.8
58.5
16″
597
28.4
16
36.6
469.9
76.5
18″
635
31.8
16
39.6
533.4
93.5
20″
699
31.8
20
42.9
584.2
122.5
24″
813
35.1
20
47.8
692.2
185

 

ASME B16.5 Blind Flange Class 300 LBS Dimensions
NPS
D
L
Holes
B
G
Weight
1/2″
95
15.7
4
14.2
35.1
0.90
3/4″
117
19.1
4
15.7
42.9
1.20
1″
124
19.1
4
17.5
50.8
1.30
1-1/4″
133
19.1
4
19.1
63.5
1.70
1-1/2″
155
22.4
4
20.6
73.2
2.60
2″
165
19.1
8
22.1
91.9
3.20
2-1/2″
191
22.4
8
25.4
104.6
4.85
3″
210
22.4
8
28.4
127
6.75
3-1/2″
229
22.4
8
30.2
139.7
8.70
4″
254
22.4
8
31.8
157.2
11.50
5″
279
22.4
8
35.1
185.7
15.60
6″
318
22.4
12
36.6
215.9
20.86
8″
381
25.4
12
41.1
269.7
34.20
10″
445
28.4
16
47.8
323.9
53.50
12″
521
31.8
16
50.8
381
78.80
14″
584
31.8
20
53.8
412.8
105.00
16″
648
35.1
20
57.2
469.9
134.00
18″
711
35.1
24
60.5
533.4
172.00
20″
775
35.1
24
63.5
584.2
270.00
24″
914
41.1
24
69.9
692.2
339.60
ASME B16.5 Blind Flange Class 600 LBS Dimensions
NPS
D
L
Holes
B
G
Weight
1/2″
95
16
4
14.2
34.9
0.75
3/4″
117
19
4
15.7
42.9
1.26
1″
124
19
4
17.5
50.8
1.6
1-1/4″
133
19
4
20.6
63.5
2.22
1-1/2″
155
22
4
22.4
73
3.26
2″
165
19
8
25.4
92.1
4.14
2-1/2″
191
22
8
28.4
104.8
6.14
3″
210
22
8
31.8
127
8.52
3-1/2″
229
25
8
35.1
139.7
11.03
4″
254
25
8
35.1
157.2
13.85
5″
279
25
8
38.1
185.7
18.46
6″
318
25
12
41.1
215.9
25.55
8″
381
29
12
47.8
269.9
42.66
10″
445
32
16
55.8
323.8
66.59
12″
521
35
16
57.2
381
94.5
14″
584
35
20
60.5
412.8
124.75
16″
648
39
20
63.5
469.9
161.13
18″
710
39
24
66.5
533.4
202.85
20″
775
42
24
69.9
584.2
253.96
24″
914
48
24
76.2
692.2
385.25

 

ASMEB16.5BlindFlangeClass900LBSDimensions
NPS
D
L
Holes
B
G
Weight
1/2″
121
23
4
22.4
34.9
1.78
3/4″
130
23
4
25.4
42.9
2.39
1″
149
26
4
28.4
50.8
3.51
1-1/4″
159
26
4
28.4
63.5
4.11
1-1/2″
178
29
4
31.8
73
5.76
2″
216
26
8
38.1
92.1
10.02
2-1/2″
244
29
8
41.1
104.8
13.81
3″
241
26
8
38.1
127
13.00
3-1/2″
8
4″
292
32
8
44.5
157.2
22.12
5″
349
35
8
50.8
185.7
36.43
6″
381
32
12
55.6
215.9
47.37
8″
470
39
12
63.5
269.9
82.19
10″
546
39
16
69.9
323.8
122.09
12″
610
39
20
79.2
381
172.52
14″
641
42
20
85.9
412.8
205.59
16″
705
45
20
88.9
469.9
258.86
18″
787
51
20
101.6
533.4
366.53
20″
857
54
20
108
584.2
463.57
24″
1041
67
20
139.7
692.2
874.81

 

ASME B16.5 Blind Flange Class 1500 LBS Dimensions
NPS
D
L
Holes
B
G
Weight
1/2″
121
23
4
22.4
34.9
1.78
3/4″
130
23
4
25.4
42.9
2.39
1″
149
26
4
28.4
50.8
3.51
1-1/4″
159
26
4
28.4
63.5
4.11
1-1/2″
178
29
4
31.3
73
5.68
2″
216
26
8
38.1
92.1
10.02
2-1/2″
244
29
8
41.1
104.3
13.81
3″
267
32
8
47.3
127
19.03
3-1/2″
0
0
8
0
0
0
4″
311
35
8
53.8
157.2
29.8
5″
375
42
8
73.2
185.7
58.45
6″
394
39
12
82.6
215.9
71.58
8″
483
45
12
91.9
269.9
121.26
10″
584
51
12
108
323.8
210.41
12″
673
54
16
124
381
316.28
14″
749
61
16
133.4
412.8
419.11
16″
826
67
16
146.1
469.9
558.51
18″
914
74
16
162.1
533.4
758.48
20″
984
80
16
177.8
584.2
962.51
24″
1168
93
16
203.2
692.2
1554.5

 

ASME B16.5 Blind Flange Class 2500 LBS Dimensions
NPS
D
L
Holes
B
G
Weight
1/2″
133
23
4
30.2
34.9
2.91
3/4″
140
23
4
31.8
42.9
3.45
1″
159
26
4
35.1
50.8
4.91
1-1/4″
184
29
4
38.1
63.5
7.2
1-1/2″
203
32
4
44.5
73
10.23
2″
235
29
8
50.8
92.1
15.27
2-1/2″
267
32
8
57.2
104.8
22.36
3″
305
35
8
66.5
127
34.28
3-1/2″
0
0
8
0
0
0
4″
356
42
8
76.8
157.2
53.57
5″
419
48
8
91.5
185.7
88.98
6″
483
54
8
108
215.9
140.26
8″
552
54
12
127
269.9
211.9
10″
673
67
12
165.1
323.8
407.24
12″
762
74
12
184.2
381
586.22

 

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