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Threaded Flange


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Details of the introduction

Threaded flanges look very similar to Slip-On flanges but the main difference is that the threaded flange has been was bored out to match a specific pipe inside diameter. The backside of this center opening is then threaded with the relevant-sized tapered pipe thread.

Threaded Flanges are used for special circumstances with their main advantage being that they can be attached to the pipe without welding. Sometimes a seal weld is also used in conjunction with the threaded connection.

Although still available in most sizes and pressure ratings, screwed fittings today are used almost exclusively in smaller pipe sizes.

A threaded flange or fitting is not suitable for a pipe system with thin wall thickness, because cutting thread on a pipe is not possible. Thus, thicker wall thickness must be chosen at least equal to schedule 80 of ASME B36.10

Flange Type

Slip-On; Welding Neck, Socket Welding, Blind, Thread, Lap-joint; Long Welding Neck; Orifice; All flanges in Raised Face, Flat face and RTJ;

Material

ASTM A105; A350 LF2; A694 F42, F46, F52, F56,
A182 F12/F22/F5/F9/ F91;
A182 F304/F304L/F316/F316L, etc.

Size

1/2”~60”, as the clients’ requests;

Pressure

Class: 150 300 400 600 900 1500 2500; PN6,PN10,PN16,PN25,PN40;5K,10K,16K,20K,30K

Standard

ASME B16.5, ASME B16.47, MSS SP43, EN1092DIN, JIS;



Class 150 lb
Pipe Flange Data Hub Raised Face Drilling Data Unit Weight
Nominal
Pipe Size
A C D E F G H I J
Outside
Diameter
Overall
Diameter
Flange
Thickness
min
Overall
Length
Threaded length min Hub Diameter Face
Diameter
Number of Holes Bolt Hole
Diameter
Diameter
of Circle
of Holes
kg/
piece
in
mm
in
mm
in
mm
in
mm
in
mm
in
mm
in
mm
in
mm
in
mm
1/2 0.840
21.30
3.500
88.90
0.440
11.20
0.620
15.70
0.620
15.70
1.190
30.20
1.380
35.10
4 0.620 15.70 2.380 60.45 0.39
3/4 1.050
26.70
3.880
98.60
0.500
12.70
0.620
15.70
0.620
15.70
1.500
38.10
1.690
42.90
4 0.620 15.70 2.750 69.85 0.56
1 1.315
33.40
4.250
108.0
0.560
14.20
0.690
17.50
0.690
17.50
1.940
49.30
2.000
50.80
4 0.620 15.70 3.120 79.25 0.78
1 1/4 1.660
42.20
4.620
117.3
0.620
15.70
0.810
20.60
0.810
20.60
2.310
58.70
2.500
63.50
4 0.620 15.70 3.500 88.90 1.03
1 1/2 1.900
48.30
5.000
127.0
0.690
17.50
0.880
22.40
0.880
22.30
2.560
65.00
2.880
73.15
4 0.620 15.70 3.880 98.60 1.32
2 2.375
60.30
6.000
152.4
0.750
19.10
1.000
25.40
1.000
25.40
3.060
77.70
3.620
91.90
4 0.750 19.10 4.750 120.7 2.06
2 1/2 2.875
73.00
7.000
177.8
0.880
22.40
1.120
28.40
1.120
28.40
3.560
90.40
4.120
104.6
4 0.750 19.10 5.500 139.7 3.28
3 3.500
88.90
7.500
190.5
0.940
23.90
1.190
30.20
1.190
30.20
4.250
108.0
5.000
127.0
4 0.750 19.10 6.000 152.4 3.85
3 1/2 4.000
101.6
8.500
215.9
0.940
23.90
1.250
31.75
1.250
31.75
4.810
122.2
5.500
139.7
8 0.750 19.10 7.000 177.8 4.81
4 4.500
114.3
9.000
228.6
0.940
23.90
1.310
33.30
1.310
33.30
5.310
134.9
6.190
157.2
8 0.750 19.10 7.500 190.5 5.3
5 5.563
141.3
10.00
254.0
0.940
23.90
1.440
36.60
1.440
36.60
6.440
163.6
7.310
185.7
8 0.880 22.40 8.500 215.9 6.07
6 6.625
168.3
11.00
279.4
1.000
25.40
1.560
39.60
1.560
39.60
7.560
192.0
8.500
215.9
8 0.880 22.40 9.500 241.3 7.45
8 8.625
219.1
13.50
342.9
1.120
28.40
1.750
44.50
1.750
44.50
9.690
246.1
10.62
269.7
8 0.880 22.40 298.5 11.75 12.1
10 10.75
273.0
16.00
406.4
1.190
30.20
1.940
49.30
1.940
49.30
12.00
304.8
12.75
323.9
12 1.000 25.40 14.25 362.0 16.5
12 12.75
323.8
19.00
482.6
1.250
31.75
2.190
55.60
2.190
55.60
14.38
365.3
15.00
381.0
12 1.000 25.40 17.00 431.8 26.2
14 14.00
355.6
21.00
533.4
1.380
35.10
2.250
57.15
2.250
57.15
15.75
400.1
16.25
412.7
12 1.120 28.40 18.75 476.3 34.6
16 16.00
406.4
23.50
596.9
1.440
36.60
2.500
63.50
2.500
63.50
18.00
457.2
18.50
469.9
16 1.120 28.40 21.25 539.8 44.8
18 18.00
457.2
25.00
635.0
1.560
39.60
2.690
68.30
2.690
68.30
19.88
505.0
21.00
533.4
16 1.250 31.75 22.75 577.9 48.9
20 20.00
508.0
27.50
698.5
1.690
42.90
2.880
73.15
2.880
73.15
22.00
558.8
23.00
584.2
20 1.250 31.75 25.00 635.0 61.9
24 24.00
609.6
32.00
812.8
1.880
47.80
3.250
82.60
3.250
82.60
26.12
663.4
27.25
692.2
20 1.380 35.10 29.50 749.3 86.9

Class 300 lb
Pipe Flange Data Hub Raised Face Drilling Data Unit Weight
Nominal
Pipe Size
A B C D E F G H I J
Outside
Diameter
Overall
Diameter
Counterbore
min
Flange
Thickness
min
Overall
Length
Threaded
length min
Hub Diameter Face
Diameter
Number
of Holes
Bolt Hole
Diameter
Diameter
of Circle
of Holes
kg/
piece
in
mm
in
mm
in
mm
in
mm
in
mm
in
mm
in
mm
in
mm
in
mm
in
mm
1/2 0.840
21.30
3.750
95.20
0.930
23.60
0.560
14.20
0.880
22.30
0.620
15.70
1.500
38.10
1.380
35.00
4 0.620 15.70 2.620 66.55 0.64
3/4 1.050
26.70
4.620
117.3
1.140
29.00
0.620
15.70
1.000
25.40
0.620
15.70
1.880
47.70
1.690
42.90
4 0.750 19.00 3.250 82.50 1.12
1 1.315
33.40
4.880
123.9
1.410
35.80
0.690
17.50
1.060
26.90
0.690
17.50
2.120
53.80
2.000
50.80
4 0.750 19.00 3.500 88.90 1.36
1 1/4 1.660
42.20
5.250
133.3
1.750
44.40
0.750
19.00
1.060
26.90
0.810
20.60
2.500
63.50
2.500
63.50
4 0.750 19.00 3.880 98.50 1.68
1 1/2 1.900
48.30
6.120
155.4
1.980
50.50
0.810
20.60
1.190
30.20
0.880
22.30
2.750
69.85
2.880
73.15
4 0.880 22.30 4.500 114.3 2.49
2 2.375
60.30
6.500
165.1
2.500
63.50
0.880
22.30
1.310
33.20
1.120
28.40
3.310
84.00
3.620
91.90
8 0.750 19.00 5.000 127.0 2.87
2 1/2 2.875
73.00
7.500
190.5
3.000
76.20
1.000
25.40
1.500
38.10
1.250
31.70
3.940
100.0
4.120
104.6
8 0.880 22.30 5.880 149.3 4.32
3 3.500
88.90
8.250
209.5
3.630
92.20
1.120
28.40
1.690
42.90
1.250
31.70
4.620
117.3
5.000
127.0
8 0.880 22.30 6.620 168.1 5.85
3 1/2 4.000
101.6
9.000
228.6
4.130
104.9
1.190
30.20
1.750
44.40
1.440
36.50
5.250
133.3
5.500
139.7
8 0.880 22.30 7.250 184.1 7.34
4 4.500
114.3
10.00
254.0
4.630
117.6
1.250
31.70
1.880
47.70
1.440
36.50
5.750
146.0
6.190
157.2
8 0.880 22.30 7.880 200.1 9.61
5 5.563
141.3
11.00
279.4
5.690
144.5
1.380
35.00
2.000
50.80
1.690
42.90
7.000
177.8
7.310
185.7
8 0.880 22.30 9.250 234.9 12.3
6 6.625
168.3
12.50
317.5
6.750
171.4
1.440
36.50
2.060
52.30
1.810
45.90
8.120
206.2
8.500
215.9
12 0.880 22.30 10.62 269.7 15.6
8 8.625
219.1
15.00
381.0
8.750
222.2
1.620
41.10
2.440
61.90
2.000
50.80
10.25
260.3
10.62
269.7
12 1.000 25.40 13.00 330.2 24.2
10 10.75
273.0
17.50
444.5
10.88
276.3
1.880
47.70
2.620
66.55
2.190
55.60
12.62
320.5
12.75
323.9
16 1.120 28.40 15.25 387.3 34.1
12 12.75
323.8
20.50
520.7
12.94
328.7
2.000
50.80
2.880
73.15
2.380
60.45
14.75
374.6
15.00
381.0
16 1.250 31.70 17.75 450.8 49.8
14 14.00
355.6
23.00
584.2
14.19
360.4
2.120
53.80
3.000
76.20
2.500
63.50
16.75
425.4
16.25
412.7
20 1.250 31.70 20.25 514.3 69.9
16 16.00
406.4
25.50
647.7
16.19
411.2
2.250
57.15
3.250
82.50
2.690
68.30
19.00
482.6
18.50
469.9
20 1.380 35.00 22.50 571.5 88.1
18 18.00
457.2
28.00
711.2
18.19
462.0
2.380
60.45
3.500
88.90
2.750
69.85
21.00
533.4
21.00
533.4
24 1.380 35.00 24.75 628.6 109
20 20.00
508.0
30.50
774.7
20.19
512.8
2.500
63.50
3.750
95.2
2.880
73.15
23.12
587.2
23.00
584.2
24 1.380 35.00 27.00 685.8 134
24 24.00
609.6
36.00
914.4
24.19
614.4
2.750
69.85
4.190
106.4
3.250
82.50
27.62
701.5
27.25
692.2
24 1.620 41.10 32.00 812.8 201

Class 400 lb
Pipe Flange Data Hub Raised Face Drilling Data Unit Weight
Nominal
Pipe Size
A B C D E F G H I J
Outside
Diameter
Overall
Diameter
Counterbore
min
Flange
Thickness
min
Overall
Length
Threaded
length min
Hub Diameter Face
Diameter
Number
of Holes
Bolt Hole
Diameter
Diameter
of Circle
of Holes
kg/
piece
in
mm
in
mm
in
mm
in
mm
in
mm
in
mm
in
mm
in
mm
in
mm
in
mm
1/2 0.840
21.30
3.750
95.30
0.930
23.60
0.560
14.20
0.880
22.40
0.620
15.70
1.500
38.10
1.380
35.10
4 0.620 15.70 2.620 66.55 0.74
3/4 1.050
26.70
4.620
117.3
1.140
29.00
0.620
15.70
1.000
25.40
0.620
15.70
1.880
47.80
1.690
42.90
4 0.750 19.10 3.250 82.60 1.27
1 1.315
33.40
4.880
124.0
1.410
35.80
0.690
17.50
1.060
26.90
0.690
17.50
2.120
53.80
2.000
50.80
4 0.750 19.10 3.500 88.90 1.52
1 1/4 1.660
42.20
5.250
133.4
1.750
44.50
0.810
20.60
1.120
28.40
0.810
20.60
2.500
63.50
2.500
63.50
4 0.750 19.10 3.880 98.60 2.03
1 1/2 1.900
48.30
6.120
155.4
1.990
50.50
0.880
22.40
1.250
31.75
0.880
22.40
2.750
69.85
2.880
73.15
4 0.880 22.40 4.500 114.3 2.96
2 2.375
60.30
6.500
165.1
2.500
63.50
1.000
25.40
1.440
36.60
1.120
28.40
3.310
84.10
3.620
91.90
8 0.750 19.10 5.000 127.0 3.62
2 1/2 2.875
73.00
7.500
190.5
3.000
76.20
1.120
28.40
1.620
41.10
1.250
31.75
3.940
100.1
4.120
104.6
8 0.880 22.40 5.880 149.4 5.28
3 3.500
88.90
8.250
209.6
3.630
92.20
1.250
31.75
1.810
46.00
1.380
35.10
4.620
117.3
5.000
127.0
8 0.880 22.40 6.620 168.1 7
3 1/2 4.000
101.6
9.000
228.6
413.0
104.9
1.380
35.10
1.940
49.30
1.560
39.60
5.250
133.4
5.500
139.7
8 1.000 25.40 7.250 184.2 8.84
4 4.500
114.3
10.00
254.0
4.630
117.6
1.380
35.10
2.000
50.80
1.440
36.60
5.750
146.1
6.190
157.2
8 1.000 25.40 7.880 200.2 11.1
5 5.563
141.3
11.00
279.4
5.690
144.5
1.500
38.10
2.120
53.80
1.690
42.90
7.000
177.8
7.310
185.7
8 1.000 25.40 9.250 235.0 13.9
6 6.625
168.3
12.50
317.5
6.750
171.5
1.620
41.10
2.250
57.15
1.810
46.00
8.120
206.2
8.500
215.9
12 1.000 25.40 10.62 269.7 18.3
8 8.625
219.1
15.00
381.0
8.750
222.3
1.880
47.80
2.690
68.30
2.000
50.80
10.25
260.4
10.62
269.7
12 1.120 28.40 13.00 330.2 28.6
10 10.75
273.0
17.50
444.5
10.88
276.4
2.120
53.80
2.880
73.15
2.190
55.60
12.62
320.5
12.75
323.9
16 1.250 31.75 15.25 387.4 39.2
12 12.75
323.8
20.50
520.7
12.94
328.7
2.250
57.15
3.120
79.25
2.380
60.45
14.75
374.7
15.00
381.0
16 1.380 35.10 17.75 450.9 57
14 14.00
355.6
23.00
584.2
14.19
360.4
2.380
60.45
3.310
84.10
2.500
63.50
16.75
425.5
16.25
412.8
20 1.380 35.10 20.25 514.4 79.1
16 16.00
406.4
25.50
647.7
16.19
411.2
2.500
63.50
3.690
93.70
2.690
68.30
19.00
482.6
18.50
469.9
20 1.500 38.10 22.50 571.5 101
18 18.00
457.2
28.00
711.2
18.19
462.0
2.620
66.55
3.880
98.60
2.750
69.85
21.00
533.4
21.00
533.4
24 1.500 38.10 24.75 628.7 123
20 20.00
508.0
30.50
774.7
20.19
512.8
2.750
69.85
4.000
101.6
2.880
73.15
23.12
587.2
23.00
584.2
24 1.620 41.10 27.00 685.8 146
24 24.00
609.6
36.00
914.4
24.19
614.4
3.000
76.20
4.500
114.3
3.250
82.60
27.62
701.5
27.25
692.2
24 1.880 47.80 32.00 812.8 219

Class 600 lb
Pipe Flange Data Hub Raised Face Drilling Data Unit Weight
Nominal
Pipe Size
A B C D E F G H I J
Outside
Diameter
Overall
Diameter
Counterbore
min
Flange
Thickness
min
Overall
Length
Threaded
length min
Hub Diameter Face
Diameter
Number
of Holes
Bolt Hole
Diameter
Diameter
of Circle
of Holes
kg/
piece
in
mm
in
mm
in
mm
in
mm
in
mm
in
mm
in
mm
in
mm
in
mm
in
mm
1/2 0.840
21.30
3.750
95.20
0.930
23.60
0.560
14.20
0.880
22.40
0.620
15.70
1.500
38.10
1.380
35.10
4 0.620 15.70 2.620 66.55 0.74
3/4 1.050
26.70
4.620
117.3
1.140
29.00
0.620
15.70
1.000
25.40
0.620
15.70
1.880
47.80
1.690
42.90
4 0.750 19.10 3.250 82.60 1.27
1 1.315
33.40
4.880
124.0
1.410
35.80
0.690
17.50
1.060
26.90
0.690
17.50
2.120
53.80
2.000
50.80
4 0.750 19.10 3.500 88.90 1.52
1 1/4 1.660
42.20
5.250
133.4
1.750
44.50
0.810
20.60
1.120
28.40
0.810
20.60
2.500
63.50
2.500
63.50
4 0.750 19.10 3.880 98.60 2.03
1 1/2 1.900
48.30
6.120
155.4
1.990
50.50
0.880
22.40
1.250
31.75
0.880
22.40
2.750
69.85
2.880
73.15
4 0.880 22.40 4.500 114.3 2.96
2 2.375
60.30
6.500
165.1
2.500
63.50
1.000
25.40
1.440
36.60
1.120
28.40
3.310
84.10
3.620
91.90
8 0.750 19.10 5.000 127.0 3.62
2 1/2 2.875
73.00
7.500
190.5
3.000
76.20
1.120
28.40
1.620
41.10
1.250
31.75
3.940
100.1
4.120
104.6
8 0.880 22.40 5.880 149.4 5.28
3 3.500
88.90
8.250
209.6
3.630
92.20
1.250
31.75
1.810
46.00
1.380
35.10
4.620
117.3
5.000
127.0
8 0.880 22.40 6.620 168.1 7
3 1/2 4.000
101.6
9.000
228.6
4.130
104.9
1.380
35.10
1.940
49.30
1.560
39.60
5.250
133.4
5.500
139.7
8 1.000 25.40 7.250 184.2 8.84
4 4.500
114.3
10.75
273.1
4.630
117.6
1.500
38.10
2.120
53.80
1.620
41.10
6.000
152.4
6.190
157.2
8 1.000 25.40 8.500 215.9 14.5
5 5.563
141.3
13.00
330.2
5.690
144.5
1.750
44.50
2.380
60.45
1.880
47.80
7.440
189.0
7.310
185.7
8 1.120 28.40 10.50 266.7 24.4
6 6.625
168.3
14.00
355.6
6.750
171.5
1.880
47.80
2.620
66.55
2.000
50.80
8.750
222.3
8.500
215.9
12 1.120 28.40 292.1 11.50 28.7
8 8.625
219.1
16.50
419.1
8.750
222.3
2.190
55.60
3.000
76.20
2.250
57.15
10.75
273.1
10.62
269.7
12 1.250 31.75 13.75 349.3 43.4
10 10.75
273.0
20.00
508.0
10.88
276.4
2.500
63.50
3.380
85.90
2.560
65.00
13.50
342.9
12.75
323.9
16 1.380 35.10 17.00 431.8 70.3
12 12.75
323.8
22.00
558.8
12.94
328.7
2.620
66.55
3.620
91.90
2.750
69.85
15.75
400.1
15.00
381.0
20 1.380 35.10 19.25 489.0 84.2
14 14.00
355.6
23.75
603.3
14.19
360.4
2.750
69.85
3.690
93.70
2.880
73.15
17.00
431.8
16.25
412.8
20 1.500 38.10 20.75 527.1 98.7
16 16.00
406.4
27.00
685.8
16.19
411.2
3.000
76.20
4.190
106.4
3.060
77.70
19.50
495.3
18.50
469.9
20 1.620 41.10 23.75 603.3 142
18 18.00
457.2
29.25
743.0
18.19
462.0
3.250
82.60
4.620
117.3
3.120
79.25
21.50
546.1
21.00
533.4
20 1.750 44.50 25.75 654.1 173
20 20.00
508.0
32.00
812.8
20.19
512.8
3.500
88.90
5.000
127.0
3.250
82.60
24.00
609.6
23.00
584.2
24 1.750 44.50 28.50 723.9 220
24 24.00
609.6
37.00
939.8
24.19
614.4
4.000
101.6
5.500
139.7
3.620
91.90
28.25
717.6
27.25
692.2
24 2.000 50.80 33.00 838.2 312

Class 900 lb
Pipe Flange Data Hub Raised Face Drilling Data Unit Weight
Nominal
Pipe Size
A B C D E F G H I J
Outside
Diameter
Overall
Diameter
Counterbore
min
Flange
Thickness
min
Overall
Length
Threaded
length min
Hub Diameter Face
Diameter
Number
of Holes
Bolt Hole
Diameter
Diameter
of Circle
of Holes
kg/
piece
in
mm
in
mm
in
mm
in
mm
in
mm
in
mm
in
mm
in
mm
in
mm
in
mm
1/2 0.840
21.30
4.750
120.6
0.930
23.60
0.880
22.30
1.250
31.70
0.880
22.30
1.500
38.10
1.380
35.10
4 0.880 22.30 3.250 82.50 1.74
3/4 1.050
26.70
5.120
130.0
1.140
29.00
1.000
25.40
1.380
35.00
1.000
25.40
1.750
44.40
1.690
42.90
4 0.880 22.30 3.500 88.90 2.34
1 1.315
33.40
5.880
149.3
1.410
35.80
1.120
28.40
1.620
41.10
1.120
28.40
2.060
52.30
2.000
50.80
4 1.000 25.40 4.000 101.6 3.44
1 1/4 1.660
42.20
6.250
158.7
1.750
44.40
1.120
28.40
1.620
41.10
1.190
30.20
2.500
63.50
2.500
63.50
4 1.000 25.40 4.380 111.2 3.91
1 1/2 1.900
48.30
7.000
177.8
1.990
50.50
1.250
31.70
1.750
44.50
1.250
31.70
2.750
69.85
2.880
73.15
4 1.120 28.40 4.880 123.9 5.36
2 2.375
60.30
8.500
215.9
2.500
63.50
1.500
38.10
2.250
57.15
1.500
38.10
4.120
104.6
3.620
91.90
8 1.000 25.40 6.500 165.1 9.85
2 1/2 2.875
73.00
9.620
244.3
3.000
76.20
1.620
41.10
2.500
63.50
1.880
47.70
4.880
123.9
4.120
104.6
8 1.120 28.40 7.500 190.5 13.7
3 3.500
88.90
9.500
241.3
3.630
92.20
1.500
38.10
2.120
53.80
1.620
41.10
5.000
127.0
5.000
127.0
8 1.000 25.40 7.500 190.5 11.6
4 4.500
114.3
11.50
292.1
4.630
117.6
1.750
44.40
2.750
69.85
1.880
47.80
6.250
158.7
6.190
157.2
8 1.250 31.70 9.250 234.9 19.7
5 5.563
141.3
13.75
349.2
5.690
144.5
2.000
50.80
3.120
79.25
2.120
53.80
7.500
190.5
7.310
185.7
8 1.380 35.00 279.4 11.00 31.9
6 6.625
168.3
15.00
381.0
6.750
171.4
2.190
55.60
3.380
85.80
2.250
57.15
9.250
234.9
8.500
215.9
12 1.250 31.70 12.50 317.5 41.1
8 8.625
219.1
18.50
469.9
8.750
222.2
2.500
63.50
4.000
101.6
2.500
63.50
11.75
298.4
10.62
269.7
12 1.500 38.10 15.50 393.7 70.7
10 10.75
273.0
21.50
546.1
10.88
276.3
2.750
69.85
4.250
107.9
2.810
71.40
14.50
368.3
12.75
323.9
16 1.500 38.10 18.50 469.9 101
12 12.75
323.8
24.00
609.6
12.94
328.7
3.120
79.40
4.620
117.3
3.000
76.20
16.50
419.1
15.00
381.0
20 1.500 38.10 21.00 533.4 133
14 14.00
355.6
25.25
641.3
14.19
360.4
3.380
85.70
5.120
130.0
3.250
82.50
17.75
450.8
16.25
412.7
20 1.620 41.10 22.00 558.8 153
16 16.00
406.4
27.75
704.8
16.19
411.2
3.500
88.90
5.250
133.3
3.380
85.90
20.00
508.0
18.50
469.9
20 1.750 44.40 24.25 618.9 185
18 18.00
457.2
31.00
787.4
18.19
462.0
4.000
101.6
6.000
152.4
3.500
88.90
22.25
565.1
21.00
533.4
20 2.000 50.80 27.00 685.8 258
20 20.00
508.0
33.75
857.2
20.19
512.8
4.250
107.9
6.250
158.7
3.620
91.90
24.50
622.3
23.00
584.2
20 2.120 53.80 29.50 749.3 317
24 24.00
609.6
41.00
1041.4
24.19
614.4
5.500
139.7
8.000
203.2
4.000
101.6
29.50
749.3
27.25
692.2
20 2.620 66.55 35.50 901.7 606

Class 1500 lb
Pipe Flange Data Hub Raised Face Drilling Data Unit Weight
Nominal
Pipe Size
A B C D E F G H I J
Outside
Diameter
Overall
Diameter
Counterbore
min
Flange
Thickness
min
Overall
Length
Threaded
length min
Hub Diameter Face
Diameter
Number
of Holes
Bolt Hole
Diameter
Diameter
of Circle
of Holes
kg/
piece
in
mm
in
mm
in
mm
in
mm
in
mm
in
mm
in
mm
in
mm
in
mm
in
mm
1/2 0.840
21.30
4.750
120.6
0.930
23.60
0.880
22.30
1.250
31.70
0.880
22.30
1.500
38.10
1.380
35.00
4 0.880 22.30 3.250 82.50 1.74
3/4 1.050
26.70
5.120
130.0
1.140
29.00
1.000
25.40
1.380
35.00
1.000
25.40
1.750
44.40
1.690
42.90
4 0.880 22.30 3.500 88.90 2.34
1 1.315
33.40
5.880
149.3
1.410
35.80
1.120
28.40
1.620
41.10
1.120
28.40
2.060
52.30
2.000
50.80
4 1.000 25.40 4.000 101.6 3.44
1 1/4 1.660
42.20
6.250
158.7
1.750
44.40
1.120
28.40
1.620
41.10
1.190
30.20
2.500
63.50
2.500
63.50
4 1.000 25.40 4.380 111.2 3.91
1 1/2 1.900
48.30
7.000
177.8
1.990
50.50
1.250
31.70
1.750
44.50
1.250
31.70
2.750
69.85
2.880
73.15
4 1.120 28.40 4.880 123.9 5.36
2 2.375
60.30
8.500
215.9
2.500
63.50
1.500
38.10
2.250
57.15
1.500
38.10
4.120
104.6
3.620
91.90
8 1.000 25.40 6.500 165.1 9.85
2 1/2 2.875
73.00
9.620
244.3
3.000
76.20
1.620
41.10
2.500
63.50
1.880
47.70
4.880
123.9
4.120
104.6
8 1.120 28.40 7.500 190.5 13.7


Class 2500 lb
Pipe Flange Data Hub Raised Face Drilling Data Unit Weight
Nominal
Pipe Size
A B C D E F G H I J
Outside
Diameter
Overall
Diameter
Counterbore
min
Flange
Thickness
min
Overall
Length
Threaded
length min
Hub Diameter Face
Diameter
Number
of Holes
Bolt Hole
Diameter
Diameter
of Circle
of Holes
kg/
piece
in
mm
in
mm
in
mm
in
mm
in
mm
in
mm
in
mm
in
mm
in
mm
in
mm
1/2 0.840
21.30
5.250
133.4
0.930
23.60
1.190
30.20
1.560
39.60
1.120
28.40
1.690
42.90
1.380
35.10
4 0.880 22.40 3.500 88.90 2.95
3/4 1.050
26.70
5.500
139.7
1.140
29.00
1.250
31.75
1.690
42.90
1.250
31.75
2.000
50.80
1.690
42.90
4 0.880 22.40 3.750 95.30 3.44
1 1.315
33.40
6.250
158.8
1.410
35.80
1.380
35.10
1.880
47.80
1.380
35.10
2.250
57.15
2.000
50.80
4 1.000 25.40 4.250 108.0 4.82
1 1/4 1.660
42.20
7.250
1.842
1.750
44.50
1.500
38.10
2.060
52.30
1.500
38.10
2.880
73.15
2.500
63.50
4 1.120 28.40 5.120 130.0 7.14
1 1/2 1.900
48.30
8.000
203.2
1.990
50.50
1.750
44.50
2.380
60.45
1.750
44.50
3.120
79.25
2.880
73.15
4 1.250 31.75 5.750 146.1 10
2 2.375
60.30
9.250
235.0
2.500
63.50
2.000
50.80
2.750
69.85
2.000
50.80
3.750
95.30
3.620
91.90
8 1.120 28.40 6.750 171.5 14.8
2 1/2 2.875
73.00
10.50
266.7
3.000
76.20
2.250
57.15
3.120
79.25
2.250
57.15
4.500
114.3
4.120
104.6
8 1.250 31.75 7.750 196.9 21.5


Notes
- The thread conforms to ASME B1.20.1 NTP threads as described in Section 10. (The only exceptions are small male and female plain face threaded flanges which use NPSL recount threads.)
- Class 150 threaded flanges are made without a counterbore. Threads are chamfered to the major diameter (approx.) at an angle of 45° (approx.) at the back of the flange.
- Weights are based on manufacturer’s data and are approximate.
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