SOCKETWELDING FLANGE

THREADED FLANGE

BLIND FLANGE

WELDING NECK BLIND FLANGE

300#

Common
Dimensions

Drilling

Different
Dimensions

Approx. Weight

NominalPipe
Size

Dimensions
In

D

G

M

B

No

L

K

J

E

C

F

V

A

H

N

O

T

U

R

Slip On,
Socketwelding, Threaded
Flanges

Welding Neck Flanges

Lap
Joint
Flanges

Blind
Flanges

1/2"

inch
mm

31/2
88.9

13/8
34.9

13/16
30.2

7/16
11.1

4

5/8
15.9

23/8
60.3

0.62
15.7

0.88
22.4

0.62
15.7

0.90
22.9

0.84
21.3

17/8
47.6

5/8
15.9

5/8
15.9

5/8
15.9

3/8
9.52

1/8
3.18

1
0.5

2
0.9

1
0.5

1
0.5

3/4"

inch
mm

45/8
117

111/16
42.9

17/8
47.6

5/8
15.9

4

3/4
19.0.

31/4
82.6

0.82
20.8

1.14
29.0

1.09
27.7

0.82
20.8

1.11
28.2

1.05
26.7

21/4
57.2

1
25.4

1
25.4

5/8
15.9

7/16
11.1

1/8
3.18

3
1.4

3
1.4

3
1.4

3
1.4

1"

inch
mm

47/8
124

2
50.8

21/8
54.0

11/16
17.5

4

3/4
19.0

31/2
88.9

1.05
26.7

1.41
35.8

1.36
34.5

1.05
26.7

1.38
35.1

1.32
33.4

27/16
61.9

11/16
27.0

11/16
27.0

11/16
17.5

1/2
12.7

1/8
3.18

3
1.4

4
1.8

3
1.4

3
1.4

1 1/4"

inch
mm

51/4
133

21/2
63.5

21/2
63.5

3/4
19.0

4

3/4
19.0

37/8
98.4

1.38
35.1

1.75
44.4

1.70
43.2

1.38
35.1

1.72
43.7

1.66
42.2

29/16
65.1

11/16
27.0

11/16
27.0

13/16
20.6

9/16
14.3

3/16
4.76

4
1.8

5
2.3

4
1.8

4
1.8

1 1/2"

inch
mm

61/8
156

27/8
73.0

23/4
69.8

13/16
20.6

4

7/8
22.2

41/2
114

1.61
40.9

1.99
50.5

1.95
49.5

1.61
40.9

1.97
50.0

1.90
48.3

211/16
68.3

13/16
30.2

13/16
30.2

7/8
22.2

5/8
15.9

1/4
635

6
2.7

7
3.2

6
2.7

6
2.7

2"

inch
mm

61/2
165

35/8
92.1

35/16
84.1

7/8
22.2

8

3/4
19.0

5
127

2.07
52.6

2.50
63.5

2.44
62.0

2.07
52.6

2.46
62.5

2.38
60.3

23/4
69.8

15/16
33.3

15/16
33.3

11/8
28.6

11/16
17.5

5/16
7.94

7
3.2

9
4.1

7
3.2

8
3.6

2 1/2"

inch
mm

71/2
190

41/8
105

315/16
100

1
25.4

8

7/8
22.2

57/8
149

2.47
62.7

3.0
76.2

2.94
74.7

2.47
62.7

2.97
75.4

2.88
73.0

3
76.2

11/2
38.1

11/2
38.1

11/4
31.8

3/4
19.0

5/16
7.94

10
4.5

12
5.4

10
4.5

12
5.4

3"

inch
mm

81/4
210

5
127

45/8
117

11/8
28.6

8

7/8
22.2

65/8
168

3.07
78.0

3.63
92.2

3.57
90.7

3.07
78.0

3.60
91.4

3.50
88.9

31/8
79.4

111/16
42.9

111/16
42.

11/4
31.8

13/16
20.6

3/8
9.52

13
5.9

15
6.8

13
5.9

16
7.3

3 1/2"

inch
mm

9
229

51/2
140

51/4
133

13/16
30.2

8

7/8
22.2

71/4
184

3.55
90.2

4.13
105

4.07
103

3.55
90.2

4.10
104

4.00
102

33/16
81.0

13/4
44.4

13/4
44.4

17/16
36.5

7/8
22.2

3/8
9.52

17
7.7

18
8.2

17
7.7

21
9.5

4"

inch
mm

10
254

63/16
157

53/4

146

11/4
31.8

8

7/8

22/2

77/8
200

4.03
102

4.63
118

4.57
116

4.03
102.4

4.60
117

4.50
114

33/8
85.7

17/8
47.6

17/8
47.6

17/16
36.5

15/6
23.8

7/16
11.1

22
10.0

25
11.3

22
10.0

27
12.2

5"

inch
mm

11
279

75/16
186

7
178

91/4
235

8

7/8
22.2

91/4
235

5.05
128

5.69
145

5.66
144

5.69
145

5.56
141

37/8
98.4

2
50.8

2
50.8

111/16
42.9

7/16
11.1

28
12.7

32
14.5

28
12.7

35
15.9

6"

inch
mm

121/2
318

81/2
216

81/8
206

17/16
36.5

12

7/8
22.2

105/8
270

6.07
154

6.75
171

6.72
171

6.75
171

6.62
168

37/8
98.4

21/16
52.4

21/16
52.4

113/16
46

1/2
12.7

39
17.7

42
19.0

39
17.7

50
22.7

8"

inch
mm

15
381

105/8
270

101/4
260

15/8
41.3

12

1
25.4

13
330

7.98
203

8.75
222

8.72
221

8.75
222

8.62
219

43/8
111

27/16
61.9

27/16
61.9

2
50.8

1/2
12.7

58
26.3

67
30.4

58
26.3

81
36.7

10"

inch
mm

171/2
444

123/4
324

125/8
321

17/8
47.6

16

11/8
28.6

151/4
387

10.02
255

10.88
276

10.88
276

10.92
277

10.75
273

45/8
117

25/8
66.7

33/4
95.2

23/16

55.6

1/2
12.7

81
36.7

91
41.3

91
41.3

125
56.7

12"

inch
mm

201/2
521

15
381

143/4
375

2
50.8

16

11/4
31.8

173/4
451

12.00
305

12.94
329

12.8
327

12.92
328

12.75
324

51/8
130

27/8
73

4
102

23/8
60.3

1/2
12.7

115
52.2

140
63.5

140
63.5

185
83.9

14"

inch
mm

23
584

161/4
413

163/4
425

21/8
54

20

11/4
31.8

201/4
524

13.29
336.5

14.19
360

14.14
359

14.18
360

14.00
356

55/8
143

3
76.2

43/8
111

21/2
63.5

1/2
12.7

165
74.8

180
81.6

190
86.2

250
113

16"

inch
mm

251/2
648

181/2
470

19
483

21/4
57.2

20

13/8
34.9

221/2
572

15.25
387

16.19
411

16.16
410

16.19
411

16.00
406

53/4
146

31/4
82.6

43/4
121

211/16
68.3

1/2
12.7

190
86.2

250
113

250
113

295
134

18"

inch
mm

28
711

21
533

21
533

23/8
60.3

24

13/8
34.9

243/4
629

17.25
438

18.19
462

18.18
462

18.20
462

18.00
457

61/4
159

31/2
88.9

51/8
130

23/4
69.8

1/2
12.7

250
113

320
145

295
134

395
179

20"

inch
mm

301/2
775

23
584

231/8
587

21/2
63.5

24

13/8
34.9

27
686

19.25
489

20.19
513

20.20
513

20.25
514

20.00
508

63/8
162

33/4
95.2

51/2
140

27/8
73.0

1/2
12.7

315
143

400
181

370
168

505
229

24"

inch
mm

36
914

271/4
692

275/8
702

23/4
69.8

24

15/8
41.3

32
813

23.25
590.5

24.19
614

24.25
616

24.25
616

24.00
610

65/8
168

43/16
106

6
152

31/4
82.6

1/2
12.7

475
215

580
263

550
249

790
358