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| ANSI
B16.36 FORGED FLANGES |
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Unit: mm |
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| Class
900-1500 Orifice Flanges |
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| Nominal Pipe Size |
Outside Diam of Flange |
Thickness of Flange (1) |
Diam of Hub at base |
Diam of raised face |
Diam of Hub Bevel |
Length thru Hub (1) |
Bore (B) |
Pitch Diam of Ring and Groove |
Ring Number |
Depth of jack screw slot |
jack screw size |
Drilling Template |
Nominal Pipe size |
| Raised Face |
Ring Joint |
Welding Neck |
Slip- on & threaded |
Welding Neck |
Slip- on |
Raised face |
Ring
Joint |
Raised
face (inch) |
Ring
Joint (inch) |
Diam of
bolt circle |
Number
of Bolts |
Diam. Of
Stud Bolts (inch) |
Diam. Of
Bolt Holes |
Length
of stud bolts |
| Raised Face |
Ring joint |
Raised Face |
Ring joint |
Raised
face |
Ring
Joint |
| D |
X |
G |
A |
P |
| CLASS 900 |
| 3 |
241 |
38.1 |
31.8 |
127.0 |
127.0 |
88.9 |
101.6 |
101.6 |
53.8 |
53.8 |
to be specified by purchaser |
90.7 |
123.8 |
R31 |
9.7 |
15.7 |
¾×3.50 |
¾×4.00 |
190.5 |
8 |
8-Jul |
25.4 |
125.4 |
165.1 |
3 |
| 4 |
292 |
44.5 |
44.5 |
158.8 |
157.2 |
114.3 |
114.3 |
114.3 |
69.9 |
69.9 |
116.1 |
149.2 |
R37 |
9.7 |
15.7 |
¾×3.50 |
¾×4.50 |
235.0 |
8 |
1 1/8 |
31.8 |
177.8 |
190.5 |
4 |
| 5 |
349 |
50.8 |
50.8 |
190.5 |
185.7 |
141.2 |
127.0 |
127.0 |
79.2 |
79.2 |
143.8 |
181.0 |
R41 |
9.7 |
15.7 |
¾×3.50 |
¾×4.50 |
279.4 |
8 |
1 ¼ |
35.1 |
190.5 |
203.2 |
5 |
| 6 |
381 |
55.6 |
55.6 |
235.0 |
215.9 |
168.4 |
139.7 |
139.7 |
85.9 |
85.9 |
170.7 |
211.1 |
R45 |
15.7 |
22.4 |
1×4.50 |
1×4.75 |
317.5 |
12 |
1 1/8 |
31.8 |
196.9 |
209.6 |
6 |
| 8 |
470 |
63.5 |
63.5 |
298.5 |
269.7 |
219.2 |
162.1 |
162.1 |
101.6 |
101.6 |
221.5 |
269.9 |
R49 |
15.7 |
22.4 |
1×4.50 |
1×5.00 |
393.7 |
12 |
1 3/8 |
38.1 |
228.6 |
241.3 |
8 |
| 10 |
546 |
69.9 |
69.9 |
368.3 |
323.9 |
273.1 |
184.2 |
184.2 |
108.0 |
108.0 |
276.4 |
323.9 |
R53 |
15.7 |
22.4 |
1×4.50 |
1×5.25 |
469.9 |
16 |
1 3/8 |
38.1 |
241.3 |
254.0 |
10 |
| 12 |
610 |
79.2 |
79.2 |
419.1 |
381.0 |
323.9 |
200.2 |
200.2 |
117.3 |
117.3 |
327.2 |
381.0 |
R57 |
15.7 |
22.4 |
1×4.50 |
1×5.50 |
533.4 |
20 |
1 3/8 |
38.1 |
260.4 |
273.1 |
12 |
| 14 |
641 |
85.9 |
|
450.9 |
412.8 |
355.6 |
212.9 |
|
|
|
558.8 |
20 |
1 ½ |
41.1 |
279.4 |
|
14 |
| 16 |
705 |
88.9 |
508.0 |
469.9 |
406.4 |
215.9 |
616.0 |
20 |
1 5/8 |
44.5 |
292.1 |
16 |
| 18 |
787 |
101.6 |
565.2 |
533.4 |
457.2 |
228.6 |
685.8 |
20 |
1 7/8 |
50.8 |
330.2 |
18 |
| 20 |
857 |
108.0 |
622.3 |
584.2 |
508.0 |
247.7 |
749.3 |
20 |
2 |
53.8 |
355.6 |
20 |
| 24 |
1041 |
139.7 |
749.3 |
692.2 |
609.6 |
292.1 |
901.7 |
20 |
2 ½ |
66.5 |
444.5 |
24 |
| CLASS 1500 |
| 1 |
149 |
38.1 |
38.1 |
52.3 |
50.8 |
33.5 |
82.6 |
82.6 |
47.8 |
44.5 |
to be specified by purchaser |
34.5 |
50.8 |
R16 |
6.4 |
12.7 |
5/8×3.00 |
5/8×3.50 |
101.6 |
4 |
8-Jul |
25.4 |
152.4 |
158.8 |
1 |
| 1 ¼ |
15 |
35.1 |
35.1 |
63.5 |
63.5 |
42.2 |
73.2 |
73.2 |
47.8 |
44.5 |
43.2 |
60.3 |
R18 |
6.4 |
12.7 |
5/8×3.00 |
5/8×3.50 |
111.3 |
4 |
8-Jul |
25.4 |
139.7 |
146.1 |
1 ¼ |
| 1 ½ |
178 |
38.1 |
38.1 |
69.9 |
73.2 |
48.3 |
88.9 |
88.9 |
47.8 |
44.5 |
49.5 |
68.3 |
R20 |
6.4 |
12.7 |
5/8×3.00 |
5/8×3.50 |
124.0 |
4 |
1 |
28.4 |
158.8 |
165.1 |
1 ½ |
| 2 |
216 |
38.1 |
38.1 |
104.6 |
91.9 |
60.5 |
101.6 |
101.6 |
57.2 |
57.2 |
62.0 |
95.3 |
R24 |
6.4 |
12.7 |
5/8×3.00 |
5/8×4.00 |
165.1 |
8 |
8-Jul |
25.4 |
152.4 |
165.1 |
2 |
| 2 ½ |
244 |
41.1 |
41.1 |
124.0 |
104.6 |
73.2 |
104.6 |
104.6 |
63.5 |
63.5 |
74.7 |
108.0 |
R27 |
6.4 |
12.7 |
5/8×3.00 |
5/8×4.00 |
190.5 |
8 |
1 |
28.4 |
165.1 |
177.8 |
2 ½ |
| 3 |
267 |
47.8 |
47.8 |
133.4 |
127.0 |
88.9 |
117.3 |
117.3 |
73.2 |
73.2 |
90.7 |
136.5 |
R35 |
9.7 |
15.7 |
5/8×3.00 |
¾ ×4.50 |
203.2 |
8 |
1 1/8 |
31.8 |
184.2 |
196.9 |
3 |
| 4 |
311 |
53.8 |
53.8 |
162.1 |
157.2 |
114.3 |
124.0 |
124.0 |
90.4 |
90.4 |
116.1 |
161.9 |
R39 |
9.7 |
15.7 |
¾ ×3.50 |
¾ ×4.50 |
241.3 |
8 |
1 ¼ |
35.1 |
203.2 |
215.9 |
4 |
| 5 |
375 |
73.2 |
73.2 |
196.9 |
185.7 |
141.2 |
155.4 |
104.6 |
104.6 |
104.6 |
143.8 |
193.7 |
R44 |
9.7 |
15.7 |
¾ ×3.50 |
¾ ×4.50 |
292.1 |
8 |
1 ½ |
41.1 |
247.7 |
260.4 |
5 |
| 6 |
394 |
82.6 |
82.6 |
228.6 |
215.9 |
168.4 |
171.5 |
171.5 |
119.1 |
119.1 |
170.7 |
211.1 |
R46 |
15.8 |
22.4 |
1×6.00 |
1×6.50 |
217.5 |
12 |
1 3/8 |
38.1 |
266.7 |
279.4 |
6 |
| 8 |
483 |
92.0 |
92.0 |
292.1 |
269.7 |
219.2 |
212.9 |
212.9 |
142.7 |
142.7 |
221.5 |
269.9 |
R50 |
15.7 |
22.4 |
1×6.50 |
1×6.50 |
393.7 |
12 |
1 5/8 |
44.5 |
298.5 |
317.5 |
8 |
| 10 |
584 |
108.0 |
108.0 |
368.3 |
323.9 |
273.1 |
254.0 |
254.0 |
158.8 |
158.8 |
276.4 |
323.9 |
R54 |
15.7 |
22.4 |
1×6.50 |
1×7.00 |
482.6 |
12 |
1 7/8 |
50.8 |
342.9 |
362.0 |
10 |
| 12 |
673 |
124.0 |
124.0 |
450.9 |
381.0 |
323.9 |
282.4 |
282.4 |
180.8 |
180.8 |
327.2 |
381.0 |
R58 |
15.7 |
22.4 |
1×6.50 |
1×8.00 |
571.5 |
16 |
2 |
53.8 |
381.0 |
406.4 |
12 |
| 14 |
749 |
133.4 |
|
495.3 |
412.8 |
355.6 |
298.5 |
|
|
|
635.0 |
16 |
2 ¼ |
60.5 |
412.8 |
|
14 |
| 16 |
826 |
146.1 |
552.5 |
469.9 |
406.4 |
311.2 |
704.9 |
16 |
2 ½ |
66.5 |
450.9 |
16 |
| 18 |
914 |
162.1 |
596.9 |
533.4 |
457.2 |
327.2 |
774.7 |
16 |
2 ¾ |
73.2 |
501.7 |
18 |
| 20 |
984 |
177.8 |
641.4 |
584.2 |
508.0 |
355.6 |
831.9 |
16 |
3 |
79.2 |
546.1 |
20 |
| 24 |
1168 |
203.2 |
762.0 |
692.2 |
609.6 |
406.4 |
990.6 |
16 |
3 ½ |
91.9 |
622.3 |
24 |
| Notes: |
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| (1)
For the inside diameter of Pipes (corresponding to Bore (B) of welding Neck
Flanges), refer to page 54. |
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| (2)
Class 900 flanges of sizes 1" (25.4mm) through 2 1/2" are the same
as for class 1500 |
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| (3)
Class 900 and 1500 is not included in thickness (t) an d length through Hub
(t) |
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| (4)
Each union includes two carbon steel jack screw bolts with hex nuts. |
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| (5)
Unless otherwise specified, raised face unions are furnished with alloy bolt
studs per ASTM A193 Grade B7 with American. |
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| Standard
heavy series hex nuts ASTM A194 Class 2H. |
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| (6)
On ring joint flanges having a groove depth 0.375" (9.5mm) and less, the
distance from the center line of the tap hole to the flange |
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| face
is 0.750" (19.1mm) when the depth of groove is 0.438" (11.1mm) or
greater, changes in drill size or method of drilling are necessary. |
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| (7)
Bolt lengths for raised face flanges include allowance for orifice and gasket
thickness of 0.25" (6.4mm) for sizes 3-12 and |
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| 0.38"
(9.7mm) for sizes 14-24. bolt lengths for ring type joint flanges include
allowance of 0.62" (15.7mm) for sizes 3-10 |
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| and
0.75" (19.1mm) for sizes 12. |
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