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| Specification : | ASME B16.5 Reducing Flange |
| Design For Size: | ASA, ASME, DIN, PN, JIS, ANSI, BS, EN |
| Pressure Rating Table: | Class 150 LBS, Class 300 LBS, Class 600 LBS, Class 900 LBS, Class 1500 LBS, Class 2500 LBS |
| Connect Type Type: | RF, FF, RTJ, LMF, SMF, LJF. |
| Size Chart : | 1/2″ (15 NB) To 48″ (1200NB) |
| Production Process: | Forged, Heat Treated and Machined |
| Standards : | ASME B16.5, ASME B16.47 (Series A, Series B), ASME B16.38, EN-1092, BS10, DIN, PN, JIS, ISO, GOST, UNI, AWWA, MSS SP44. |
| Machining Equipment: | Bending machine, Pushing Machine, Sand-blasting machine, Press machine, electric bevelling machine etc |
| Coating Flanges Faces : | Yellow Transparent, Oil Black Paint, Anti-rust Paint, Cold and Hot Dip Galvanized, Zinc Plated |
| ASME B16.5 Application: | Oil And Gas Industry Nuclear Power Plant Natural Gas Industry Chemical Industry Fabrication Industry Water Pipeline Industry |
|
Normal Pipe Size |
Diam. |
Thick. |
DIA. |
Welding |
Minimum. |
Minimum. |
Minimum. |
Neck |
Welding |
Joint |
||||
|
DN |
O |
T |
A |
B |
C |
D |
E |
F |
G |
H |
||||
|
1/2 |
5.25 |
1.19 |
1.38 |
0.88 |
.90 |
0.93 |
2.88 |
1.56 |
1.56 |
|||||
|
15 |
133 |
30.5 |
34.9 |
22.2 |
22.9 |
23.5 |
73.0 |
40 |
40 |
|||||
|
3/4 |
5.50 |
1.25 |
1.69 |
1.09 |
1.11 |
1.14 |
3.12 |
1.69 |
1.69 |
|||||
|
20 |
140 |
32.0 |
42.9 |
27.8 |
28.2 |
29.0 |
79.4 |
43 |
43 |
|||||
|
1 |
6.25 |
1.38 |
2.00 |
1.36 |
1.38 |
1.41 |
3.50 |
1.88 |
1.88 |
|||||
|
25 |
159 |
35.0 |
50.8 |
34.5 |
34.9 |
36.0 |
88.9 |
48 |
48 |
|||||
|
1 1/4 |
7.25 |
1.50 |
2.50 |
1.70 |
1.72 |
1.75 |
3.75 |
2.06 |
2.06 |
|||||
|
32 |
184 |
38.5 |
63.5 |
43.3 |
43.7 |
44.5 |
95.2 |
52 |
52 |
|||||
|
1 1/2 |
8.00 |
1.75 |
2.88 |
1.95 |
1.97 |
1.99 |
4.38 |
2.38 |
2.38 |
|||||
|
40 |
203 |
44.5 |
73.0 |
49.6 |
50.0 |
50.5 |
111.4 |
60 |
60 |
|||||
|
2 |
9.25 |
2.00 |
3.62 |
To be |
2.44 |
2.46 |
2.50 |
5.00 |
2.75 |
2.75 |
||||
|
50 |
235 |
51.0 |
92.1 |
61.9 |
62.5 |
63.5 |
127.0 |
70 |
70 |
|||||
|
2 1/2 |
10.50 |
2.25 |
4.12 |
specified |
2.94 |
2.97 |
3.00 |
5.62 |
3.12 |
3.12 |
||||
|
65 |
267 |
57.5 |
104.8 |
74.6 |
75.4 |
76 |
142.9 |
79 |
79 |
|||||
|
3 |
12.00 |
2.62 |
5.00 |
by |
3.57 |
3.60 |
3.63 |
6.62 |
3.62 |
3.62 |
||||
|
80 |
305 |
67.0 |
127.0 |
90.7 |
91.4 |
92 |
168.2 |
92 |
92 |
|||||
|
4 |
14.00 |
3.00 |
6.19 |
purchaser |
4.57 |
4.60 |
4.63 |
7.50 |
4.25 |
4.25 |
||||
|
100 |
356 |
76.5 |
157.2 |
116.1 |
116.8 |
118 |
190.5 |
108 |
108 |
|||||
|
5 |
16.50 |
3.62 |
7.31 |
5.66 |
5.69 |
5.69 |
9.00 |
5.12 |
5.12 |
|||||
|
125 |
419 |
92.5 |
185.7 |
143.7 |
144.5 |
145 |
228.6 |
130 |
130 |
|||||
|
6 |
19.00 |
4.25 |
8.50 |
6.72 |
6.75 |
6.75 |
10.75 |
6.0 |
6.0 |
|||||
|
150 |
483 |
108.0 |
215.9 |
170.7 |
171.4 |
171 |
273.0 |
152 |
152 |
|||||
|
8 |
21.75 |
5.00 |
10.62 |
8.72 |
8.75 |
8.75 |
12.50 |
7.0 |
7.0 |
|||||
|
200 |
552 |
127.0 |
269.9 |
221.5 |
222.2 |
222 |
317.5 |
178 |
178 |
|||||
|
10 |
26.50 |
6.50 |
12.75 |
10.88 |
10.92 |
10.88 |
16.50 |
9.0 |
9.0 |
|||||
|
250 |
675 |
165.5 |
323.8 |
276.2 |
277.4 |
276 |
419.4 |
229 |
229 |
|||||
|
12 |
30.00 |
7.25 |
15.00 |
12.88 |
12.92 |
12.94 |
18.25 |
10.0 |
10.0 |
|||||
|
300 |
760 |
184.5 |
381.0 |
327.0 |
328.2 |
329 |
463.6 |
254 |
254 |
|||||
Dimensions do not include .25" (6.4 mm) FF.
2500# (PN 420) Socket Welding and SORF Flanges not covered by ASME B16.5
4 X 3 Reducing Weld Neck Flange
EN 1092-2 PN16 Reducing Slip On Flange
4 x 2-1/2 inch 300# Threaded Reducings Flange
SCH40 10 x 3 inch Reducings Flange Adapter
ASTM A182 Class 600 Stainless Steel Reducings Flange
6 inch A105 Carbon Steel Reducings Flange
1/2 To 3/4 SCH 10 150# Ductile Iron Reducing Flange
EN 1092-1 Type 02 Cast Iron Reducings Flange
3 x 2 inch Pipe Reducings Hub Flange
F304 300# Welding Reducings Companion Flange
ANSI 4 Inch 150 Lb Reducings Flange
Concentirc Galvanized Reducings Flange
| NPS | Type | Ø A | D | Liner Thick. |
|
| DN1 | DN2 | ||||
| Inch | Inch | millimeter | millimeter | millimeter | |
| 3/4" | 1/2" | 1 | 98.5 | 30 | 5.0 |
| 1" | 1/2" | 1 | 108 | 30 | 5.0 |
| 1" | 3/4" | 1 | 108 | 30 | 5.0 |
| 1.1/2" | 1/2" | 1 | 127 | 30 | 5.0 |
| 1.1/2" | 3/4" | 1 | 127 | 30 | 5.0 |
| 1.1/2" | 1" | 1 | 127 | 30 | 5.0 |
| 2" | 1/2" | 3 | 152 | 30 | 5.0 |
| 2" | 3/4" | 2 | 152 | 30 | 5.0 |
| 2" | 1" | 2 | 152 | 30 | 5.0 |
| 2" | 1.1/2" | 1 | 152 | 30 | 5.0 |
| 3" | 3/4" | 3 | 190.5 | 35 | 5.0 |
| 3" | 1" | 3 | 190.5 | 35 | 5.0 |
| 3" | 1.1/2" | 2 | 190.5 | 35 | 5.0 |
| 3" | 2" | 1 | 190.5 | 35 | 5.0 |
| 4" | 3/4" | 3 | 228.6 | 35 | 5.0 |
| 4" | 1" | 3 | 228.6 | 35 | 5.0 |
| 4" | 1.1/2" | 3 | 228.6 | 35 | 5.0 |
| 4" | 2" | 3 | 228.6 | 35 | 5.0 |
| 4" | 3" | 2 | 228.6 | 35 | 5.0 |
| 6" | 3/4" | 3 | 280 | 40 | 5.0 |
| 6" | 1" | 3 | 280 | 40 | 5.0 |
| 6" | 1.1/2" | 3 | 280 | 40 | 5.0 |
| 6" | 2" | 3 | 280 | 40 | 5.0 |
| 6" | 3" | 3 | 280 | 40 | 5.0 |
| 6" | 4" | 2 | 280 | 40 | 5.0 |
| 8" | 1" | 3 | 343 | 35 | 5.0 |
| 8" | 1.1/2" | 3 | 343 | 35 | 5.0 |
| 8" | 2" | 3 | 343 | 40 | 5.0 |
| 8" | 3" | 3 | 343 | 40 | 5.0 |
| 8" | 4" | 3 | 343 | 40 | 5.0 |
| 8" | 6" | 2 | 343 | 40 | 5.0 |
| 10" | 1" | 3 | 406 | 35 | 2.5 |
| 10" | 1.1/2" | 3 | 406 | 35 | 2.5 |
| 10" | 2" | 3 | 406 | 35 | 2.5 |
| 10" | 3" | 3 | 406 | 35 | 2.5 |
| 10" | 4" | 3 | 406 | 35 | 2.5 |
| 10" | 6" | 3 | 406 | 35 | 2.5 |
| 10" | 8" | 2 | 406 | 35 | 3.5 |
| 12" | 1" | 3 | 483 | 35 | 3.5 |
| 12" | 1.1/2" | 3 | 483 | 35 | 3.5 |
| 12" | 2" | 3 | 483 | 35 | 3.5 |
| 12" | 3" | 3 | 483 | 35 | 3.5 |
| 12" | 4" | 3 | 483 | 35 | 3.5 |
| 12" | 6" | 3 | 483 | 35 | 3.5 |
| 12" | 8" | 3 | 483 | 35 | 3.5 |
| 12" | 10" | 2 | 483 | 35 | 3.5 |
| 14" | 12" | 1 | 533 | 40 | 3.5 |
| 16" | 12" | 3 | 597 | 40 | 3.5 |
| 16" | 14" | 2 | 597 | 35 | 3.5 |
| ASNME B16.5 Reducings Flange Pressure Rating |
|||||||
| Temperature (F°) | Class 150 | Class 300 | Class 400 | Class 600 | Class 900 | Class 1500 | Class 2500 |
| -20 to 100 | 285 | 740 | 985 | 1480 | 2220 | 3705 | 6170 |
| 200 | 260 | 680 | 905 | 1360 | 2035 | 3395 | 5655 |
| 300 | 230 | 655 | 870 | 1310 | 1965 | 3270 | 5450 |
| 400 | 200 | 635 | 845 | 1265 | 1900 | 3170 | 5280 |
| 500 | 170 | 605 | 805 | 1205 | 1810 | 3015 | 5025 |
| 600 | 140 | 570 | 755 | 1135 | 1705 | 2840 | 4730 |
| 650 | 125 | 550 | 730 | 1100 | 1650 | 2745 | 4575 |
| 700 | 110 | 530 | 710 | 1060 | 1590 | 2655 | 4425 |
| 750 | 95 | 505 | 675 | 1015 | 1520 | 2535 | 4230 |
| 800 | 80 | 410 | 550 | 825 | 1235 | 2055 | 3430 |
| 850 | 65 | 320 | 425 | 640 | 955 | 1595 | 2655 |
| 900 | 50 | 230 | 305 | 460 | 690 | 1150 | 1915 |
| 950 | 35 | 135 | 185 | 275 | 410 | 685 | 1145 |
| 1000 | 20 | 85 | 115 | 170 | 255 | 430 | 715 |