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The main function of a flange is to provide assistance during processes like cleaning, modifying and inspecting piping systems. There are different types of ASME B16.5 Class 2500 Flange such as blind, weld neck, socket weld, slip on flanges etc. Socket-weld pipe flanges are normally used in conjunction with smaller sizes in high pressure applications. These pipe flanges are attached by inserting the pipe into the socket end, following which a fillet weld is applied around the top. Using a 2500 Lb Socket Weld Flange permits for a smooth bore in addition to a better flow of the fluid or gas inside of the pipe.
The ASME B16.5 - 1996 is a standard used by manufacturers to produce the aforementioned Pipe Flanges and Flanges Fittings. The standard covers various criteria for instance materials, Class 2500 Blind Flange Dimension, tolerances, marking, testing. Along with these criteria, the standard also takes into consideration pressure-temperature ratings for e.g. 2500# Slip On Flange Pressure Ratinge as well as procedures of designating openings for pipe flanges and flanged fittings.
Contact Us For Buy 1/2 * 3/4 NPS, ASME 16.5 / ANSI B16.5 2500LB, ASTM A105n & ASTM A182 F316L, FF, Forged, RF, SCH-10 To SCH-120.
Along with pressure rating 2500, the ASME B16.5 standard includes flanges with rating class designations 150, 300, 400, 600, 900, and 1500 constructed in sizes that range between NPS 1/2 through NPS 24, with the requirements mentioned in both metric as well as U.S units. The Standard is limited to Stainless Steel Class 2500 Flange and flanged fittings made from cast or forged materials, or plate materials. Also included in this Standard are requirements and recommendations regarding flanges bolting, Carbon Steel 2500# Flange gaskets, and flanges joints.
| NPS | Outside diameter of flanges |
Mini. thick. of flanges |
Overall Length | Bolt Circle |
Number and Size of Holes |
Outside Daimeter of raised face |
|||
|---|---|---|---|---|---|---|---|---|---|
| Welding neck |
Slip-on & socket welding |
Lap Joint |
|||||||
| O | Q | Y | Diam. | No. | dia. | R | |||
| 1/2 | 12.1 | 22.3 | 60.3 | 31.8 | 31.8 | 82.5 | 4 | 22 | 35 |
| 3/4 | 130 | 25.4 | 69.8 | 34.9 | 34.9 | 89.0 | 4 | 22 | 43 |
| 1 | 149 | 28.6 | 73.0 | 41.3 | 41.3 | 101.5 | 4 | 25 | 51 |
| 1-1/4 | 159 | 28.6 | 73.0 | 41.3 | 41.3 | 111.0 | 4 | 25 | 64 |
| 1-1/2 | 178 | 31.8 | 82.6 | 44.4 | 44.4 | 124.0 | 4 | 29 | 73 |
| 2 | 216 | 38.1 | 101.6 | 57.2 | 57.2 | 165.0 | 8 | 25 | 92 |
| 2-1/2 | 244 | 41.3 | 104.8 | 63.5 | 63.5 | 190.5 | 8 | 29 | 105 |
| 3 | 267 | 47.7 | 117.5 | 73.0 | 73.0 | 203.0 | 8 | 32 | 127 |
| 3-1/2 | |||||||||
| 4 | 311 | 54.0 | 123.8 | 90.5 | 90.5 | 241.5 | 8 | 35 | 157 |
| 5 | 375 | 73.1 | 155.5 | 104.8 | 104.8 | 292.0 | 8 | 41 | 186 |
| 6 | 394 | 82.6 | 171.4 | 119.1 | 119.1 | 317.5 | 12 | 38 | 216 |
| 8 | 483 | 92.1 | 212.7 | 142.9 | 142.9 | 393.5 | 12 | 45 | 270 |
| 10 | 584 | 108.0 | 254.0 | 158.8 | 177.8 | 482.5 | 12 | 51 | 324 |
| 12 | 673 | 123.9 | 282.9 | 181.0 | 219.1 | 571.5 | 16 | 54 | 381 |
| 14 | 749 | 133.4 | 298.4 | ----- | 241.3 | 635.0 | 16 | 60 | 413 |
| 16 | 826 | 146.1 | 311.2 | ----- | 260.4 | 705.0 | 16 | 51 | 470 |
| 18 | 914 | 162.0 | 327.0 | ------ | 276.2 | 474.5 | 16 | 73 | 538 |
| 20 | 984 | 117.8 | 355.4 | ----- | 292.1 | 832.0 | 16 | 80 | 584 |
| 24 | 1168 | 203.2 | 406.4 | ----- | 330.2 | 990.5 | 16 | 92 | 692 |
| CLASS | Nominal Pipe Size | Slip On | Threaded | Socket Weld | Lap Joint | Blind | Weld Neck |
| 2500# | ½ | 1 | 1 | 2 | 1 | 2 | 2 |
| ¾ | 2 | 2 | 2 | 2 | 2 | 2 | |
| 1 | 2 | 2 | 2 | 2 | 2 | 3 | |
| 1¼ | 3 | 3 | 3 | 3 | 3 | 3 | |
| 1½ | 3 | 3 | 3 | 3 | 4 | 4 | |
| 2 | 5 | 5 | 5 | 5 | 5 | 6 | |
| 2½ | 8 | 8 | 8 | 8 | 7 | 10 | |
| 3 | 9 | 9 | 9 | 9 | 9 | 11.5 | |
| 3½ | 11 | 12 | 11 | 11 | 13 | 12 | |
| 4 | 13 | 13 | 13 | 13 | 17 | 16.5 | |
| 5 | 15 | 15 | 15 | 15 | 20 | 21 | |
| 6 | 19 | 19 | 19 | 19 | 27 | 26 | |
| 8 | 30 | 30 | 30 | 30 | 47 | 42 | |
| 10 | 43 | 43 | 43 | 43 | 70 | 54 | |
| 12 | 64 | 64 | 64 | 64 | 123 | 88 | |
| 14 | 90 | 90 | 90 | 105 | 140 | 114 | |
| 16 | 106 | 98 | 98 | 140 | 180 | 140 | |
| 18 | 130 | 130 | 130 | 160 | 220 | 165 | |
| 20 | 165 | 165 | 165 | 195 | 285 | 197 | |
| 22 | 185 | 185 | 185 | 245 | 355 | 225 | |
| 24 | 220 | 220 | 220 | 275 | 430 | 268 |
| Specification : | ASME B16.5 Class 2500 Flange |
| Machining Equipment: | Press machine, Pushing Machine, Electric bevelling machine, Bending machine, Sand-blasting machine etc |
| Standards : | BS10 Flange, ASME B16.38 Flange, UNI Flange, PN Flange, ISO Flange, JIS Flange, MSS SP44 Flange, EN-1092 Flange, ASME B16.47 (Series A, Series B) Flange, ASME B16.5 Flange, AWWA Flange, DIN Flange, GOST Flange |
| Pressure Rating Table: | Class 150 LBS, Class 300 LBS, Class 600 LBS, Class 900 LBS, Class 1500 LBS, Class 2500 LBS |
| Production Process: | Forged, Heat Treated and Machined |
| Supporting Flanges Material: | Gasket, Ring Joint, Flanges Bolts |
| Application: | Oil And Gas Industry Natural Gas Industry Water Pipeline Industry Fabrication Industry Nuclear Power Plant Chemical Industry |
| Connect Type Type: | RTJ, SMF, LJF, LMF, RF, FF |
| Design For Size: | ASA, PN, JIS, ANSI, ASME, EN, DIN, BS |
| Coating Flanges Faces : | Anti-rust Paint, Zinc Plated, Oil Black Paint, Yellow Transparent, Cold and Hot Dip Galvanized |
| Common Types of 2500# Flanges : | Class 2500 RTJ Flanges 2500 LB WNRF Class 2500 SORF 2500# BLRF |
| Size Chart : | 1/2″ (15 NB) To 48″ (1200NB) |
class 2500 Expander Flange
ANSI B16.5 Class 2500 Socket-weld Flange
2500# High hub Blind Flange
Welding Neck Flanges ANSI B16.5 2500 Lbs
Class 2500 Plate Flange
ANSI 2500 Square Flange
Class 2500 Puddle Flanges
ANSI 2500 Flanges Adapter
2500# Rf Threaded Flange
ANSI B16.5 Class 2500 Lap Joint Flange
Class 2500 Long Weld Neck Flange
ANSI/ASME B16.5 Class 2500 Forged Flange
| Temperature (in F°) | Class 2500# |
|---|---|
| < 100 | 6170 |
| 200 | 5655 |
| 300 | 5450 |
| 400 | 5280 |
| 500 | 5025 |
| 600 | 4730 |
| 650 | 4575 |
| 700 | 4425 |
| 750 | 4230 |
| 800 | 3430 |
| 850 | 2655 |
| 900 | 1915 |
| 950 | 1145 |
| 1000 | 715 |
| Hydrostatic Test Pressure (psig) | 9275 |
Class 2500 Flanges |
||||
# Bolts or Studs |
Dia of Bolts or Studs |
Length of Stud |
||
RTJ |
1/4 RF |
RTJ |
||
4-1/4 |
4 |
0.75 |
4-3/4 |
4-3/4 |
4-1/2 |
4 |
0.75 |
5 |
5 |
5 |
4 |
0.88 |
5-1/2 |
5-1/2 |
5 |
4 |
1.00 |
6 |
6 |
5-1/2 |
4 |
1.13 |
6-3/4 |
6-3/4 |
5-3/4 |
8 |
1.00 |
7 |
7 |
6-1/4 |
8 |
1.13 |
7-3/4 |
8 |
7 |
8 |
1.25 |
8-3/4 |
9 |
7-3/4 |
8 |
1.50 |
10 |
10-1/4 |
9-3/4 |
8 |
1.75 |
11-3/4 |
12-1/4 |
10-1/2 |
8 |
2.00 |
13-1/2 |
14 |
12-3/4 |
12 |
2.00 |
15 |
15-1/2 |
13-1/2 |
12 |
2.50 |
19-1/4 |
20 |
15-1/4 |
12 |
2.75 |
21-1/4 |
22 |
16-3/4 |
- |
- |
- |
- |
18-1/2 |
- |
- |
- |
- |
20-3/4 |
- |
- |
- |
- |
22-1/4 |
- |
- |
- |
- |
25-1/2 |
- |
- |
- |
- |
| NPS NPS (inch) |
ASME B16.5 2500# Flanges | ||||
|---|---|---|---|---|---|
| Diammeter of Flange (inch) |
No. of Bolts |
Diammeter of Bolts (inch) |
Diammeter of Bolt Holes (inch) |
Bolt Circle (inch) |
|
| 1/4 | 3-3/8 | 4 | 1/2 | 0.62 | 2-1/4 |
| 1/2 | 3-1/2 | 4 | 1/2 | 0.62 | 2-3/8 |
| 3/4 | 3-7/8 | 4 | 1/2 | 0.62 | 2-3/4 |
| 1 | 4-1/4 | 4 | 1/2 | 0.62 | 3-1/8 |
| 1-1/4 | 4-5/8 | 4 | 1/2 | 0.62 | 3-1/2 |
| 1-1/2 | 5 | 4 | 1/2 | 0.62 | 3-7/8 |
| 2 | 6 | 4 | 5/8 | 0.75 | 4-3/4 |
| 2-1/2 | 7 | 4 | 5/8 | 0.75 | 5-1/2 |
| 3 | 7-1/2 | 4 | 5/8 | 0.75 | 6 |
| 3-1/2 | 8-1/2 | 8 | 5/8 | 0.75 | 7 |
| 4 | 9 | 8 | 5/8 | 0.75 | 7-1/2 |
| 5 | 10 | 8 | 3/4 | 0.88 | 8-1/2 |
| 6 | 11 | 8 | 3/4 | 0.88 | 9-1/2 |
| 8 | 13-1/2 | 8 | 3/4 | 0.88 | 11-3/4 |
| 10 | 16 | 12 | 7/8 | 1 | 14-1/4 |
| 12 | 19 | 12 | 7/8 | 1 | 17 |
| 14 | 21 | 12 | 1 | 1.12 | 18-3/4 |
| 16 | 23-1/2 | 16 | 1 | 1.12 | 21-1/4 |
| 18 | 25 | 16 | 1-1/8 | 1.25 | 22-3/4 |
| 20 | 27-1/2 | 20 | 1-1/8 | 1.25 | 25 |
| 24 | 32 | 20 | 1-1/4 | 1.38 | 29-1/2 |