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Ansi B16 5 Class 2500 Flange Dimensions

Ansi B16 5 Class 2500 Flange Dimensions allow the flanges to hold some of the maximum pressures excerpted in pipe systems. The standard ANSI B16.5 includes flanges of ½ inches to 24 inches in nominal sizes. The pressure capacities of the flanges vary from 150lb to 2500lb. The 2500 Lb Flange Dimensions allow the flanges to undergo very high pressures up to 2500lbs. To achieve this high pressure capacity, optimum material grades have to be selected. There are different types of flanges in this standard such as slip on flanges, blind flanges, weld neck flanges and lap joint flanges.

ANSI B16.5 2500 Lb Flange

ANSI B16.5 2500 Lb Flange

The Class 2500 lb weld neck flange dimensions are measured in imperial or metric measurements. The socket weld flanges are used in applications where the pipe has to be held onto prior to welding. Also the socket weld flanges provide extra space, surface and grip to the connection. The 2500 lb blind flange dimensions allow for the blind flanges to be connected to the end of a pipe and to close the pipeline either temporarily or permanently. The connections that need regular maintenance use the blind flanges for easy opening and closing of the pipelines. The Class 2500 Flange is one of the highest pressure rating flanges. For this high alloy materials, duplex and carbon steel materials along with stainless steel materials are used. The ASME B16.5 Class 2500 Flange is used in water lines, oil and gas, petroleum, food processing, heat exchanger, power generation oil drilling and other applications as well.

Table of Content



Specification of Class 2500 Flange


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)

Ansi B16 5 Class 2500 Flange Dimension Chart


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

Weight of 2500 lb blind flange


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

Class 2500 Weld Neck Flange Size Chart


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

ASME B16.58 Class 2500 Bolt Size


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
-
-
-
-

Ansi B16 5 Class 2500 Flange Pressure Rating


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

Flanges Dimensions