Ansi B16 5 Class 2500 Flange Dimensions

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Pressure rating is well-defined as the maximum allowable pressure that a flange can withstand at increasing temperatures. According to the specifications such as ANSI/ASME B16.5, there are seven pressure ratings amongst flange i.e. - class 150, class 300, class 400, class 600, class 900, class 1500, and class 2500.Class, #, pressure rating, Lb or Lbs are all interchangeable terms. Which means they all refer to the same or the exact concept of pressure - temperature performance of a flange or in case of other  equipment such as valves, fittings, etc.

Table of Content

For example , when two flanges have the same bore size, say about 6 inches , manufactured with the same material suppose grade A105, but the flanges have two different pressure ratings i.e. one flange is class 150 while the other one is 300. In this case the lower rated flange which is class 150 is going to be smaller, lighter, and less robust as compared to the higher rated flange i.e. class 300.

In terms of pressure rating, this means a class 150 flange can withstands a pressure of just 140 psi at a temperature of 600 degrees F° , While a class 300 flange, which is bigger and stronger as compared to class 150 , but with the same bore size is able to withstand a pressure of 570 psi at the same temperature of 600 degrees F°. Lastly, a class 2500 flange of the same size can bear 34 times more pressure as compared to a class 150 rated flange. This means that  2500 lb blind flange dimensions can reach a whopping pressure of 4730 psi at  a temperature of 600 F°!

The term flange rating or flange class refers to the maximum pressure that a flange  can withstand at increasing temperature intervals. The maximum pressure value here can either be in psi or in bars.  Those Flanges that have a higher rating or higher class are stronger as compared to the flanges with lower ratings. This is because higher rated flanges can bear more pressure at increasing temperatures. For instance, a 2500 lb weld neck flange dimensions will be stronger as compared to a 1500 lb flange. And this 2500 lb blind flange dimensions will be able to bear more pressure at increased temperatures.

2500 lb rtj flange dimensions made in different materials will exhibit or demonstrate  different pressure-temperature performance even if they have the same  rating. For example a 2500 pound flange dimensions manufactured from carbon alloy will exhibit a different set of features or characteristics when compared to the same pressure class dimension flange that has been produced from stainless steel. Generally most flanges are manufactured from carbon steel as well as  from various Austenitic Stainless Steel grades.

Learn more about the 2500 LB Flange Dimensions in order to select the proper rating for your piping application here.

 

Bolt Chart of Class 2500 Flange

Bolt And Stud Dimensions Chart - ASME B16.5 Flanges

 


2500 LB. 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
-
-
-
-

 

Specifications of Class 2500 Flange
Specifications Class 2500 Flanges
ASME B16.5 Class 2500 Flange size range 1/2" (15 NB) to 48" (1200NB) DN10~DN5000
ansi b16.5 Class 2500 Flanges Standards B16.47 Series A & B, ANSI/ASME B16.5, BS4504, B16.48, EN-1092, BS 10, DIN, ANSI Flanges, BS Flanges, ASME Flanges, EN Flanges, DIN Flanges, GOST Flanges.
ansi b16.5 Class 2500 Flange Standard DIN 6Bar 10Bar 16Bar 25Bar 40Bar / PN6 PN10 PN16 PN25 PN40, PN64
ansi b16.5 Class 2500 Flange Standard JIS 5K, 10 K, 16 K 20 K, 30 K, 40 K, 63 K
ansi b16.5 Class 2500 Flange Standard UNI 6Bar 10Bar 16Bar 25Bar 40Bar
ansi b16.5 Class 2500 Flange Standard EN 6Bar 10Bar 16Bar 25Bar 40Bar
Main Types Threaded / Forged / Plate /Screwed
Flange supporting material Ring Joint, Gasket, Flange Bolts
ansi b16.5 Class 2500 Pipe Flanges Test Certificates EN 10204/3.1B
Raw Materials Certificate
100% Radiography Test Report
Third Party Inspection Report, etc
Most common types of ansi b16.5 Class 2500Flanges
  • Slip-On Ring Flange (SORF), Class 2500
  • Weld Neck Ring Flange (WNRF), Class 2500
  • Threaded Ring Flange, Class 2500
  • Socket Weld Ring Flange (SWRF), Class 2500
  • Blind Ring Flange (BLRF), Class 2500
  • Ring Type Joint Flange (RTJF), Class 2500
  • Lap Joint Ring Flange (LJRF), Class 2500
Production technique
  • Forged, Heat treated and machined
Connect Type/ Flange Face Type Ring Type Joint (RTJ), Raised Face (RF),Large Male-Female (LMF), Flat Face (FF),Small Male-Female (SMF), Lap-Joint Face (LJF), Large Tongue & Groove, Small Tongue, Groove
Special design

As per your drawing

AS, ANSI, BS, DIN and JIS
15 NB (1/2") to 200 NB (8")
Equal and Reducing Configurations

Class 2500 Threaded Flange, Socketweld Flange, Slip-On Flange, Blind Flange, Weld Neck Flange
Test Direct-reading Spectrograph, Hydrostatic testing machine, X-ray detector, UI trasonic flaw detector, Magnetic particle detector
Equipment Bending machine, Press machine, electric bevelling machine, Pushing Machine, Sand-blasting machine etc
Origin Indian / West Europe / Japan / USA / Korean
Specialized manufacturer of
  • DIN 2566 pn16
  • Rtj Flange
  • PN16 Flange
  • DIN 2566 pn10
  • DIN 2566 en 1092 1
  • Class 2500 Blind Flanges
  • Class 2500 Large Diameter Flange
  • Class 2500 Table Flanges
  • Class 2500 Sorf Flange
  • Class 2500 Socketweld Flanges
  • Class 2500 Threaded Flanges
  • Class 2500 Weld Neck Flanges
  • Class 2500 Slip-On Flanges
  • Class 2500 Loose Flanges
  • Class 2500 AS 4087 Water Flanges
  • Class 2500 Lap Joint Flanges
  • Class 2500 Plate Flanges
  • Class 2500 Orifice Flanges
Class 2500 Flanges Standard

ANSI DIN, GOST, JIS, UNI, BS, AS2129, AWWA, EN, SABS, NFE etc.
BS Flange, EN Flange, API 6A Flange, ANSI Flange, ASME Flange, DIN Flange, EN1092-1 Flange, UNI Flange, JIS/ KS Flange, BS4504 Flange, GB Flange, AWWA C207 Flange, GOST Flange, PSI Flange

  • ANSI B16.5, ANSI B16.47 Series A & B, MSS SP44, ASA, API-605, AWWA, Custom Drawings
  • AS 2129: Table D; Table E; Table H
  • B.S: BS4504 , BS3293, BS1560, BS10
  • ANSI B16.5, ANSI B16.47, MSS SP44, ANSI B16.36, ANSI B16.48
  • ANSI : ANSI B16.5, ANSI B16.47(API605), MSS SP44, ANSI B16.36, ANSI B16.48
  • German (DIN)
  • American standard (ANSI)
  • Any other specilised flanges
  • British standard (BS)
  • The other standard: AWWA C207; EN1092-1, GOST12820, JIS B2220; KS B1503, SABS1123; NFE29203;UNI2276
  • DIN: DIN 2527, DIN 2566, DIN 2573, DIN 2576, DIN 2641, DIN 2642, DIN 2655, DIN 2656, DIN 2627, DIN 2628, DIN 2629, DIN 2631, DIN 2632, DIN 2633, DIN 2634, DIN 2635, DIN 2636, DIN 2637, DIN 2638
Key markets and industries for Class 2500 Flanges
  • Nuclear power (mostly seamless).
  • Heavy oil refineries.
  • Bitumen upgraders.
  • Petrochemicals and acids.
Export to India, Dubai, Ukraine, Thailand, Egypt, Indonesia, Ireland, Canada, USA, Spain, Singapore, Peru, Brazil, Oman, Iran, Korea, Saudi Arabia etc
Class 2500 Flanges Application
  • To Connect Pipe & Tubes in Chemical, Petroleum, Power, Gas, Construction,Shipbuilding, Metallurgy etc
Material Test Certificates (MTC) as per EN 10204 3.1 and EN 10204 3.2, Test Certificates certifying NACE MR0103, NACE MR0175

 

Pressure Rating of Class 2500 Flange

Rating Of Carbon Steel Flanges

The Table Shows The Maximum Pressure In PSI ASTM A105 / ASTM A350 LF2 / ASTM A350 LF3 / ASTM A350 LF6

Temperature (in F°)
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

 

Dimensions of Class 2500 Flange

Class 2500 LB Flange Dimensions In mm

Dimensions of Class 2500 Flange

 

Normal
pipe
size		 Outside
dia. of
flange		 Minimum 
thickness
of flange		 Overall          Length Bolt 
Circle		 No. and 
Size of 
Holes		 O.D. 
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

 

Free online 2500 Lb Rtj Flange Dimensions

Rating In Bars
TEMP C°
2500#
  
-29 / 38
425.5
50
417.7
100
388.3
150
375.6
200
365
250
349.5
300
331.8
325
322.6
350
313
375
303.1
400
289.3
425
239.7
450
191.7
475
145.3
500
97.9
538
49.2

 

Rating of Stainless Steel Flanges

Flanges Pressure Rating in Bars ANSI flanges (ASTM A182 F304L / ASTM A182 F316L)

TEMP C°
2500#
-29 TO 38
344.7
50
333.5
100
289.9
150
261.6
200
243
250
228.9
300
217.2
325
212.3
350
208.9
375
206.3
400
202.5
425
198.8
450
195.1

 

Find here 2500 Lb Blind Flange Dimensions
Check 2500 Lb Weld Neck Flange Dimensions