ASME B16.5 Flange

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In order to determine the size and weight of forged flanges, use the ANSI B16.5 Class 2500 chart.


What is ASME B16.5 Flange?
Flanges and flanged fittings are essentially the only items covered by the ASME B16.5 specification. They are either cast from metal or forged from metal. The provided material specs can be used to create a variety of flange types. They are made of plate material and come in various pressure classes. Additionally, the standard complies with advice and specifications for flange bolting, flange joints, and flange gasket.
The equipment is utilised in accordance with the ASME B16.5 Flanges standard, which is covered in the other volumes of the ASME B16 series standards. For instance, the boiler or pressure vessel code and B31 pipeline code both use ANSI B16.5 forged flanges of pressure class 150.

What are the Types of Flanges?
There are several types of flanges like:

  • Weld neck flange- These are used in applications that involve severe and critical conditions.
  • Slip-on flange- They are suitable for low pressure applications.
  • Blind flange- They help to seal the ends of a piping system or pressure vessel opening.
  • Socket weld flange- These are used in small and high pressure pipes.
  • Threaded flange- They are used in pipes with threaded ends.
  • Reducing flange- These help in connecting one pipe to the other.

Why are flanges needed in piping?
To finish the pipeline system, the flanges are generally utilised to join pipes, valves, pumps, and other pieces of machinery. To join with the pipe, flanges can be threaded or weld together. A gasket can also be used to bolt two flanges together, providing a secure seal that will allow the pipe system to function effectively.

ASME B16.5 Class 300 Flanges Vs ASME Class 600 Flanges
Pressure classes are the main distinction between ASME B16.5 Class 300 Flanges and ASME Class 600 Flanges. Except for the bore, their proportions differ. In comparison to class 300 flanges, class 600 flanges are heavier and have higher pressure ratings. Both of the flanges have a distinct outer diameter.

ASME B16.5 Flanges Vs ANSI B16.5 Flanges
The differences between ASME B16.5 Flanges and ANSI B16.5 Flanges, are:

  • ASME flanges are basically based on standards and codes given for different mechanical devices, whereas for ANSI flanges, they are manufactured according to the standards given by the organization.
  • The ASME flanges are manufactured on standards and 600 codes for various types of mechanical devices. The ANSI flanges are manufactured based on around 9500 standards.
  • The ASME flanges works to find out real-time solutions to various problems related to mechanical engineering. But, for ANSI flanges, they are produced mainly for business and commercial purposes.
ASME B16.5 Flange

ASME B16.5 Flange

Mumbai-based manufacturer of ASME B16.5 material, certified under European Directive 2014/68/eu, is able to distribute more than 1000 tonnes per year; see sorts of forged steel flange and pressure rating chart.


Dimensions  ASME B16.5, ASME B16.47 Series A & B, MSS SP44
Size 1/2" to 48"
JIS 5K, 16 K 10 K, 20 K, 40 K, 30 K, 63 K
Class 300 LBS, 150 LBS, 900 LBS, 600 LBS, 1500 LBS, 2500 LBS
UNI 6Bar 16Bar 10Bar 25Bar 40Bar
Flange Face Type Provided By Manufacturer RF (Raised Face), RTJ (Ring Type Joint)
EN 6Bar 25Bar 10Bar 40Bar 16Bar
BS BS4504 , BS4504, BS1560, BS10
Value Added Services CNC Machining, Customised Flange
Making Methods Provided By Manufacturer Casting And Forging
Rolling And Cutting
Outer diameters 1/2” to 24”
Flanges Test Hydrostatic testing machine/ UI trasonic flaw detector/ X-ray detector/ Direct-reading Spectrograph/ Magnetic particle detector
Coating/Surface Treatment By Manufacturer Antirust Paint, Oil Black Paint, Yellow Transparent, Zinc Plated, Cold and Hot Dip Galvanized
Standards Provided By Manufacturer EN-1092, DIN, API7S-43, API605, B16.48, ISO70051, MSS S44, ANSI/ASME B16.5, B16.47 Series A & B, BS4504, BS 10, API7S-15, JISB2220, BS1560-3.1, ASME/ANSI B16.5/16.36/16.47A/16.47B, EN1092
Flanges Equipment Pushing Machine/ electric bevelling machine/ Press machine/ Bending machine/ Sand-blasting machine etc

Distributors, dealers, wholesalers, suppliers, importers, stockholders, exporters, stockists, and manufacturers of ASME B16.5 flanges well recognised in Mumbai

NPS DN
1 25
 1 1/2 40
1 1/4 32
1/2 15
2 50
2 1/2 65
3 80
3/4 20
4 100
Stainless Steel ASTM A182 Gr. 304, 304L, 309, 316, 310, 316L, 317L, 321, 347, 904L
Carbon Steel High Yield CS ASTM A694 / A694 (F52 F56 F60 F65 F70 F80), A181 LF2, A105N, ASTM A350 LF2 / ASME SA350, ASTM/ASME A/SA105 A/SA105N & ASTM A105 / ASME SA105, P235GH, P245GH, P250GH, RST37.2, C22.8, S235JR, ST37, A516 Gr.70 A36, A694 F42, F46, F52, F60, F65, F706
Duplex Steel ASTM A 182, ASME SA 182 UNS NO S31803, S32205. Werkstoff No. 1.4462
Nickel Alloy ASTM / ASME SB 564 UNS 4400 (MONEL 400 ), UNS 2200 ( NICKEL 200 ), UNS 8825 INCONEL (825), UNS 2201 (NICKEL 201 ), UNS 8020 ( ALLOY 20 / 20 CB 3, UNS 6601 ( INCONEL 601 ), UNS 6625 (INCONEL 625), UNS 6600 (INCONEL 600 ), UNS 10276 ( HASTELLOY C 276 )
Copper Nickel Cupro Nickel 70/30 (C71500), Copper Nickel 90/10 (C70600 ), ASTM / ASME SB 62 / 151 / 61 / 152, UNS C71640
Alloy Steel F11, F12, F5, F9, F22, F91
Other Titanium, Aluminium, 254 SMO

Safely Pressure Test is provided by the supplier of ASME B16.5 Standard Pipe Flanges to guarantee strength and quality.

ASME B16.5 Flange Price Per Piece in India ASME B16.5 Pipe Flanges Price in INR ANSI B16.5 Flanges Price in UAE Dirham ASME B16 5 Flanges Price in USD
DUPLEX SS FLANGES LWNRF SA182 GR. F51 (UNSS31803) NPS 2 (DN 50) X 19.5 MM THK X CLASS 600 ASME B16.5 HUB OD 84 MM X ID 45 Per Unit 17,801 UAE Dirham 877.08 $238.76
FLANGE 3/4 300 SCH 160 WNRF A105N ASME B16.5 Per Unit 830 UAE Dirham 40.90 $11.13
304L FLANGES WELDNECK SS FORGED 3CLS 150 SCH 40S RF ASME B16.5 Per Kg 1,743 UAE Dirham 85.86 $23.38

Compare our prices to those of Indian manufacturers of forged flanges before making a purchase. The price of an ANSI B16.5 Class 150 Flange in India is approximately what is shown here. For the most latest Mumbai stocklist of ASME B16.5 Swivel Flange, please contact us. The top provider of forged steel flanges in India is Raaj Sagar Steels.

C22.8 P250GH A105 SA105
15Mo3 16Mo3
13CrMo44 13CrMo4-5 A182F12 SA182F12
10CrMo910 11CrMo9-10 A182F22 SA182F22
1.4901 A182F92 SA182F92 X10CrWMoVNb9-2
1.4903 A182F91 SA182F91 X10CrMoVNb9-1
1.4905 E911 X11CrMoVWNb9-11
1.4910 X6CrNiMoN17-12-2
1.4922 X20CrMoV11-1
1.4923 X22CrMoV12-1
1.4948 X6CNi18-10
1.4981 X8CrNiMoNb16-6
1.4988 X8CrNiMoVNb16-13
1.6311 20MnMoNi45
1.6368 WB36 15NiCuMoNb5
W/TSTE355 P355 A350LF2 SA350LF2
W/TSTE420 P420
W/TSTE460
12CrMo19.5 (V/G) A182/ F5 SA182/ F5
1.5637 12Ni14
1.7715 14MoV63
ST 52.3 S355J2 N
42CrMo4
25CrMo4
14MoV63
10Ni14 / 12Ni14
1.4021 X20Cr13
1.4057 X17CrNi16 2
1.4122 X39CrMo17 1
1.4301 A182/A479 304 SA182/SA479 304L X5CrNi18 10
1.4305 X8CrNiS18 9
1.4306 A182/A479 304 SA182/SA479 304L X2CrNi19 11
1.4307 X2CrNi18 9
1.4313 X3CrNiMo13 4
1.4401 X5CrNiMo17 12 2
1.4404 A182/A479 316 SA182/SA479 316L X2CrNiMo17 12 2
1.4410 A182/A479 F53 SA182/SA479 F53 S 32750 X2CrNiMoN25 7 4
1.4435 S 31603 X2CrNiMo18 14 3
1.4439 S 31726 X2CrNiMoN17 13 5
1.4462 A182/A479 F51 SA182/SA479 F51 S 31803 X2CrNiMoN22 5 3
1.4501 A182/A479 F55 SA182/SA479 F55 S 32760 X2CrNiMoCuWN25 7 4
1.4529 X1NiCrMoCuN25 20
1.4539 X1NiCrMoCu25 20 5
1.4541 A182/A479 321 SA182/SA479 321 X6CrNiTi18 10
1.4550 A182/A479 347 SA182/SA479 347 X6CrNiNb18 10
1.4571 A182/A479 316Ti SA182/SA479 316TI X6CrNiMoTi17 12 2
1.4713 X10CrAlSi7
1.4742 X10CrAlSi25
1.4828 X15CrNiSi20 12
1.4876 H/HT Alloy 800 H/HT X10NiCrAlTi32 20
1.4841 A182/A479 F321H X15CrNiSi25 21
1.4878 X8CrNiTi18 10
2.4360 Alloy 400 NiCu30Fe
2.4605 Alloy 59 NiCr23Mo16Al
2.4610 Hastelloy C4 NiMo16Cr16Ti
2.4617 Alloy B2 NiMo28
2.4660 Alloy 20 NiCr20CuMo
2.4663 Alloy 617 NiFe30Cr29Mo
2.4816 Alloy 600 NiCr15Fe
2.4819 Hastelloy C276 NiMo16Cr15W
2.4856 Alloy 625 NiCr22Mo9Nb
3.7035 Titan Grade2 Ti2
A182 F304H
A182 F321H
A182 F347H
A182 F1 SA182 F1
A182 F9 SA182 F9
A182 F11 SA 182 F11

ASME B16.5 Class 150 Flange Dimensions

Nominal Size Outside Diameter
(OD)
Min. Thickness
(T)
RF Dia.
(R)
No. of Bolt Holes Diameter of Holes Bolt Circle
(BC)
SO Flanges Bore ID
(SB)
WN Flanges Bore ID
(WB)
Dia. Hub Base
(HB)
Dia. of Hub Top
(HT)
SO Flanges LTH
(SL)
WN Flanges LTH
(WL)
12 3.50 0.38 1.38 4 0.62 2.38 0.88 0.62 1.19 0.84 0.56 1.81
34 3.88 0.44 1.69 4 0.62 2.75 1.09 0.82 1.50 1.05 0.56 2.00
1 4.25 0.50 2.00 4 0.62 3.12 1.36 1.05 1.94 1.32 0.62 2.12
114 4.62 0.56 2.50 4 0.62 3.50 1.70 1.38 2.31 1.66 0.75 2.19
112 5.00 0.62 2.88 4 0.62 3.88 1.95 1.61 2.56 1.90 0.81 2.38
2 6.00 0.69 3.62 4 0.75 4.75 2.44 2.07 3.06 2.38 0.94 2.44
212 7.00 0.81 4.12 4 0.75 5.50 2.94 2.47 3.56 2.88 1.06 2.69
3 7.50 0.88 5.00 4 0.75 6.00 3.57 3.07 4.25 3.50 1.12 2.69
312 8.50 0.88 5.50 8 0.75 7.00 4.07 3.55 4.81 4.00 1.19 2.75
4 9.00 0.88 6.19 8 0.75 7.50 4.57 4.03 5.31 4.50 1.25 2.94
5 10.00 0.88 7.31 8 0.88 8.50 5.66 5.05 6.44 5.56 1.38 3.44
6 11.00 0.94 8.50 8 0.88 9.50 6.72 6.07 7.56 6.63 1.50 3.44
8 13.50 1.06 10.62 8 0.88 11.75 8.72 7.98 9.69 8.63 1.69 3.94
10 16.00 1.12 12.75 12 1.00 14.25 10.88 10.02 12.00 10.75 1.88 3.94
12 19.00 1.19 15.00 12 1.00 17.00 12.88 12.00 14.38 12.75 2.12 4.44
14 21.00 1.31 16.25 12 1.12 18.75 14.14 13.25 15.75 14.00 2.19 4.94
16 23.50 1.38 18.50 16 1.12 21.25 16.16 15.25 18.00 16.00 2.44 4.94
18 25.00 1.50 21.00 16 1.25 22.75 18.18 17.25 19.88 18.00 2.62 5.44
20 27.50 1.62 23.00 20 1.25 25.00 20.20 19.25 22.00 20.00 2.81 5.62
22 29.50 1.75 25.25 20 1.38 27.25 22.22 21.25 24.25 22.00 3.07 5.82
24 32.00 1.81 27.25 20 1.38 29.50 24.25 23.25 26.12 24.00 3.19 5.94

ASME B16.5 Class 300 Flange Dimensions

Nominal Size
Outside Diameter
(OD)
Min. Thickness
(T)
RF Dia.
(R)
No. of Bolt Holes
Diameter of Holes
Bolt Circle
(BC)
SO Flanges Bore ID
(SB)
WN Flanges Bore ID
(WB)
Dia. Hub Base
(HB)
Dia. Hub Top
(HT)
SO Flanges LTH
(SL)
WN Flanges LTH
(WL)
12 3.75 0.50 1.38 4 0.63 2.62 0.88 0.62 1.50 0.84 0.81 2.00
34 4.62 0.56 1.69 4 0.75 3.25 1.09 0.82 1.88 1.05 0.94 2.19
1 4.88 0.62 2.00 4 0.75 3.50 1.36 1.05 2.12 1.32 1.00 2.38
114 5.25 0.69 2.50 4 0.75 3.88 1.70 1.38 2.50 1.66 1.00 2.50
112 6.12 0.75 2.88 4 0.88 4.50 1.95 1.61 2.75 1.90 1.13 2.63
2 6.50 0.81 3.62 8 0.75 5.00 2.44 2.07 3.31 2.38 1.25 2.69
212 7.50 0.94 4.12 8 0.88 5.88 2.94 2.47 3.94 2.88 1.44 2.94
3 8.25 1.06 5.00 8 0.88 6.62 3.57 3.07 4.62 3.50 1.63 3.06
312 9.00 1.12 5.50 8 0.88 7.25 4.07 3.55 5.25 4.00 1.69 3.13
4 10.00 1.19 6.19 8 0.88 7.88 4.57 4.03 5.75 4.50 1.82 3.32
5 11.00 1.31 7.31 8 0.88 9.25 5.66 5.05 7.00 5.56 1.94 3.82
6 12.50 1.38 8.50 12 0.88 10.62 6.72 6.07 8.12 6.63 2.00 3.82
8 15.00 1.56 10.62 12 1.00 13.00 8.72 7.98 10.25 8.63 2.38 4.32
10 17.50 1.81 12.75 16 1.12 15.25 10.88 10.02 12.62 10.75 2.56 4.56
12 20.50 1.94 15.00 16 1.25 17.75 12.88 12.00 14.75 12.75 2.82 5.06
14 23.00 2.06 16.25 20 1.25 20.25 14.14 13.25 16.75 14.00 2.94 5.56
16 25.50 2.19 18.50 20 1.38 22.50 16.16 15.25 19.00 16.00 3.19 5.69
18 28.00 2.31 21.00 24 1.38 24.75 18.18 17.25 21.00 18.00 3.44 6.19
20 30.50 2.44 23.12 24 1.38 27.00 20.20 19.25 23.12 20.00 3.69 6.32
22 33.00 2.57 25.25 24 1.63 29.25 22.22 21.25 25.25 22.00 3.93 6.43
24 36.00 2.69 27.62 24 1.63 32.00 24.25 23.25 27.62 24.00 4.13 6.56
At Unbeatable Prices, purchase rf/ ff/ rtj face ANSI B16.5 Class 150/ 300/ 600/ 900/ 1500/ 3000 in Mumbai.

ASME B16.5 Class 600 Flange Dimensions

Nominal Size
Outside Diameter
(OD)
Min. Thickness
(T)
RF Dia.
(R)
No. of Bolt Holes
Diameter of Holes
Bolt Circle
(BC)
SO Flanges Bore ID
(SB)
Dia. Hub Base
(HB)
Dia. Hub Top
(HT)
SO Flanges LTH
(SL)
WN Flanges LTH
(WL)
* WN Flanges Bore ID
(WB)
12 3.75 0.56 1.38 4 0.63 2.62 0.88 1.50 0.84 0.88 2.06 *
34 4.62 0.62 1.69 4 0.75 3.25 1.09 1.88 1.05 1.00 2.25 *
1 4.88 0.69 2.00 4 0.75 3.50 1.36 2.12 1.32 1.06 2.44 *
114 5.25 0.81 2.50 4 0.75 3.88 1.70 2.50 1.66 1.12 2.62 *
112 6.12 0.88 2.88 4 0.88 4.50 1.95 2.75 1.90 1.25 2.75 *
2 6.50 1.00 3.62 8 0.75 5.00 2.44 3.31 2.38 1.44 2.88 *
212 7.50 1.12 4.12 8 0.88 5.88 2.94 3.94 2.88 1.62 3.12 *
3 8.25 1.25 5.00 8 0.88 6.62 3.57 4.62 3.50 1.81 3.25 *
312 9.00 1.38 5.50 8 1.00 7.25 4.07 5.25 4.00 1.94 3.38 *
4 10.75 1.50 6.19 8 1.00 8.50 4.57 6.00 4.50 2.12 4.00 *
5 13.00 1.75 7.31 8 1.12 10.50 5.66 7.44 5.56 2.38 4.50 *
6 14.00 1.88 8.50 12 1.12 11.50 6.72 8.75 6.63 2.62 4.62 *
8 16.50 2.19 10.62 12 1.25 13.75 8.72 10.75 8.63 3.00 5.25 *
10 20.00 2.50 12.75 16 1.38 17.00 10.88 13.50 10.75 3.38 6.00 *
12 22.00 2.62 15.00 20 1.38 19.25 12.88 15.75 12.75 3.62 6.12 *
14 23.75 2.75 16.25 20 1.50 20.75 14.14 17.00 14.00 3.69 6.50 *
16 27.00 3.00 18.50 20 1.63 23.75 16.16 19.50 16.00 4.19 7.00 *
18 29.25 3.25 21.00 20 1.75 25.75 18.18 21.50 18.00 4.62 7.25 *
20 32.00 3.50 23.00 24 1.75 28.50 20.20 24.00 20.00 5.00 7.50 *
22 34.25 3.75 25.25 24 1.88 30.63 22.22 26.25 22.00 5.25 7.75 *
24 37.00 4.00 27.25 24 2.00 33.00 24.25 28.25 24.00 5.50 8.00 *

ASME B16.5 Class 900 Flange Dimensions

Nominal Size
Outside Diameter
(OD)
Min. Thickness
(T)
RF Dia.
(R)
No. of Bolt Holes
Diameter of Holes
Bolt Circle
(BC)
SO Flanges Bore ID
(SB)
* WN Bore ID
(WB)
Dia. Hub Base
(HB)
Dia. Hub Top
(HT)
SO Flanges LTH
(SL)
WN Flanges LTH
(WL)
3 9.50 1.50 5.00 8 1.00 7.50 3.57 * 5.00 3.50 2.12 4.00
4 11.50 1.75 6.19 8 1.25 9.25 4.57 * 6.25 4.50 2.75 4.50
5 13.75 2.00 7.31 8 1.38 11.00 5.66 * 7.50 5.56 3.12 5.00
6 15.00 2.19 8.50 12 1.25 12.50 6.72 * 9.25 6.63 3.38 5.50
8 18.50 2.50 10.63 12 1.50 15.50 8.72 * 11.75 8.63 4.00 6.38
10 21.50 2.75 12.75 16 1.50 18.50 10.88 * 14.50 10.75 4.25 7.25
12 24.00 3.12 15.00 20 1.50 21.00 12.88 * 16.50 12.75 4.63 7.88
14 25.25 3.38 16.25 20 1.63 22.00 14.14 * 17.75 14.00 5.12 8.38
16 27.75 3.50 18.50 20 1.75 24.25 16.16 * 20.00 16.00 5.25 8.50
18 31.00 4.00 21.00 20 2.00 27.00 18.18 * 22.25 18.00 6.00 9.00
20 33.75 4.25 23.00 20 2.13 29.50 20.20 * 24.50 20.00 6.25 9.75
24 41.00 5.50 27.25 20 2.63 35.50 24.25 * 29.50 24.00 8.00 11.50

ASME B16.5 Class 1500 Flange Dimensions

Nominal Size
Outside Diameter
(OD)
Min. Thickness
(T)
RF Dia.
(R)
No. of Bolt Holes
Diameter of Holes
Bolt Circle
(BC)
So Flanges Bore ID
(SB)
Dia. Hub Base
(HB)
Dia. Hub Top
(HT)
SO Flanges LTH
(SL)
WN Flanges LTH
(WL)
* WN Bore ID
(WB)
12 4.75 0.88 1.38 4 0.88 3.25 0.88 1.50 0.84 1.25 2.38 *
34 5.12 1.00 1.69 4 0.88 3.50 1.09 1.75 1.05 1.38 2.75 *
1 5.88 1.12 2.00 4 1.00 4.00 1.36 2.06 1.32 1.62 2.88 *
114 6.25 1.12 2.50 4 1.00 4.38 1.70 2.50 1.66 1.62 2.88 *
112 7.00 1.25 2.88 4 1.12 4.88 1.95 2.75 1.90 1.75 3.25 *
2 8.50 1.50 3.63 8 1.00 6.50 2.44 4.12 2.38 2.25 4.00 *
212 9.62 1.62 4.13 8 1.12 7.50 2.94 4.88 2.88 2.50 4.12 *
3 10.50 1.88 5.00 8 1.25 8.00 - 5.25 3.50 - 4.62 *
4 12.25 2.12 6.19 8 1.38 9.50 - 6.38 4.50 - 4.88 *
5 14.75 2.88 7.31 8 1.63 11.50 - 7.75 5.56 - 6.12 *
6 15.50 3.25 8.50 12 1.50 12.50 - 9.00 6.63 - 6.75 *
8 19.00 3.62 10.63 12 1.75 15.50 - 11.50 8.63 - 8.38 *
10 23.00 4.25 12.75 12 2.00 19.00 - 14.50 10.75 - 10.00 *
12 26.50 4.88 15.00 16 2.12 22.50 - 17.75 12.75 - 11.12 *
14 29.50 5.25 16.25 16 2.38 25.00 - 19.50 14.00 - 11.75 *
16 32.50 5.75 18.50 16 2.63 27.75 - 21.75 16.00 - 12.25 *
18 36.00 6.38 21.00 16 2.88 30.50 - 23.50 18.00 - 12.88 *
20 38.75 7.00 23.00 16 3.12 32.75 - 25.25 20.00 - 14.00 *
24 46.00 8.00 27.25 16 3.63 39.00 - 30.00 24.00 - 16.00 *

ASME B16.5 Class 2500 Flange Dimensions

Nominal Size
Outside Diameter
(OD)
Min. Thickness
(T)
RF Dia.
(R)
No. of Bolt Holes
Diameter of Holes
Bolt Circle
(BC)
Dia. Hub Base
(HB)
Dia. Hub Top
(HT)
SO Flanges LTH
(SL)
WN Flanges LTH
(WL)
* WN Bore ID
(WB)
12 5.25 1.19 1.38 4 0.88 3.50 1.69 0.84 1.56 2.88 *
34 5.50 1.25 1.69 4 0.88 3.75 2.00 1.05 1.69 3.12 *
1 6.25 1.38 2.00 4 1.00 4.25 2.25 1.32 1.88 3.50 *
114 7.25 1.50 2.50 4 1.12 5.13 2.88 1.66 2.06 3.75 *
112 8.00 1.75 2.88 4 1.25 5.75 3.12 1.90 2.38 4.38 *
2 9.25 2.00 3.63 8 1.12 6.75 3.75 2.38 2.75 5.00 *
212 10.50 2.25 4.13 8 1.25 7.75 4.50 2.88 3.12 5.62 *
3 12.00 2.62 5.00 8 1.38 9.00 5.25 3.50 - 6.62 *
4 14.00 3.00 6.19 8 1.63 10.75 6.50 4.50 - 7.50 *
5 16.50 3.62 7.31 8 1.88 12.75 8.00 5.56 - 9.00 *
6 19.00 4.25 8.50 8 2.12 14.50 9.25 6.63 - 10.75 *
8 21.75 5.00 10.63 12 2.12 17.25 12.00 8.63 - 12.50 *
10 26.50 6.50 12.75 12 2.63 21.25 14.75 10.75 - 16.50 *
12 30.00 7.25 15.00 12 2.88 24.38 17.38 12.75 - 18.25 *
  • Stock Flange Finish
  • Spiral Serrated Finish
  • Concentric Serrated Finish
  • Smooth Finish
  • Cold Water Finish
Check ASME B16.5 Swivel Flange, Female Flanges and Large Male Flange temperature & price in India

(a). Center-to-Contract Surfaces other than Ring Joint Flange

Size Tolerance
NPS ≤ 10 +/- 1.0 mm (+/- 0.03 in.)
NPS ≤ 12 +/- 1.5 mm (+/- 0.06 in.)

(b). Center-to-End (Ring Joint Flange)

Size Tolerance
NPS ≤ 10 +/- 1.0 mm (+/- 0.03 in.)
NPS ≤ 12 +/- 1.5 mm (+/- 0.06 in.)

(c). Center surface-to-Contact surface other than ring joint Flange

Size Tolerance
NPS ≤ 10 ±2.0 mm(±0.06 in.)
NPS ≥ 12 ±3.0 mm(±0.12 in.)

(d). End-to-End

Size Tolerance
NPS ≤ 10 ±2.0 mm(±0.06 in.)
NPS ≥ 12 ±3.0 mm(±0.12 in.)
Nominal Pipe Size Threaded Flange Blind Flange Slip On Flange Socket Weld Flange Lap Joint Flange Weld Neck Flange
½ 1 2 1 2 1 2
¾ 2 2 2 2 2 2
3 3 3 3 3 3
3 4 3 3 3 4
1 2 2 2 2 2 3
2 5 5 5 5 5 6
3 9 9 9 9 9 11.5
12 13 11 11 11 12
8 7 8 8 8 10
4 13 17 13 13 13 16.5
5 15 20 15 15 15 21
6 19 27 19 19 19 26
8 30 47 30 30 30 42
10 43 70 43 43 43 54
14 90 140 90 90 105 114
16 98 180 106 98 140 140
12 64 123 64 64 64 88
18 130 220 130 130 160 165
20 165 285 165 165 195 197
22 185 355 185 185 245 225
24 220 430 220 220 275 268
Temperature (in F°) 150# 300# 400# 600# 900# 1500# 2500#
< 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
Hydrostatic Test Pressure (in Psig) 450 1125 1500 2225 3350 5575 9275
ASME B16.5 Flange

ASME B16.5 Flange

ANSI B16.5 Flange

ANSI B16.5 Flange

ASME B16.5 Swivel Flange

ASME B16.5 Swivel Flange

ASME B16 5 class 900 Flange

ASME B16 5 class 900 Flange

ASME B16.5 class 1500 Flange

ASME B16.5 class 1500 Flange

ASME B16.5 Class 2500 Flange

ASME B16.5 Class 2500 Flange

ASME B16.5 class 3000 Flange

ASME B16.5 class 3000 Flange

ASME B16.5 Flanges

ASME B16.5 Flanges

Forged Steel Flange

Forged Steel Flange

ASME B16.5 Standard Pipe Flanges

ASME B16.5 Standard Pipe Flanges

ASME B16 5 class 150 Flange

ASME B16 5 class 150 Flange

ASME B16.5 Forged Flanges

ASME B16.5 Forged Flanges

ASME B16.36 Orifice Flange

ASME B16.36 Orifice Flange

Class 150 Orifice Flange

Class 150 Orifice Flange

ASME B16.5 Reducing Flange

ASME B16.5 Reducing Flange

Class 300 Reducing Flange

Class 300 Reducing Flange

Flat Flange

Flat Flange

ASME B16.5 Flat Face Flange

ASME B16.5 Flat Face Flange

ASME B16.5 Square Flange

ASME B16.5 Square Flange

Black Pipe Square Flange

Black Pipe Square Flange

Expander Flange

Expander Flange

Expander Weld Neck Flange

Expander Weld Neck Flange

Pipe Expander Flange

Pipe Expander Flange

Aluminum Square Flange

Aluminum Square Flange

Groove & Tongue Flanges

Groove & Tongue Flanges

Large Tongue Groove Flange

Large Tongue Groove Flange

ASME B16.5 Groove & Tongue Flange

ASME B16.5 Groove & Tongue Flange

High Hub Blind Flange

High Hub Blind Flange

Forging Facing Flange

Forging Facing Flange

Stainless Steel Forging Flange

Stainless Steel Forging Flange

KOC Approved Flange

KOC Approved Flange

EIL Approved Flange

EIL Approved Flange

IBR Approved Flangee

IBR Approved Flange

PED Approved Flange

PED Approved Flange

KNPC Approved Flange

KNPC Approved Flange

ADNOC Approved Flange

ADNOC Approved Flange

NPS A B
1/2 3.0 1.5
3/4 3.0 1.5
1 3.0 1.5
1-1/4 3.0 1.5
1-1/2 3.0 1.5
2 3.0 1.5
2-1/2 3.0 1.5
3 4.5 1.5
3-1/2 6.0 3.0
4 6.0 3.0
5 6.0 3.0
6 6.0 3.0
8 8.0 4.5
10 8.0 4.5
12 8.0 4.5
14 8.0 4.5
16 10.0 4.5
18 12.0 6.0
20 12.0 6.0
22 12.0 6.0
24 12.0 6.0

ASME B16.5 stands for American Society of Mechanical Engineers B16.5 standard and it defines the following:

  • Dimensions
  • Tolerances
  • Materials
  • Markings
  • Pressure/Temperature Ratings
  • Pressure Testing
Size Tolerance
NPS ≤ 18 +3.0, -0.0 mm (+0.12,-0.00 in.)
NPS ≥ 20 +5.0, -0.0 mm (+0.19,-0.00 in.)
  • DIN Flanges
  • DIN Pipe Flanges
  • DIN Pn 10 Flanges
  • DIN Pn40 Flanges
  • DIN Plate Flanges
  • DIN PN10 Flanges
  • DIN 2501 Flange
  • DIN 2627 Flanges
  • DIN 2633 Flanges
  • BS 10 Flanges
  • BS 10 Table E Flanges
  • ISO Flanges
  • ISO Kf Flanges
  • French NFE 29203 Flanges
  • Australian Flanges
  • Norwegian Flanges
  • NS 2548 Flange
  • Swiss VSM Flange
  • Korean Flanges
Nominal Hose Size Weight of Fitting

Fitting Length A
ASA150

Flared Diameter D
ASA150
Fitting Inside Diameter I
ASA150
†3A
in mm in mm in mm in mm in mm
1 25 1.20 2.63 2.36 60.00 2.00 50.80 0.85 21.50
1 1/4 32 1.59 3.50 2.67 67.72 2.50 63.50 1.03 26.21
1 1/2 40 2.15 4.73 2.75 69.86 2.87 73.00 1.25 31.75
1/2 13 0.57 1.25 1.67 42.50 1.38 35.00 0.37 9.40
3/4 20 0.84 1.84 1.86 47.24 1.69 42.90 0.62 15.75
2 50 2.92 6.41 3.20 81.22 3.62 92.00 1.76 44.60
21/2 65 4.36 9.59 3.70 94.00 4.13 105.00 2.25 57.15
3 80 6.02 13.24 3.74 95.00 5.00 127.00 2.63 66.70
Flange Inspection and Test Plan Task Client TPI Inspection Vendor
Mill test reports(incl.heat treatment records,etc) R R H
Metallographic examination, if applicable R W H
Execution of heat treatment, if specified R W H
Visual and dimensional and thickness control R H H
Non-destructive testing (UT, MT or PT), if applicable R S/R H
Stamping, marking and color coding check R W H
Documentation review prior to release(Final activity of Technical Inspection) R H H
Final visual inspection including packaging and quantity control R H H
Pre-shipment Inspection H H H
  • H: Hold Point denotes that relevant manufacturing operations will be halted until Purchaser approves the continuation of work.
  • W: Witness point denotes that the purchaser wants to observe the specified inspection feature.
  • S: Eyewitness testimony, but on a case-by-case basis. The initial operation will be a witness point, and subsequent operations will be observed at the Purchaser's discretion based on the outcomes of the preceding inspection.
  • R: Examine inspection and test records

Shell Pressure Test for Flanged Fittings

When testing flanged fittings, the shell pressure must be at least 1.5 times the pressure rating at 38 °C (100 °F), rounded up to the next higher increment of 1 bar (25 psi).

Test Duration

Flanged Fittings Size Duration, Sec
NPS ≤ 2 60
2 1/2 ≤ NPS ≤ 8 120
NPS ≥ 10 180
Petrochemical Corporation Of Singapore - Singapore

Petrochemical Corporation Of Singapore - Singapore

REPSOL Oil & Gas Malaysia Limited - Malaysia

REPSOL Oil & Gas Malaysia Limited - Malaysia