ASME B16.5 Flanges

ASME B16.5 Socket Weld Flanges, ASME B16.5 Orifice Flange, ASME B16.5 weld neck Flange, ASME B16.5 slip on Flanges Supplier, ANSI B16.5 Threaded Flanges, ASME B16.5 Spectacle blind Flanges Manufacturer in India.

ANSI, ASME, and ASA B16.5 are all standards that specify the dimensions and technical requirements for flanges used in piping systems. Here is a brief overview of each standard:

ANSI B16.5: The American National Standards Institute (ANSI) B16.5 standard covers steel pipe flanges and flanged fittings from NPS 1/2 through NPS 24. It includes requirements for flange facings, bolting, gaskets, and tolerances.

ASME B16.5: The American Society of Mechanical Engineers (ASME) B16.5 standard is identical to ANSI B16.5 and covers the same range of sizes and types of flanges.

ASA B16.5: The American Standards Association (ASA) B16.5 standard is the precursor to ANSI B16.5 and is now obsolete. However, the term “ASA” is still sometimes used colloquially to refer to flanges that comply with ANSI B16.5.

All three standards specify flange dimensions in inches and use the same pressure-temperature ratings for class 150, 300, 600, 900, 1500, and 2500. However, there are some minor differences in the dimensions of the flange faces and bolt circles between the standards. It is important to use the correct standard when selecting flanges for a piping system to ensure proper compatibility and performance.

ASME B16.5 Flanges, ANSI B16.5 Flange in India, United States, UAE

ASME B16 5 Ring Type Joint Orifice Flange, ASME B16.5 Class 300 Flanges, ANSI B16.5 Class 150 Flanges, Ready Stock of ASME B16.5 Socket Weld Flange, Suppliers of ASA B16.5 Welding Neck Flange, Check Sizes And Dimensions Of ASME B16.5 Forged Flanges.

ASME B16.5 Flange Specifications

Size Range

1/2" (15 NB) to 48" (1200NB) DN10~DN5000

Class / Pressure Rating

150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.

Standards / Dimensions

ANSI/ASME B16.5, B16.36, B16.48, BS4504, BS 10, EN-1092, DIN, BS, GOST, MSS SP-44, ISO70051, JISB2220, BS1560-3.1, API7S-15, API7S-43, API605

Connection Type

Ring Joint Flange (RTJ), Flat Face Flange (FF), Raised Face Flange (RF), Male and Female Flange (M & F), Lap Joint Flange, Large and Small Tongue-and-Groove Flange (T & G)

ASME B16.5 Flanges Dimensions

ASME B16.5 Flanges Class 150ASME B16.5 Flanges Class 300
ASME B16.5 Flanges Class 400ASME B16.5 Flanges Class 600
ASME B16.5 Flanges Class 900ASME B16.5 Flanges Class 1500
ASME B16.5 Flanges Class 2500
ASME B16.5 CLASS 150 RTJ FACING FLANGES DIMENSIONS AND TECHNICAL DRAWINGS
ASME B16.5 CLASS 150 RTJ Facing Flanges
NPSNPEF
11547.636.358.74
1-1/41757.156.358.74
1-1/21965.076.358.74
22282.556.358.74
2-1/225101.606.358.74
329114.306.358.74
3-1/233131.786.358.74
436149.236.358.74
540171.456.358.74
643193.686.358.74
848247.656.358.74
1052304.806.358.74
1256381.006.358.74
1459396.886.358.74
1664454.036.358.74
1868517.536.358.74
2072558.806.358.74
2280615.956.358.74
2476673.106.358.74
NPSrGhL
10.863.5475
1-1/40.873.0485
1-1/20.882.5485
20.8102495
2-1/20.81214100
30.81334100
3-1/20.81544100
40.81714100
50.81944110
60.82194115
80.82734120
100.83304125
120.84064135
140.84253145
160.84833145
180.85463160
200.85973170
220.86483185
240.87113185
ASME B16.5 CLASS 300 RTJ FACING FLANGES DIMENSIONS AND TECHNICAL DRAWINGS
ASME B16.5 CLASS 300 RTJ Facing Flanges
NPSGroove No.PEF
1/21134.145.547.14
3/41342.886.358.74
11650.806.358.74
1-1/41860.336.358.74
1-1/22068.276.358.74
22382.557.9211.91
2-1/226101.607.9211.91
330117.487.9211.91
3-1/234131.787.9211.91
437149.237.9211.91
541180.987.9211.91
645211.127.9211.91
849269.887.9211.91
1053323.857.9211.91
1257381.007.9211.91
1461419.107.9211.91
1665469.907.9211.91
1869533.407.9211.91
2073584.209.5313.49
2281635.0011.1315.09
2477629.1511.1316.66
NPSrGhL
1/20.851.0375
3/40.863.5490
10.870.0490
1-1/40.879.5495
1-1/20.890.54100
20.81086100
2-1/20.81276115
30.81466120
3-1/20.81596125
40.81756125
50.82106135
60.82416140
80.83026150
100.83566170
120.84136185
140.84576190
160.85086205
180.85756210
201.56356220
221.56866255
241.57496255

Find the largest ready stock of ASME B16.5 Class 900 Flanges, ASME B16.5 Slip On Flanges Dealer, Check Availability of B16.5 Threaded Flanges, ASME B16.5 Flange Price List, ASME B16.5 Reducing Flanges Stockist, ASME B16.5 RF Flanges Supplier, ASME B16.5 Forged Flanges in Mumbai, India.

ASME B16.5 CLASS 400 RTJ FACING FLANGES DIMENSIONS AND TECHNICAL DRAWINGS
ASME B16.5 CLASS 400 RTJ Facing Flanges
NPSGroove No.PEF
1/21134.145.547.14
3/41342.886.358.74
11650.806.358.74
1-1/41860.336.358.74
1-1/22068.276.358.74
22382.557.9211.91
2-1/226101.607.9211.91
330117.487.9211.91
3-1/234131.787.9211.91
437149.237.9211.91
541180.987.9211.91
645211.127.9211.91
849269.887.9211.91
1053323.857.9211.91
1257381.007.9211.91
1461419.107.9211.91
1665469.907.9211.91
1869533.407.9211.91
2073584.209.5313.49
2281635.0011.1315.09
2477692.1511.1316.66
NPSrGhL
1/20.851.0375
3/40.863.5490
10.870.0490
1-1/40.879.5495
1-1/20.890.54110
20.81085110
2-1/20.81275120
30.81465125
3-1/20.81595140
40.81756140
50.82106145
60.82416150
80.83026170
100.83566190
120.84136205
140.84576210
160.85086220
180.85756230
201.56356250
221.56866260
241.57496280
ASME B16.5 CLASS 600 RTJ FACING FLANGES DIMENSIONS AND TECHNICAL DRAWINGS
ASME B16.5 CLASS 600 RTJ Facing Flanges
NPSGroove No.PEF
1/21134.145.547.14
3/41342.886.358.74
11650.806.358.74
1-1/41860.336.358.74
1-1/22068.276.358.74
22382.557.9211.91
2-1/226101.607.9211.91
330117.487.9211.91
3-1/234131.787.9211.91
437149.237.9211.91
541180.987.9211.91
645211.127.9211.91
849269.887.9211.91
1053323.857.9211.91
1257381.007.9211.91
1461419.107.9211.91
1665469.907.9211.91
1869533.407.9211.91
2073584.209.5313.49
2281635.0011.1315.09
2477692.1511.1316.66
NPSrGhL
1/20.851.0375
3/40.863.5490
10.870.0490
1-1/40.879.5495
1-1/20.890.54110
20.81085110
2-1/20.81275120
30.81465125
3-1/20.81595140
40.81755145
50.82105165
60.82415170
80.83025195
100.83565215
120.84135220
140.84575235
160.85085255
180.85755275
201.56355290
221.56866310
241.57496335
ASME B16.5 CLASS 900 RTJ FACING FLANGES DIMENSIONS AND TECHNICAL DRAWINGS
ASME B16.5 CLASS 900 RTJ Facing Flanges
NPSGroove No.PEF
1/21239.676.358.74
3/41444.456.358.74
11650.806.358.74
1-1/41860.336.358.74
1-1/22068.276.358.74
22495.257.9211.91
2-1/227107.957.9211.91
331123.837.9211.91
437149.237.9211.91
541180.987.9211.91
645211.127.9211.91
849269.887.9211.91
1053323.857.9211.91
1257381.007.9211.91
1462419.1011.1316.66
1666469.9011.1316.66
1870533.4012.7019.84
2074584.2012.7019.84
2478692.1515.8826.97
NPSrGhL
1/20.860.54110
3/40.866.54115
10.871.54125
1-1/40.881.04125
1-1/20.892.04140
20.81243145
2-1/20.81373160
30.81564145
40.81814170
50.82164190
60.82414195
80.83084220
100.83624235
120.84194255
141.54674280
161.55244290
181.55945335
201.56485360
242.47726455
ASME B16.5 CLASS 1500 RTJ FACING FLANGES DIMENSIONS AND TECHNICAL DRAWINGS
ASME B16.5 CLASS 1500 RTJ Facing Flanges
NPSGroove No.PEF
1/21239.676.358.74
3/41444.456.358.74
11650.806.358.74
1-1/41860.336.358.74
1-1/22068.276.358.74
22495.257.9211.91
2-1/227107.957.9211.91
335136.537.9211.91
439161.937.9211.91
544193.687.9211.91
646211.149.5313.49
850269.8811.1316.66
1054323.8511.1316.66
1258381.0014.2723.01
1463419.1015.8826.97
1667469.9017.4830.18
1871533.4017.4830.18
2075584.2017.4833.32
2479692.1520.6236.53
NPSrGhL
1/20.860.54110
3/40.866.54115
10.871.54125
1-1/40.881.04125
1-1/20.892.04140
20.81243145
2-1/20.81373160
30.81683180
40.81943195
50.82293250
61.52483265
81.53184300
102.43714345
122.44385385
142.44896425
162.45468470
182.46138525
202.467310565
242.479411650
ASME B16.5 CLASS 2500 RTJ FACING FLANGES DIMENSIONS AND TECHNICAL DRAWINGS
ASME B16.5 CLASS 2500 RTJ Facing Flanges
NPSGroove No.PEF
1/21342.886.358.74
3/41650.806.358.74
11860.336.358.74
1-1/42172.237.9211.91
1-1/22382.557.9211.91
226101.607.9211.91
2-1/228111.139.5313.49
332127.009.5313.49
438157.1811.1316.66
542190.5012.7019.84
647228.6012.7019.84
851279.4014.2723.01
1055342.9017.4830.18
1260406.4017.4833.32
>
NPSrGhL
1/20.865.04120
3/40.873.04125
10.882.54140
1-1/40.81023150
1-1/20.81143170
20.81333180
2-1/21.51493205
31.51683230
41.52034260
51.52414310
61.52794355
81.53405395
102.44256510
122.44958560

ASME B16.5 Flanges Weight Chart

CLASSNominal Pipe SizeSlip OnThreadedSocket WeldLap JointBlindWeld Neck
150 lb½112122
¾222222
1222223
333333
333344
2555556
8888710
39999911.5
111211111312
4131313131716.5
5151515152021
6191919192726
8303030304742
10434343437054
126464646412388
14909090105140114
161069898140180140
18130130130160220165
20165165165195285197
22185185185245355225
24220220220275430268
CLASSNominal Pipe SizeSlip OnThreadedSocket WeldLap JointBlindWeld Neck
300 lb½223222
¾333333
1333344
4.54.544.565
6.56.566.577
2777789
101010101212
313141314.51618
171717172120
423.52422242826.5
5293128283736
6393939395045
8585858588169
1081818191124100
12115115115140185142
14165165165190250206
16210220190234315250
18253280250305414320
20315325315375515400
22370370370435640465
24490490475550800580
CLASSNominal Pipe SizeSlip OnThreadedSocket WeldLap JointBlindWeld Neck
400 lb½222223
¾333333.5
13.53.53.53.544
4.54.54.54.564.5
6.56.56.56.588
288881010
121212111514
3151515142018
212121202926
4262626253335
5313131294443
6444444426157
86767676410089
10919191110155125
12130130130152226175
14191191191210310233
16253253253280398295
18310310310345502360
20378378378420621445
22405405405455720505
24539539539615936640
CLASSNominal Pipe SizeSlip OnThreadedSocket WeldLap JointBlindWeld Neck
600 lb½222233
¾333344
1444444
555566
777788
299991012
131313121518
3161616152023
212121202926
4373737364142
5636363636868
6808080788681
8115115115112140120
10177177177195231190
12215215215240295226
14259259259290378347
16366366366400527481
18476476476469665555
20612612612604855690
225905905906701000720
248768768768661250977
CLASSNominal Pipe SizeSlip OnThreadedSocket WeldLap JointBlindWeld Neck
900 lb½666647
¾666667
17.57.57.57.598.5
101010101010
141414141414
2222222212524
313131253231
3363636293536
4535353515453
5838383818786
6110110110105115110
8172172172190200187
10245245245277290268
12326326326371415372
14400400400415520562
16459459459488619685
18647647647670880924
2079279279286811071164
24148014801480165920992107
CLASSNominal Pipe SizeSlip OnThreadedSocket WeldLap JointBlindWeld Neck
1500 lb½666647
¾666667
1888899
101010101010
141414141414
2252525252525
363636353536
3484848474848
4737373757373
5132132132140140132
6165165165170160165
8260260260286302275
10436436436485510455
12667667667749775690
14940940940890975940
16125012501250125013001250
18162516251625147517501625
20205020502050177522252050
24282528252825282536253325
CLASSNominal Pipe SizeSlip OnThreadedSocket WeldLap JointBlindWeld Neck
2500 lb½….7….778
¾….9….8109
1….12….121213
….18….171820
….25….242528
2….38….373942
….55….535652
3….83….808694
4….127….122133146
5….210….204223244
6….323….314345378
8….485….471533576
10….925….89710251068
12….1300….126214641608

ASME B16.5 Flanges Tolerances

DIMENSIONAL TOLERANCES ■ ASME B16.5
WELDING NECK FLANGES
0Outside DiameterWhen 0 is 24″ or less±0.06″±1.6 mm
When O is over 24”±0.12″±3.2 mm
RDiameter of Contact Face0.06” (1.6 mm) raised face±0.03″±0.8 mm
0.25″ (6.4 mm) raised face±0.02″±0.5 mm
ADiameter of Hub at Point of WeldingNPS 5 and smaller+0.09″, -0.03″+2.4 mm, -0.8 mm
NPS 6 and larger+0.16″, -0.03″+4.0 mm, -0.8 mm
BInside DiameterNPS 10 and smaller±0.03″±0.8 mm
NPS 12 to 18, inclusive±0.06″±1.6 mm
NPS 20 and larger+0.12″, -0.06”+3.2 mm, -1.6 mm
XDiameter of Hub at BaseWhen Hub Base is 24″ or less±0.06″±1.6 mm
When Hub Base is over 24″±0.12″±3.2 mm
cThicknessNPS 18 and smaller+0.12″, -0.00″+3.2 mm, -0.0 mm
NPS 20 and larger+0.19″, -0.00″+4.8 mm, -0.0 mm
DrillingBolt Circle Diameter±0.06″±1.6 mm
Bolt Hole Spacing±0.03″±0.8 mm
Eccentricity of Bolt Circle and Facing with Respect to BoreNPS 21/2 and smaller±0.03″±0.8 mm
NPS 3 and larger±0.06″±1.6 mm
Length Through HubNPS 10 and smaller±0.06″±1.6 mm
NPS 12 and larger±0.12″±3.2 mm
SLIP-ON, LAP JOINT, SOCKET WELDING, THREADED and BLIND FLANGES
OOutside DiameterWhen O is 24″ or less
When O is over 24″
±0.06″ ±0.12″±1.6 mm
±3.2 mm
RDiameter of Contact Face0.06″ (1.6 mm) raised face 0.25″ (6.4 mm) raised face±0.03″ ±0.02″±0.8 mm
±0.5 mm
BInside Diameter at Face of Socket Welding Flanges

Inside Diameter of Slip-On, Lap Joint, and Socket Welding

NPS 10 and smaller
NPS 12 through 18, inclusive NPS 20 and larger
±0.03″ ±0.06″ +0.12″, -0.06″±0.8 mm
±1.6 mm
+3.2 mm, -1.6 mm
NPS 10 and smaller
NPS 12 and larger
+0.03″, -0.00″ +0.06″, -0.00″+0.8 mm, -0.0
+1.6 mm, -0.0 mm
QCounterbore, Threaded FlangesNPS 10 and smaller
NPS 12 and larger
+0.03″, -0.00″ +0.06″, -0.00″+0.8 mm, -0.0
+ 1.6 mm, -0.0 mm
XDiameter of Hub at BaseNPS 12 and smaller
NPS 14 and larger
+0.09″, -0.06″ ±0.12″+2.4 mm, -1.6
±3.2 mm
cThicknessNPS 18 and smaller
NPS 20 and larger
+0.12″, -0.00″ +0.19″, -0.00″+3.2 mm, -0.0
+4.8 mm, -0.0 mm
DrillingBolt Circle Diameter Bolt Hole Spacing±0.06″ ±0.03″±1.6 mm
±0.8 mm
Eccentricity of Bolt Circle and Facing with Respect to BoreNPS 2V2 and smaller
NPS 3 and larger
±0.03″ ±0.06″±0.8 mm
±1.6 mm
Overall Length Through HubNPS 18 and smaller
NPS 20 and larger
+0.12”, -0.03”
+0.19”, -0.03”
+3.2 mm, -0.8 mm
+4.8 mm, -1.6 mm

ASME B16.5 Flanges Pressure And Temperature Ratings

Working Pressure (bar)
Temperature (°C)
Class
15030040060090015002500
-29 – 3819.851.768.9103.4155259431
5019.551.768.9103.4155259431
10017.751.568.7103.0155258429
15015.850.266.8100.3151251418
20013.848.664.897.2146243405
25012.146.361.792.7139232386
30010.242.957.085.7129214357
3259.341.455.082.6124207344
3508.440.053.480.0120200334
3757.437.850.475.7114189315
4006.534.746.369.4104174290
4255.528.838.457.586.3144240
4504.623.030.746.069.0115192
4753.717.122.834.251.385.4142
5002.811.615.423.234.757.996.5
5381.45.97.911.817.729.549.2

Pressure and Temperature Ratings – Group 1.1

Working Pressure (bar)
Temperature (°C)
Class
15030040060090015002500
-29 – 3819.651.168.1102.1153.2255.3425.5
5019.250.166.8100.2150.4250.6417.7
10017.746.662.193.2139.8233.0388.3
15015.845.160.190.2135.2225.4375.6
20013.843.858.487.6131.4219.0365.0
25012.141.955.983.9125.8209.7349.5
30010.239.853.179.6119.5199.1331.8
3259.338.751.677.4116.1193.6322.6
3508.437.650.175.1112.7187.8313.0
3757.436.448.572.7109.1181.8303.1
4006.534.746.369.4104.2173.6289.3
4255.528.838.457.586.3143.8239.7
4504.623.030.746.069.0115.0191.7
4753.717.423.234.952.387.2145.3
5002.811.815.723.535.358.897.9
5381.45.97.911.817.729.549.2

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ASME B16.5 Flanges Applications

Australia, Afghanistan, Algeria, Angola, Argentina, Armenia, Azerbaijan, Bahrain, Bangladesh, Benin,
Bhutan, Botswana, Brazil, Brunei, Burkina Faso, Cambodia, Cameroon, Canada, Central Africa Republic,
Chad, Chile, Colombia, Cuba, Cyprus, DRC, Djibouti, Egypt, Equatorial Guinea, Eritrea, Eswatini,
Ethiopia, Fiji, Finland, France, Georgia, Germany, Ghana, Greece, Hungary, Iceland, Indonesia, Iran,
Iraq, Ireland, Israel, Italy, Japan, Jordan, Kazakhstan, Kenya, Kuwait, Kyrgyzstan, Laos, Lebanon,
Lesotho, Liberia, Libya, Lithuania, Madagascar, Malawi, Malaysia, Maldives, Mali, Mexico, Morocco,
Mozambique, Mauritania, Myanmar, Namibia, Nepal, Netherlands, New Zealand, Nigeria, Norway, Oman,
Panama, Peru, Philippines, Poland, Portugal, Palestine, Qatar, Russia, Rwanda, Romania, Saudi Arabia,
Senegal, Sierra Leone, Singapore, Slovakia, Somalia, South Africa, South Korea, South Sudan, Spain,
Sri Lanka, Sweden, Switzerland, Syria, Taiwan, Tajikistan, Tanzania, Tasmania, Thailand, The Gambia,
Timor-Leste, Togo, Tunisia, Turkey, Turkiye, Turkmenistan, Uganda, Uzbekistan, United Arab Emirates (UAE),
United Kingdom (UK), United States (US), Venezuela, Vietnam, Yemen, Zambia, Zimbabwe

Abu Dhabi, Amsterdam, Abuja, Accra, Addis Ababa, Ahmedabad, Algiers, Amman, Ankara, Antananarivo,
Ashgabat, Asmara, Astana, Athens, Baghdad, Baku, Bamako, Bandar Seri Begawan, Bangkok, Bangui,
Banjul, Beirut, Bengaluru, Berlin, Bishkek, Bloemfontein, Bogotá, Bern, Brasília, Bratislava,
Bucharest, Budapest, Buenos Aires, Cairo, Canberra, Cape Town, Caracas, Chennai, Coimbatore, Dakar,
Damascus, Dhaka, Dili, Djibouti city, Dodoma, Doha, Dublin, Dushanbe, Freetown, Gaborone, Ghaziabad,
Guwahati, Hanoi, Harare, Havana, Helsinki, Hobart, Hyderabad, Indore, Jaipur, Jakarta, Jerusalem,
Juba, Jurong East, Kabul, Kampala, Kanpur, Kathmandu, Kigali, Kinshasa, Kochi, Kolkata, Kuala Lumpur,
Kuwait City, Lisbon, Lilongwe, Lima, Lobamba, Lomé, London, Luanda, Lucknow, Lusaka, Malabo, Madrid,
Malé, Mexico City, Manama, Moscow, Manila, Maputo, Maseru, Mbabane, Mogadishu, Monrovia, Mumabi,
Muscat, Nagpur, Nairobi, New Delhi, Niamey, Nicosia, Noida, Nouakchott, N’Djamena, Oslo, Ottawa,
Ouagadougou, Panama City, Paris, Patna, Phnom Penh, Porto-Novo, Pretoria, Pune, Rabat, Reykjavík,
Riyadh, Rome, Sana’a, Santiago, Sri Jayawardenepura Kotte, Stockholm, Seoul, Singapore, Surat,
Suva, Taipei City, Tashkent, Tokyo, Tbilisi, Tehran, Thimphu, Tripoli, Tunis, Vientiane, Vilnius,
Visakhapatnam, Warsaw, Washington D.C., Wellington, Windhoek, Yaoundé, Yerevan, Naypyidaw

ASME B16.5 Flanges Price

Omaa Metal Sources is ANSI/ASME B16.5 Flanges Exporters and Suppliers in the US, UK, South Africa, Saudi Arabia, Singapore, UAE, Oman, South Korea, Turkey, Bahrain, Malaysia, Philippines, Thailand, Norway, Indonesia, Iraq, Yemen, Bangladesh, Nigeria, Egypt, Peru, Ghana, Morocco, Etc.

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