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ANSI/ASME/ASA B16.5 Standard Flange

Specialized ASME B16.5 Flanges Manufacturer, ANSI B16.5 Flanges, ASA B16.5 Flanges

Marcel Piping Projects Supply PVT LTD is well-known manufacturers of ASME B16.5 Flanges in India. ASME B16.5 are components that are used to fit together two pipes or a pipe with other components in a system. They could either be connected by bolt and nut or by welding together. ANSI B16.5 Flanges belong to the standard B16.5. industrial flange have a category that can hold the classes 150 through 2500 and their diameter ranges from ¼ inches to 24 inches. ASA B16.5 Class 600 Flanges belong in the same category but with a higher maximum pressure capacity. industrial pipe flange is a specification of forged flanges. ASME B16.5 pipe flange are preferred by our customers for their durability, corrosion resistance and excellent performance. Their applications and use cases vary. Class 600 Flanges have higher maximum pressure so that they can be applied in heavy duty systems.

ANSI B16.5 Class 150 Flange is a pressure class that can handle a maximum pressure of 285psi. Flange sizes from 26 inches and above are governed by ASME B16.5 standards. Class 150 Flanges are mutually the same except is heavier and costly with less bolt holes. 150 LB Flanges are commonly used in applications where the piping system is less than 14 inches in diameter.

Pipe Flanges and Flange Fittings produced under standard ASME B16.5 – 1996 are used predominantly in the oil and gas industry. The main function of using an ANSI B16.5 Flange is because it is a component that assists the worker during cleaning, inspection or modification across a piping system. The ASME B16.5 encompasses pressure-temperature ratings, Industrial Pipe Flange Dimensions, tolerances, marking, materials, testing, and methods of designating openings for several types of pipe flanges and flanged fittings.

ASME B16.5 Flanges Manufacturer
ASME B16.5 Flanges Manufacturer in Mumbai, India
ANSI B16.5 Flanges Supplier in Mumbai, India

We Recognize as a Trusted Manufacturer and Stockist of ASME B16.5 Flange, ASME B16.5 Flange, ASME B16 5 Slip On Flange, ANSI B16.5 Class 150 Flanges, ASME B16.5 Class 300 Flanges at Best Prices.

We are Leading Exporter and Supplier of ASME B16.5 and Flanges in Pressure-Temperature Rating Class 150, Class 300, Class 400, Class 600, Class 900, Class 1500, Class 2500 in USA, UK, Qatar, Mexico, Nigeria, Saudi Arabia, Kuwait, Iran, Kazakhstan, Bahrain, Vietnam, Indonesia, Norway, Ghana, Colombia, Azerbaijan, Libya, India.

ANSI/ASME B16.5 Flanges Standard Specifications
B16.5 Specification Chart

Flange Size Range Normal Pipe Size 1/2 to NPS 24″
Flange Class / Pressure Rating Class 150, Class 300, Class 400, Class 600, Class 900, Class 1500, Class 2500
High Temperature Above 200°C (400°F) For Class 150 Or Above 400°C (750°F)
Low Temperature Above -29 Degree C (−20°F)
Flange Face Types Flat Face Flange (FF), Raised Face Flange (RF), Ring Joint Flange (RTJ), Lap Joint Flange, Male and Female Flange (M&F), Large and Small Tongue-and-Groove Flange (T&G)
B16.5 Standard Cover dimensions, tolerances, weight, temperature ratings & pressure ratings, marking, materials, testing
Custom Design As per your drawing
Material Test Certificates (MTC) As per EN 10204 3.2 and EN 10204 3.1, Test Certificates certifying NACE MR0175, NACE MR0103
Test Certificates 100% Radiography Test Report, EN 10204/3.1B, Raw Materials Certificate, Third Party Inspection Report, etc
Tests Hydrostatic testing machine, Direct-reading Spectrograph, UI trasonic flaw detector, X-ray detector, Magnetic particle detector
Equipment / Machines Press machine, Pushing Machine, Bending machine, Sand-blasting machine, electric bevelling machine, etc.
Coating Anti-rust Paint, Oil Black Paint, Yellow Transparent, Zinc Plated, Cold and Hot Dip Galvanized
Origin Indian / USA / Japan / West Europe / Korean

ANSI/ASME B16.5 Flanges Material Grades
B16.5 Flange Materials

Stainless Steel B16.5 Flange ASTM/ASME A/SA182:- F304, F304L, F316, F316L, ASTM/ASME A/SA351:- CF3, CF3M, CF8, CF8M, DIN 1.4306, DIN 1.4301, DIN 1.4404, DIN 1.4401, DIN 1.4408, DIN 1.4308, DIN 1.4306, DIN 1.4409
Duplex B16.5 Flanges S31803 / S32205 A182:- Gr F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F61
Super Duplex B16.5 Flanges S32750 / S32760 A182:- Gr F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F61
Copper Nickel B16.5 Flanges ASTM / ASME SB 61 / 62 / 151 / 152, Copper Nickel 90/10 (C70600 ), Cupro Nickel 70/30 (C71500), UNS C71640
Titanium B16.5 Flanges ASTM B381 / ASME SB381:- Titanium Gr. 1, Titanium Gr. 2, Titanium Gr. 4, Titanium Gr. 5, Titanium Gr. 7
ASTM  R50250/GR.1 | R50400/GR.2 | R50550/GR.3 | R50700/GR.4 | GR.6 |R52400/GR.7 | R53400/GR.12 | R56320/GR.9 | R56400/GR.5
Copper B16.5 Flanges TP1, TP2, C10930, C11000, C11300, C11400, C11500, C11600, C12000, C12200, C12300, T1, T2, C10100, C10200, C10300, C10400, C10500, C10700, C10800, C10910, C10920, TU1, TU2, C12500, C14200, C14420, C14500, C14510, C14520, C14530, C17200, C19200, C21000, C23000, C26000, C27000, C27400, C28000, C33000, C33200, C37000, C44300, C44400, C44500, C60800, C63020, C68700, C70400, C70600, C70620, C71000, C71500, C71520, C71640, etc
Incoloy B16.5 Flanges ASTM B564 / ASME SB564:- Incoloy 800, 800H, 800HT (UNS N08800), 825 (UNS N08825), 925
Inconel B16.5 Flanges ASTM B564 / ASME SB564:- Inconel 600, 601, 625, 718, 783, 690, x750
Nickel B16.5 Flanges ASTM B564 / ASME SB564:- Nickel 200, Nickel 201, Nickel 205, Nickel 205LC
Hastelloy B16.5 Flanges ASTM B564 / ASME SB564:- Hastelloy C276 (UNS N10276), C22 (UNS N06022), C4, C2000, B2, B3, X
Monel B16.5 Flanges ASTM B564 / ASME SB564:- Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500)
Carbon Steel B16.5 Flanges ASTM/ASME A/SA105 A/SA105N and A/SA216-WCB, DIN 1.0460, DIN 1.0402, DIN 1.0619, Die Steel, ASTM A105 / ASME SA105, A105N, ASTM A350 LF2 / ASME SA350, CS High Yield ASTM A694 / A694 (F52, F56, F60, F65, F70, F80)
Alloy Steel B16.5 Flanges ASTM A182 / ASME SA182:- F5, F9, F11, F12, F22, F91
B16.5 Alloy 20 Flanges ASTM B462 / ASME SB462:- Carpenter® 20 Alloy, Alloy 20Cb-3
B16.5 SMO 254 Flanges ASTM A182 / ASME SA182:- SMO 254/6Mo, UNS S31254, DIN 1.4547
Aluminium B16.5 Flanges 5052 /6061/ 6063 / 2017 / 7075 / etc.
Brass B16.5 Flanges 3602 / 2604 / H59 / H62 / etc.
Other B16.5 Flanges material Tin bronze, Alumunum bronze, Lead bronze, Nimonic 75, Nimonic 80A, Nimonic 90, AISI 4140, AISI 4130, Mild Steel, Al6XN Flanges

Steel Pipe Flange Standards
Flange Standards and Dimensions

ASME B16.5 Flange Dimensions
B16.5 Flange Technical Drawings

ASME B16.5 Flange Weight Chart
½” – 24” Forged Flanges

CLASS Nominal Pipe Size Slip On Threaded Socket Weld Lap Joint Blind Weld Neck
150 lb ½ 1 1 2 1 2 2
¾ 2 2 2 2 2 2
1 2 2 2 2 2 3
3 3 3 3 3 3
3 3 3 3 4 4
2 5 5 5 5 5 6
8 8 8 8 7 10
3 9 9 9 9 9 11.5
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 Nominal Pipe Size Slip On Threaded Socket Weld Lap Joint Blind Weld Neck
300 lb ½ 2 2 3 2 2 2
¾ 3 3 3 3 3 3
1 3 3 3 3 4 4
4.5 4.5 4 4.5 6 5
6.5 6.5 6 6.5 7 7
2 7 7 7 7 8 9
10 10 10 10 12 12
3 13 14 13 14.5 16 18
17 17 17 17 21 20
4 23.5 24 22 24 28 26.5
5 29 31 28 28 37 36
6 39 39 39 39 50 45
8 58 58 58 58 81 69
10 81 81 81 91 124 100
12 115 115 115 140 185 142
14 165 165 165 190 250 206
16 210 220 190 234 315 250
18 253 280 250 305 414 320
20 315 325 315 375 515 400
22 370 370 370 435 640 465
24 490 490 475 550 800 580
CLASS Nominal Pipe Size Slip On Threaded Socket Weld Lap Joint Blind Weld Neck
400 lb ½ 2 2 2 2 2 3
¾ 3 3 3 3 3 3.5
1 3.5 3.5 3.5 3.5 4 4
4.5 4.5 4.5 4.5 6 4.5
6.5 6.5 6.5 6.5 8 8
2 8 8 8 8 10 10
12 12 12 11 15 14
3 15 15 15 14 20 18
21 21 21 20 29 26
4 26 26 26 25 33 35
5 31 31 31 29 44 43
6 44 44 44 42 61 57
8 67 67 67 64 100 89
10 91 91 91 110 155 125
12 130 130 130 152 226 175
14 191 191 191 210 310 233
16 253 253 253 280 398 295
18 310 310 310 345 502 360
20 378 378 378 420 621 445
22 405 405 405 455 720 505
24 539 539 539 615 936 640
CLASS Nominal Pipe Size Slip On Threaded Socket Weld Lap Joint Blind Weld Neck
600 lb ½ 2 2 2 2 3 3
¾ 3 3 3 3 4 4
1 4 4 4 4 4 4
5 5 5 5 6 6
7 7 7 7 8 8
2 9 9 9 9 10 12
13 13 13 12 15 18
3 16 16 16 15 20 23
21 21 21 20 29 26
4 37 37 37 36 41 42
5 63 63 63 63 68 68
6 80 80 80 78 86 81
8 115 115 115 112 140 120
10 177 177 177 195 231 190
12 215 215 215 240 295 226
14 259 259 259 290 378 347
16 366 366 366 400 527 481
18 476 476 476 469 665 555
20 612 612 612 604 855 690
22 590 590 590 670 1000 720
24 876 876 876 866 1250 977
CLASS Nominal Pipe Size Slip On Threaded Socket Weld Lap Joint Blind Weld Neck
900 lb ½ 6 6 6 6 4 7
¾ 6 6 6 6 6 7
1 7.5 7.5 7.5 7.5 9 8.5
10 10 10 10 10 10
14 14 14 14 14 14
2 22 22 22 21 25 24
31 31 31 25 32 31
3 36 36 36 29 35 36
4 53 53 53 51 54 53
5 83 83 83 81 87 86
6 110 110 110 105 115 110
8 172 172 172 190 200 187
10 245 245 245 277 290 268
12 326 326 326 371 415 372
14 400 400 400 415 520 562
16 459 459 459 488 619 685
18 647 647 647 670 880 924
20 792 792 792 868 1107 1164
24 1480 1480 1480 1659 2099 2107
CLASS Nominal Pipe Size Slip On Threaded Socket Weld Lap Joint Blind Weld Neck
1500 lb ½ 6 6 6 6 4 7
¾ 6 6 6 6 6 7
1 8 8 8 8 9 9
10 10 10 10 10 10
14 14 14 14 14 14
2 25 25 25 25 25 25
36 36 36 35 35 36
3 48 48 48 47 48 48
4 73 73 73 75 73 73
5 132 132 132 140 140 132
6 165 165 165 170 160 165
8 260 260 260 286 302 275
10 436 436 436 485 510 455
12 667 667 667 749 775 690
14 940 940 940 890 975 940
16 1250 1250 1250 1250 1300 1250
18 1625 1625 1625 1475 1750 1625
20 2050 2050 2050 1775 2225 2050
24 2825 2825 2825 2825 3625 3325
CLASS Nominal Pipe Size Slip On Threaded Socket Weld Lap Joint Blind Weld Neck
2500 lb ½ …. 7 …. 7 7 8
¾ …. 9 …. 8 10 9
1 …. 12 …. 12 12 13
…. 18 …. 17 18 20
…. 25 …. 24 25 28
2 …. 38 …. 37 39 42
…. 55 …. 53 56 52
3 …. 83 …. 80 86 94
4 …. 127 …. 122 133 146
5 …. 210 …. 204 223 244
6 …. 323 …. 314 345 378
8 …. 485 …. 471 533 576
10 …. 925 …. 897 1025 1068
12 …. 1300 …. 1262 1464 1608

ASME B16.5 Flange Tolerances
B16.5 Dimensional Tolerances

DIMENSIONAL TOLERANCES ■ ASME B16.5
WELDING NECK FLANGES
0 Outside Diameter When 0 is 24″ or less ±0.06″ ±1.6 mm
When O is over 24” ±0.12″ ±3.2 mm
R Diameter of Contact Face 0.06” (1.6 mm) raised face ±0.03″ ±0.8 mm
0.25″ (6.4 mm) raised face ±0.02″ ±0.5 mm
A Diameter of Hub at Point of Welding NPS 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
B Inside Diameter NPS 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
X Diameter of Hub at Base When Hub Base is 24″ or less ±0.06″ ±1.6 mm
When Hub Base is over 24″ ±0.12″ ±3.2 mm
c Thickness NPS 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
Drilling Bolt Circle Diameter ±0.06″ ±1.6 mm
Bolt Hole Spacing ±0.03″ ±0.8 mm
Eccentricity of Bolt Circle and Facing with Respect to Bore NPS 21/2 and smaller ±0.03″ ±0.8 mm
NPS 3 and larger ±0.06″ ±1.6 mm
Length Through Hub NPS 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
O Outside Diameter When O is 24″ or less
When O is over 24″
±0.06″ ±0.12″ ±1.6 mm
±3.2 mm
R Diameter of Contact Face 0.06″ (1.6 mm) raised face 0.25″ (6.4 mm) raised face ±0.03″ ±0.02″ ±0.8 mm
±0.5 mm
B Inside 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
Q Counterbore, Threaded Flanges 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
X Diameter of Hub at Base NPS 12 and smaller
NPS 14 and larger
+0.09″, -0.06″ ±0.12″ +2.4 mm, -1.6
±3.2 mm
c Thickness NPS 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
Drilling Bolt Circle Diameter Bolt Hole Spacing ±0.06″ ±0.03″ ±1.6 mm
±0.8 mm
Eccentricity of Bolt Circle and Facing with Respect to Bore NPS 2V2 and smaller
NPS 3 and larger
±0.03″ ±0.06″ ±0.8 mm
±1.6 mm
Overall Length Through Hub NPS 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 Flange Pressure and Temperature Ratings
ANSI B16.5 Flanges

Pressure and Temperature Ratings – Group 1.2

Working Pressure (bar) 
Temperature (°C) Class
150 300 400 600 900 1500 2500
-29 – 38 19.8 51.7 68.9 103.4 155 259 431
50 19.5 51.7 68.9 103.4 155 259 431
100 17.7 51.5 68.7 103.0 155 258 429
150 15.8 50.2 66.8 100.3 151 251 418
200 13.8 48.6 64.8 97.2 146 243 405
250 12.1 46.3 61.7 92.7 139 232 386
300 10.2 42.9 57.0 85.7 129 214 357
325 9.3 41.4 55.0 82.6 124 207 344
350 8.4 40.0 53.4 80.0 120 200 334
375 7.4 37.8 50.4 75.7 114 189 315
400 6.5 34.7 46.3 69.4 104 174 290
425 5.5 28.8 38.4 57.5 86.3 144 240
450 4.6 23.0 30.7 46.0 69.0 115 192
475 3.7 17.1 22.8 34.2 51.3 85.4 142
500 2.8 11.6 15.4 23.2 34.7 57.9 96.5
538 1.4 5.9 7.9 11.8 17.7 29.5 49.2

Pressure and Temperature Ratings – Group 1.1

Working Pressure (bar) 
Temperature (°C) Class
150 300 400 600 900 1500 2500
-29 – 38 19.6 51.1 68.1 102.1 153.2 255.3 425.5
50 19.2 50.1 66.8 100.2 150.4 250.6 417.7
100 17.7 46.6 62.1 93.2 139.8 233.0 388.3
150 15.8 45.1 60.1 90.2 135.2 225.4 375.6
200 13.8 43.8 58.4 87.6 131.4 219.0 365.0
250 12.1 41.9 55.9 83.9 125.8 209.7 349.5
300 10.2 39.8 53.1 79.6 119.5 199.1 331.8
325 9.3 38.7 51.6 77.4 116.1 193.6 322.6
350 8.4 37.6 50.1 75.1 112.7 187.8 313.0
375 7.4 36.4 48.5 72.7 109.1 181.8 303.1
400 6.5 34.7 46.3 69.4 104.2 173.6 289.3
425 5.5 28.8 38.4 57.5 86.3 143.8 239.7
450 4.6 23.0 30.7 46.0 69.0 115.0 191.7
475 3.7 17.4 23.2 34.9 52.3 87.2 145.3
500 2.8 11.8 15.7 23.5 35.3 58.8 97.9
538 1.4 5.9 7.9 11.8 17.7 29.5 49.2

ANSI/ASME B16.5 Flange Types
ANSI B16.5 Flanges Price in India

Weld Neck Flange
Long Weld Neck Flange
Slip On Flange
Spectacle Blind Flanges
Socket Weld Flanges
Blind Flanges / Dummy Flange
Screwed / Threaded Flanges
Orifice Flanges
Lap Joint Flanges
ANSI B16.5 Square Flanges
Ring Type Joint Flanges
Tongue and Groove Flange
Expander Flanges
Reducing Flanges
Male & Female Flanges
Weldolet Flange
Nipolet Flange
Backing Ring Flanges
Ring Spacer Flanges
Paddle Blind Flanges
Plate Flange
High Hub Blind Flange
Custom Flanges
Swivel Ring Flange

Note: ANSI B16.5 Flanges Prices are depended on Material Grades, Dimensions, Sizes, Type of Flange, and Order Quantity, etc. The prices mentioned on the website are for reference purposes only. To get market leading prices for ANSI B16.5 Flanges contact us now.

ASME B16.5 Flange Industries and Applications
ANSI B16.5 Flange Applications

  • Pumps, Valves, and vessels in manufacturing and food processing.
  • Pipe connections in industrial waterworks.
  • Heat exchangers and heating systems of all sizes.
  • Mining support.
  • Nuclear power systems.
  • Plumbing and mechanical systems.
  • Assemblies in the oil, gas, and petrochemical industries.
  • Fire protection systems.

ANSI B16.5 Flanges Supply and Export Network
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Jeddah
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