ASME B16.5 Flanges

ANSI B16.5 Slip on Flange Supplier in India

ASME B16.5 reducing flanges are a types of flanges that belong to the ASME B16.5 specification. This standard specification covers flanged fittings and steel pipe flanges of NPS ½ to NPS24 sizes. There are different pressure classes to these flanges ranging from 150 to 2500. The ASME B16 5 blind flange 1500 lbs is one of the high pressure flange range. The flanges vary in shape, size, dimensions and in material grades. The ANSI B16.5 slip on flange is a flared out in order to allow the pipes to slip through it and make the connection at the desired precise location. For this purpose, the seamless pipes are often used with the slip on flanges.

ASME B16.5 Flanges

ASME B16.5 Flanges

ASME B16 5 Class 300 Flanges

ASME B16 5 Class 300 Flanges

The ASME B16.5 threaded flange has threads on it. Usually, the threaded flanges have female threads to fit with the pipe ends with male threads. The threaded flanges can also be welded after connection for better tightness. There are different face types to flanges such as raised face, flat face and ring type joint. The Lap joint flange asme b16.5 has a lap that can be joint to the pipes and then be welded. The different shapes and types of flanges are used in different application types. The ANSI B16.5 stainless steel flange is made in different grades of materials as well. The 304 austenitic stainless steel is the most used grade for flanges because it is low cost, strong and long lasting.


As far as corrosion resistance is considered, the ANSI B16.5 class 150 welding neck flanges are made from the 316 austenitic stainless steel next to the 304 grade. The sizes of the flanges range based on the standards they belong to. The ASME B16.5 class 300 flange is a medium range pressure capable flange. The applications of the flanges are in the oil and gas, water lines, petroleum, petrochemical and in other general corrosive services, domestic pipelines and industrial pipelines as well.

Specification of ANSI/ ASME B16.5 Flange


ASME B16 5 Flange Size Chart 1/2″ (15 NB) to 48″ (1200NB) DN10~DN5000
ANSI B16.5 Flange Standards ANSI/ASME B16.5, B16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, ANSI Flange, ASME Flange, BS Flange, DIN Flange, EN Flange, GOST Flange, ASME/ANSI B16.5/16.36/16.47A/16.47B, MSS S44, ISO70051, JISB2220, BS1560-3.1, API7S-15,
API7S-43, API605, EN1092
ANSI B16.5 Flange Pressure Calculation in DIN 6Bar 10Bar 16Bar 25Bar 40Bar / PN6 PN10 PN16 PN25 PN40, PN64
JIS 5K, 10 K, 16 K 20 K, 30 K, 40 K, 63 K
UNI 6Bar 10Bar 16Bar 25Bar 40Bar
ANSI B16.5 Flange Pressure Rating ANSI Class 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS
EN 6Bar 10Bar 16Bar 25Bar 40Bar
Coating Oil Black Paint, Anti-rust Paint, Zinc Plated, Yellow Transparent, Cold and Hot Dip Galvanized
Most common types of ANSI B16.5 Forged / Threaded / Screwed / Plate
Test Certificates EN 10204/3.1B
Raw Materials Certificate
100% Radiography Test Report
Third Party Inspection Report, etc
Production technique
  • Forged, Heat treated and machined
Equipment Press machine, Bending machine, Pushing Machine, electric bevelling machine, Sand-blasting machine etc
Origin Indian / West Europe / Japan / USA / Korean
Manufacturer of ANSI DIN, GOST, JIS, UNI, BS, AS2129, AWWA, EN, SABS, NFE etc.
ANSI B16.5: -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
Connect Type/ Flange Face Type Raised Face (RF), Ring Type Joint (RTJ), Flat Face (FF), Large Male-Female (LMF), Lap-Joint Face (LJF), Small Male-Female (SMF), Small Tongue, Large Tongue & Groove, , 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

Test Direct-reading Spectrograph, Hydrostatic testing machine, X-ray detector, UI trasonic flaw detector, Magnetic particle detector
ANSI B16.5 Flange Uses & application
  • Bitumen upgraders.
  • Heavy oil refineries.
  • Nuclear power (mostly seamless).
  • Petrochemicals and acids.

Material of ANSI B16.5 Flange


Carbon Steel ASME B16.5 Flange ASTM/ASME A/SA105 A/SA105N & A/SA216-WCB, DIN 1.0402, DIN 1.0460, DIN 1.0619, Die Steel, ASTM A105 / ASME SA105, A105N, ASTM A350 LF2 / ASME SA350, High Yield CS ASTM A694 / A694 (F52 F56 F60 F65 F70 F80)
Stainless Steel ASME B16.5 Flange ASTM/ASME A/SA182 F304, F304L, F316, F316L, ASTM/ASME A/SA351 CF8, CF3, CF8M, CF3M, DIN 1.4301, DIN 1.4306, DIN 1.4401, DIN 1.4404, DIN 1.4308, DIN 1.4408, DIN 1.4306, DIN 1.4409
Alloy Steel ASME B16.5 Flange ASTM A182 / ASME SA182 F5, F9, F11, F12, F22, F91
Titanium ANSI B16.5 Flange 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 ASME B16.5 Flange T1, T2, C10100, C10200, C10300, C10400, C10500, C10700, C10800, C10910,C10920, TP1, TP2, C10930, C11000, C11300, C11400, C11500, C11600, C12000,C12200, C12300, 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
Copper Nickel ASME B16.5 Flange ASTM / ASME SB 61 / 62 / 151 / 152, Copper Nickel 90/10 (C70600 ), Cupro Nickel 70/30 (C71500), UNS C71640
Brass ASME B16.5 Flange 3602 / 2604 / H59 / H62 / etc.
Inconel ANSI B16.5 Flange ASTM B564 / ASME SB564, Inconel 600, 601, 625, 718, 783, 690, x750 ASME B16.5
Hastelloy ASME B16.5 Flange ASTM B564 / ASME SB564, Hastelloy C276 (UNS N10276), C22 (UNS N06022), C4, C2000, B2, B3, X Flange
Monel ASME B16.5 Flange ASTM B564 / ASME SB564, Monel 400 (UNS No. N04400), Monel 500 (UNS No. N05500)
Alloy 20 ASME B16.5 Flange ASTM B462 / ASME SB462, Carpenter® 20 Alloy, Alloy 20Cb-3
Aluminium ASME B16.5 Flange 5052 /6061/ 6063 / 2017 / 7075 / etc.
Nickel ANSI B16.5 Flange ASTM B564 / ASME SB564, Nickel 200, Nickel 201, Nickel 205, Nickel 205LC
Duplex ASME B16.5 Flange S31803 / S32205 A182 Gr F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F61
Super Duplex ASME B16.5 Flange S32750 / S32760 A182 Gr F51 / F52 / F53 / F54 / F55 / F57 / F59 / F60 / F61
Incoloy ASME B16.5 Flange ASTM B564 / ASME SB564, Incoloy 800, 800H, 800HT (UNS N08800), 825 (UNS N08825), 925 Flange
254 Smo ANSI B16.5 Flange ASTM A182 / ASME SA182, SMO 254/6Mo, UNS S31254, DIN 1.4547
Nimonic ASME B16.5 Flange Nimonic 75, Nimonic 80A, Nimonic 90
Other ANSI B16.5 Flange material Tin bronze, Alumunum bronze, Lead bronze

Dimensions of ASME B16.5 Class 150 Flange


ASME B16.5 Class 150 Flange
Nominal Size Outside Diameter (OD) Min. Thickness (T) RF Dia. (R) No. of Bolt Holes Diameter of Holes Bolt Circle (BC) SO Bore ID (SB) WN Bore ID (WB) Dia. Hub Base (HB) Dia. of Hub Top (HT) SO LTH (SL) WN 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

Dimensions in mm of ANSI B16.5 Class 300 Flange


Nominal Size Outside Diameter (OD) Min. Thickness (T) RF Dia. (R) No. of Bolt Holes Diameter of Holes Bolt Circle (BC) SO Bore ID (SB) WN Bore ID (WB) Dia. Hub Base (HB) Dia. Hub Top (HT) SO LTH (SL) WN 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

ANSI B16.5 Class 400 Flange Dimensions


Nominal Size Outside Diameter (OD) Min. Thickness (T) RF Dia. (R) No. of Bolt Holes Diameter of Holes Bolt Circle (BC) SO Bore ID (SB) Dia. Hub Base (HB) Dia. Hub Top (HT) SO LTH (SL) WN LTH (WL) * WN Bore ID (WB)
12 3.75 0.56 1.38 4 0.63 2.62 0.88 1.5 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 10.00 1.38 6.19 8 1.00 7.88 4.57 5.75 4.50 2.00 3.50 *
5 11.00 1.50 7.31 8 1.00 9.25 5.66 7.00 5.56 2.12 4.00 *
6 12.50 1.62 8.50 12 1.00 10.62 6.72 8.12 6.63 2.25 4.06 *
8 15.00 1.88 10.62 12 1.12 13.00 8.72 10.25 8.63 2.69 4.62 *
10 17.50 2.12 12.75 16 1.25 15.25 10.88 12.62 10.75 2.88 4.88 *
12 20.50 2.25 15.00 16 1.38 17.75 12.88 14.75 12.75 3.12 5.38 *
14 23.00 2.38 16.25 20 1.38 20.25 14.14 16.75 14.00 3.31 5.88 *
16 25.50 2.50 18.50 20 1.50 22.50 16.16 19.00 16.00 3.69 6.00 *
18 28.00 2.62 21.00 24 1.50 24.75 18.18 21.00 18.00 3.88 6.50 *
20 30.50 2.75 23.12 24 1.62 27.00 20.20 23.12 20.00 4.00 6.62 *
22 33.00 2.88 25.25 24 1.75 29.25 22.22 25.25 22.00 4.25 6.75 *
24 36.00 3.00 27.25 24 1.88 32.00 24.25 27.62 24.00 4.50 6.88 *

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 Bore ID (SB) Dia. Hub Base (HB) Dia. Hub Top (HT) SO LTH (SL) WN LTH (WL) * WN 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 *

Dimensions Table of ANSI B16.5 Class 900 Flange


Nominal Size Outside Diameter (OD) Min. Thickness (T) RF Dia. (R) No. of Bolt Holes Diameter of Holes Bolt Circle (BC) SO Bore ID (SB) * WN Bore ID (WB) Dia. Hub Base (HB) Dia. Hub Top (HT) SO LTH (SL) WN 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

ANSI 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 Bore ID (SB) Dia. Hub Base (HB) Dia. Hub Top (HT) SO LTH (SL) WN 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 *

Dimensions Chart of ASME B16.5 Class 2500 Flange


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 LTH (SL) WN 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 *

ANSI B16.5 Flange Pressure Rating


Temperature
FLANGE TABLE -10°C to 200°C

250°C

300°C

350°C

400°C

425°C

450°C

475°C

6

6

5.5

5

10

10

9

8

7

6

16

16

15

13

11

9

25

25

24

21

17

14

12

9

6

40

40

38

33

28

23

20

15

10

64

64

61

53

44

36

32

24

16

100

100

95

83

70

57

50

37

25

160

160

152

132

112

92

80

60

40


Weight Chart Of ASME B16.5 Flange


NPS
(Inches)
DN
(mm)
FLANGE OD
A MM
FLANGE THICKNESS D
MM
SLIP ON FLANGE WEIGHT (KGS) WELD NECK FLANGE WEIGHT (KGS) BLIND FLANGE WEIGHT (KGS)
1/ 2 15 88.9 11.2 0.4 0.5 0.4
3/ 4 20 98.6 12.7 0.6 0.7 0.6
1 25 108 14.2 0.8 1 0.9
1 1/ 4 32 117.3 15.7 1 1.3 1.2
1 1/ 2 40 127 17.5 1.3 1.7 1.5
2 50 152.4 19.1 2.1 2.6 2.4
2 1/ 2 65 177.8 22.4 3.3 4.1 3.9
3 80 190.5 23.9 3.9 4.9 4.9
3 1/ 2 90 215.9 23.9 4.8 6.1 6.2
4 100 228.6 23.9 5.3 6.8 7.0
5 125 254 23.9 6.1 8.6 8.6
6 150 279.4 25.4 7.5 10.6 11.3
8 200 342.9 28.4 12.1 17.6 19.6
10 250 406.4 30.2 16.5 24 28.6
12 300 482.6 31.8 26.2 36.5 43.2
14 350 533.4 35.1 34.6 48.4 58.1
16 400 596.9 36.6 44.8 60.6 76.1
18 450 635 39.6 48.9 68.3 93.7
20 500 698.5 42.9 61.9 84.5 122.0
24 600 812.8 47.8 86.9 115 185.0