The International Organization for Standardization, also referred to as the ISO is an international standard-setting body. The ISO is composed of representatives from various national standards organizations. International Standards Organization (ISO) marks standards as well as guidelines for various businesses and purposes as well as publishes technical reports. For instance, the ISO sets the ISO Flange Pressure Rating for an ISO 7005 Pn16 Flange.

ISO Pipe Flange Standard, also referred to as Large ISO has a sexless design. The ISO Slip On Flange is made from either 304L stainless or aluminium.The design principles of both the ISO as well as the KF seals are identical. Each ISO Kf Vacuum Flange face is counter-bored or grooved in order to receive a metal centring ring with an elastomeric o -ring around its O.D. similar to the KF, the ISO Cf Flange centring ring performs two functions. It both aligns the flanges and holds the O-ring in place.
However, because of the larger diameter, the ISO O-ring is more probable to roll off. Hence, a spring-loaded retainer is used, which holds it externally. Iso 6162 Split Flange are limited by the O-ring’s properties. Therefore, the Iso 6164 Square Flange are limited to applications with temperatures between ~0° C and 120—180° C. The ISO Lf Flange is also limited to performance in pressure from atmosphere to ~10-8 Torr or mbar. ISO Din Flange is universally sized by the nominal I.D. (in, mm) of the largest tube that could be welded to the flange. The standard sizes produced by ISO Flange Manufacturers in India are: 63, 80, 100, 160, 200, 250, 320, 400, 500, and 630.
The ISO Flange F14 offers greater strength when used as a structural element. An ISO 5210 Mounting Flange is a metal threaded ring with several holes bored into it. The ISO 5211 Mounting Flange is used to allow a shutter or lens to be installed on to a lens board. The ISO 7005 Mounting Flange is permanently attached to the front of a lens board with the help of screws.
Iso 27509 Compact Flange is used in applications like onshore, offshore and subsea. This Iso Din Flange offers significant weight and space savings over conventional flanges. Since the ISO Nw40 Flange is a leak-free joint integrity, it is, therefore considered the most effective and environmentally friendly piping joint available today. The double sealing action of the ISO Weld Neck Flange prevents release of hydrocarbon in to the atmosphere, it addresses both health and safety issues and concerns.
Typically weighing between 70 - 82% less as compared to a conventional flange, the ISO 160 Blank Flange is designed using state-of-the-art finite element analysis. The ISO Flange F07 is in full accordance with ASME VIII, Div 2 provisions and with ANSI/ASME B31.3.
| Specifications | ISO Flanges |
|---|---|
| ISO Flange Standards | ANSI/ASME B16.5, B16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, GOST Flanges. |
| ASME B16.5 ISO Flange size range | 1/2" (15 NB) to 48" (1200NB) DN10~DN5000 |
| ISO Flange Standard DIN | 6Bar 10Bar 16Bar 25Bar 40Bar / PN6 PN10 PN16 PN25 PN40, PN64 |
| ISO Flange Standard ANSI | Class 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS |
| ISO Flange Standard UNI | 6Bar 10Bar 16Bar 25Bar 40Bar |
| ISO Flange Standard EN | 6Bar 10Bar 16Bar 25Bar 40Bar |
| ISO Flange Standard ISO | 5K, 10 K, 16 K 20 K, 30 K, 40 K, 63 K |
| Main Types | Forged / Threaded / Screwed / Plate |
| Flange supporting material | Gasket, Ring Joint, Flange Bolts |
| Most common types of ISO Flanges |
|
| 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 |
| ISO Pipe Flanges Test Certificates | EN 10204/3.1B Raw Materials Certificate 100% Radiography Test Report Third Party Inspection Report, etc |
| Production technique |
|
| Special design | As per your drawing AS, ANSI, BS, DIN and ISO ISO Threaded Flange, Socketweld Flange, Slip-On Flange, Blind Flange, Weld Neck Flange |
| Specialized manufacturer of |
|
| Test | Hydrostatic testing machine, Direct-reading Spectrograph,UI trasonic flaw detector, X-ray detector, Magnetic particle detector |
| Equipment | Bending machine, Press machine, electric bevelling machine, Pushing Machine, Sand-blasting machine etc |
| Origin | West Europe /Indian / USA / Japan / Korean |
| ISO Flanges Standard | ANSI DIN, GOST, ISO, UNI, BS, AS2129, ISO, EN, SABS, NFE etc.
|
| Key markets and industries for ISO Flangeo |
|
| Export to | Indonesia, Ireland, Ukraine, Singapore,Saudi Arabia,Canada, Peru, Dubai, Brazil, Iran, Korea, USA, India, Egypt, Thailand, Spain, Oman etc |
| ISO Flanges Application |
|
| Material Test Certificates (MTC) as per EN 10204 3.1 and EN 10204 3.2, Test Certificates certifying NACE MR0103, NACE MR0175 | |
ISO Flanges Flange Standards / Types and Pressure Class :
| ASME/ANSI B 16.36 | Welding Neck Flange, Slip on Flange, Threaded Flange |
| PRESSURE CLASS | 300, 400, 600, 900, 1500, 2500 |
| ASME/ANSI B 16.5 | Welding Neck Flange, Slip on Flange, Blind Flange, High Hub Blind Flange, Socket Weld Flange, Lap Joint Flange, Threaded Flange, Ring Type Joint Flange |
| PRESSURE CLASS | 150, 300, 400, 600, 900, 1500, 2500 |
| ASME/ANSI B 16.47 | Welding Neck Flange, Blind Flange [Series A & B] |
| PRESSURE CLASS | 75, 150, 300, 400, 600, 900 |
| BS 4504 SEC 3.1 | Welding Neck Flange, Hubbed Slip on Flange, Hubbed Threaded Flange, Lapped Pipe End Flange, Plate Flange, Loose Plate Flange, Loose Plate With Weld Neck Flange, Blank Flange |
| PRESSURE CLASS | PN 2.5 TO PN 40 |
| BS 4504[PART 1] | Welding Neck Flange, Hubbed Slip-On Hubbed Threaded, Plate Flange, Loose Plate With Weld On Plate Collar, Blank Flange |
| PRESSURE CLASS | PN 2.5 TO PN 400 |
| BS 1560 BOSS | Welding Neck Flange, Socket Welding Flange, Slip-On Flange, Blind Flange, Screwed Boss Flange, Lapped Flange |
| PRESSURE CLASS | 150, 300, 400, 600, 900, 1500, 2500 |
| BS10 | Welding Neck Flange, Plate Slip-On Flange, Screwed Boss Flange, Slip-On Boss Flange, Blind Flange |
| TABLE | D, E, F, H |
| DIN FLANGES | DIN 2527, 2566, 2573, 2576, 2641,2642, 2655, 2656, 2627, 2628, 2629, 2631, 2632, 2633, 2634, 2635, 2636, 2637,2638, 2673 |
| PRESSURE CLASS | PN 6 TO PN 100 |
15mm (1/2") ISO Flange Weight Chart
Standard |
Class |
Diameter |
Bolt Circle Diameter |
Number of Bolts |
Bolt Size |
Diameter of Bolt Hole |
|---|---|---|---|---|---|---|
AS4087 Flanges |
PN14 Flanges |
95 |
67 |
4 |
M12 |
14 |
AS 2129 Flange |
Table C Flanges |
95 |
67 |
4 |
13 |
14 |
Table D Flanges |
95 |
67 |
4 |
13 |
14 |
|
Table E Flanges |
95 |
67 |
4 |
13 |
14 |
|
Table F Flanges |
95 |
67 |
4 |
13 |
14 |
|
Table H Flanges |
114 |
83 |
4 |
16 |
17 |
|
Table J Flanges |
114 |
83 |
4 |
16 |
17 |
|
ANSI B16.5 Flanges |
ANSI 150 Flanges |
89 |
60 |
4 |
13 |
16 |
ANSI 300 Flanges |
95 |
67 |
4 |
13 |
16 |
|
ANSI 600 Flanges |
95 |
67 |
4 |
13 |
16 |
|
ANSI 900 Flanges |
121 |
83 |
4 |
19 |
22 |
|
ANSI 1500 Flanges |
121 |
83 |
4 |
19 |
22 |
|
ISO 7005 (DIN) Flange |
PN6 Flanges |
80 |
55 |
4 |
M10 |
11 |
PN10 Flanges |
95 |
65 |
4 |
M12 |
14 |
|
PN16 Flanges |
95 |
65 |
4 |
M12 |
14 |
|
PN20 Flanges |
90 |
60.5 |
4 |
M14 |
16 |
|
PN25 Flanges |
95 |
65 |
4 |
M12 |
14 |
|
PN40 Flanges |
95 |
65 |
4 |
M12 |
14 |


ISO 7005 Threaded Reducing Flanges |
ISO 7005 Reducing Flanges |
ISO 7005 Wnrf Flanges |
ASME ISO 7005 Reducing Flanges |
ISO 7005 Split Flanges |
6162 ISO Reducing Flange |
ISO 7005 Turbo Flanges |
ISO 7005 Forged Flanges |
ISO 7005 Vacuum Flanges |
ISO 7005 Reducing Flange |
ISO 7005 Reducing Flanges |
6162 ISO Forged Flange |
ISO 7005 Split Flanges |
ASME ISO 7005 Blind Flanges |
ISO 7005 Slip-On Pipe Flanges |
6162 ISO Blind Flange |
ISO 7005 Square Flanges |
ISO 7005 Ansi Flanges |
Ansi 150 ISO 7005 Flanges |
ISO 7005 JIS BLRF Flanges |
ISO 7005 Blank Flanges |
ISO 7005 Orifice Flanges |
ISO 7005 Bsp Flanges |
ASME ISO 7005 Orifice Flanges |
ISO 7005 Companion Flanges |
6162 ISO Orifice Flanges |
ISO 7005 Class 150 Flanges |
ISO 7005 Duct Flanges |
ISO 7005 Cover Flanges |
ISO 7005 Orifice Flanges |
Custom ISO 7005 Flanges |
ISO 7005 Socket weld Flanges |
Class 600 ISO 7005 Flanges |
ASME ISO 7005 Socket weld Flanges |
ISO 7005 Din Flanges |
6162 ISO Socket weld Flanges |
Large Diameter ISO 7005 Flanges |
ISO 7005 SWRF Flanges |
Table E ISO 7005 Flanges |
ASME B16.5 6162 ISO Socket weld Flanges |
ISO 7005 Floor Flanges |
ISO 7005 Threaded Flanges |
ISO 7005 Forged Flanges |
ASME ISO 7005 Threaded Flanges |
Gaskets For ISO 7005 Flanges |
6162 ISO Threaded Flanges |
ISO 7005 Handrail Flanges |
ISO 7005 Manifold Flanges |
High Pressure ISO 7005 Flanges |
ISO 7005 Threaded Flanges |
ISO 7005 Lap Joint Flanges |
ISO 7005 Threaded Flanges |
ISO 7005 Long Weld Neck Flanges |
ISO 7005 Long weld Neck Flanges |
ISO 7005 Pipe Flanges |
ISO 7005 Raised Face Slip On Flanges |
ISO 7005 Exhaust Flanges |
ASME ISO 7005 Slip On Plate Flanges |
ISO 7005 Header Flanges |
6162 ISO Slip On Flanges |
ISO 7005 Plate Flanges |
ISO 7005 Pipe Flanges |
ISO 7005 Backing Flanges |
ISO 7005 Exhaust Flanges |
ISO 7005 Tube Flanges |
ASME ISO 7005 Header Flanges |
ISO 7005 Metric Flanges |
ASME ISO 7005 Long weld Neck Flanges |
ISO 7005 Muffler Flanges |
6162 ISO Long weld Neck Flanges |
ISO 7005 Pump Flanges |
ISO 7005 Orifice Flanges |
ISO 7005 Pressed Flanges |
ISO 7005 Ring Type Joint Flanges |
ISO 7005 Puddle Flanges |
ASME ISO 7005 Ring Type Joint Flange |
ISO 7005 Pad Flanges |
6162 ISO RTJ Flanges |
ISO 7005 Reducing Flanges |
JIS RTJ Flanges |
ISO 7005 Raised Face Flanges |
ISO 7005 RTJ Flanges |
ISO 7005 Ring Flanges |
BS4504 ISO 7005 RTJ Flanges |
ISO 7005 Stub End Flanges |
ISO 7005 Raised Face Weld Neck Flanges |
ISO 7005 Shower Rod Flanges |
ISO 7005 Sae Flanges |
ISO 7005 Slip On Flanges |
6162 ISO Weld Neck Flange |
ISO 7005 Screwed Flanges |
ISO 7005 Clad Flanges |
ISO 7005 Socket Weld Flanges |
ISO 7005 JIS WNRF Flange |
ISO 7005 Sbc Header Flanges |
ISO 7005 Raised Face Blind Flanges |
Flange Schedule/Class |
Pipe Size - Pipe Flanges |
Flange Connection Type |
Flange Material |
Max. Pressure |
|---|---|---|---|---|
ASME B16.5 Class 150 |
1/2" |
FNPT |
ISO |
150 psi |
ASME B16.5 Class 150 |
1/2" |
Socket Weld |
Forged ISO |
275 psi |
ASME B16.5 Class 150 |
1/2" |
Welded |
ISO |
150 psi |
ASME B16.5 Class 150 |
3/4" |
FNPT |
ISO |
150 psi |
ASME B16.5 Class 150 |
3/4" |
Socket Weld |
Forged ISO |
275 psi |
ASME B16.5 Class 150 |
1-1/4" |
Socket Weld |
Forged ISO |
275 psi |
ASME B16.5 Class 150 |
1-1/2" |
Socket Weld |
Forged ISO |
275 psi |
ASME B16.5 Class 150 |
2" |
FNPT |
ISO |
150 psi |
ASME B16.5 Class 150 |
2" |
Socket Weld |
Forged ISO |
275 psi |
ASME B16.5 Class 150 |
2-1/2" |
Socket Weld |
Forged ISO |
275 psi |
ASME B16.5 Class 150 |
3" |
Socket Weld |
Forged ISO |
275 psi |
ASME B16.5 Class 150 |
4" |
FNPT |
ISO |
150 psi |
ASME B16.5 Class 150 |
4" |
Socket Weld |
Forged ISO |
275 psi |
ASME B16.5 Class 300 |
1/2" |
Slip On |
Forged ISO |
720 psi |
ASME B16.5 Class 300 |
1/2" |
Slip On |
Forged ISO |
720 psi |
ASME B16.5 Class 300 |
1" |
Slip On |
Forged ISO |
720 psi |
ASME B16.5 Class 300 |
1" |
Slip On |
Forged ISO |
720 psi |
ASME B16.5 Class 300 |
1-1/4" |
FNPT |
Forged ISO |
720 psi |
ASME B16.5 Class 300 |
1-1/4" |
Slip On |
Forged ISO |
720 psi |
ASME B16.5 Class 300 |
1-1/2" |
Slip On |
Forged ISO |
720 psi |
ASME B16.5 Class 300 |
1-1/2" |
Slip On |
Forged ISO |
720 psi |
ASME B16.5 Class 300 |
2" |
Slip On |
Forged ISO |
720 psi |
ASME B16.5 Class 300 |
2" |
Slip On |
Forged ISO |
720 psi |
ASME B16.5 Class 300 |
2-1/2" |
Slip On |
Forged ISO |
720 psi |
ASME B16.5 Class 300 |
2-1/2" |
Slip On |
Forged ISO |
720 psi |
ASME B16.5 Class 300 |
3" |
Slip On |
Forged ISO |
720 psi |
ASME B16.5 Class 300 |
3" |
Slip On |
Forged ISO |
720 psi |
ASME B16.5 Class 300 |
4" |
Slip On |
Forged ISO |
720 psi |
ASME B16.5 Class 300 |
4" |
Slip On |
Forged ISO |
720 psi |
ISO 6164 PN16 Flange |
|
ISO 6164 PN16 Slip-On Flange |
ISO 6164 PN16 Threaded Flange |
ISO 6164 PN16 Weld Neck Flange |
ISO 6164 PN16 Socket Weld Flange |
ISO 6164 PN16 Blind Flange |
ISO 6164 PN16 Reducing Flange |
ISO 6164 PN16 Lap Joint Flange |
ISO 6164 PN16 Plate Flange |
ISO 6164 PN16 Orifice Flange |
ISO 6164 PN16 Forged Flange |
ISO 6164 PN16 Ring Type Joint Flange |
ISO 6164 PN16 Square Flange |