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ISO Flanges | ISO 7005-1 | PN Rated

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ISO flanges are flanges made to International Organization for Standardization specifications, chiefly ISO 7005, the globally recognized framework for metric steel flanges used with piping, valves, and equipment. The standard locks in dimensional compatibility, pressure-temperature ratings, and material requirements, so components fit together cleanly on international projects. ISO flanges come in several types, including weld neck, slip-on, blind, threaded, and socket weld, with PN pressure designations close to EN and DIN, running from PN 6 up to PN 420 depending on the part of the standard. Nominal diameters span DN 10 to DN 4000, which covers small-bore utility lines and large transmission pipelines alike. PM Industries manufactures, supplies, and stocks these flanges in popular PN ratings and materials.

The ISO system is built around a unified design, so parts from different manufacturers interchange without fuss. We supply ISO flanges in carbon steel, stainless steel (austenitic and duplex), and alloy steels, picked to match temperature, pressure, and corrosion conditions. Standardized bolt patterns, facing finishes (Raised Face, Flat Face, RTJ), and tight tolerances are what give these flanges reliable sealing. They weld well, carry mechanical load, and last across long service in oil and gas, chemical processing, power generation, water distribution, pharmaceuticals, and marine work.

Sticking to ISO simplifies global supply chains and keeps projects moving, since it cuts the risk of a mismatch between parts from different suppliers. ISO-compliant flanges go through rigorous testing for material composition, mechanical properties, and pressure integrity. In demanding service they hold up against thermal cycling, vibration, and aggressive media, as long as the grade is chosen with the conditions in mind.

PM Industries holds a wide range of ISO standard flanges in stock, each one shipped with certification and full traceability. Whether your project follows European, Asian, or mixed international standards, ISO flanges give you a neutral, widely accepted option that meets engineering best practice. That versatility makes them a sound pick for contractors and engineers on cross-border and multinational installations. From standard utility lines to critical process service, tell us your type, size, PN class, face, and material, and we will quote it.

Specification ISO Flanges

StandardsANSI/ASME B16.5, B16.48, ANSI Flanges, GOST Flanges, DIN Flanges, EN-1092, B16.47 Series A & B, ASME Flanges, EN Flanges, AWWA Flanges, BS Flanges.
JIS Standard 5K, 10 K, 16 K 20 K, 30 K, 40 K, 63 K
DIN FLANGESDIN 2527, 2627, 2631, 2656, 2576, 2673, 2629, 2628, 2566, 2641, 2637, 2655, 2634, 2636, 2632, 2633, 2638, 2642, 2573, 2635.
Pressure RatingClass 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS
TypesThreaded, Plate, Screwed, Forged.
Supporting materialGasket, Ring Joint, Flange Bolts
Size range1/2" (15 NB) to 48" (1200NB) DN10~DN5000
Production techniqueForged, machined and Heat treated
Available Flange TypeWeld Neck Flanges, RTJ Flanges, Slip On Flanges, Spectacle Blind Flanges, Flanges Gaskets, Square Flanges, Standard Insert Flanges, High Hub Blinds Flanges, Flat Flanges, forged flanges, Weldo / Nipo Flanges, Jacket Insert Flanges, Tongue groove Flanges, Blind Flanges, Socket Weld Flanges, Large diameter Flanges, Long Weld Neck Flanges, Spacer Blinds, SWRF Flanges, SORF Flanges, Angle Face Rings Flanges, Spades Ring Spacers Flanges, WNRF Flanges, Screwed Flanges, Insert Flanges, flanges bolts, cf flange, Lap Joint Flanges, ASME B16.36 Orifice Flanges, Plate Flange, Expander Flanges, Ring Type Joint Flanges, Loose Flanges, Reducing Flanges, puddle flange, Threaded Flanges, blank flange, vacuum flange.
Connect Type/ Flange Face TypeRing Type Joint (RTJ), Flat Face (FF), Tongue & Groove, Small Male-Female (SMF), Lap-Joint Face (LJF), Raised Face (RF), Large Male-Female (LMF), Small Tongue.
Custom designAs per your drawing
TestDirect-reading Spectrograph, X-ray detector, UItrasonic flaw detector, Magnetic particle detector, Hydrostatic testing machine.
OriginIndian / USA / Korean / West Europe / Japan
Pressure ClassPN 6 TO PN 100
ThicknessNormal Pipe Size ≤ 18
Bore DiameterNormal Pipe ≤ 10
High TemperatureAbove 200°C (400°F) For Class 150 Or Above 400°C (750°F)
Low TemperatureAbove -29 Degree C (−20°F)
Coating/Surface Treatment:Zinc Plated, Anti-rust Paint, Oil Black Paint, Yellow Transparent, Cold and Hot Dip Galvanized.
European/African/Russian Standard FlangesAvailable
Gaskets TypesFull Face, Metallic Ring, Flat Ring Gasket
Marking Standard
Name of Manufacturer
Schedule
Type of Flange Facing
Pressure Class
Nominal Pipe Size, etc
Test Certificates
EN 10204/3.1B, NACE MR0103, NACE MR0175
Raw Materials Certificate
100% Radiography Test Report
Third Party Inspection Report, etc

Flange Type Available

flanges

Lap Joint

Weld Neck

Weld Neck

Male Female

Male Female

Nippo

Nippo

flanges

Orifice

flanges

Plate

flanges

Puddle

Raised Face

Raised Face

Reducing

Reducing

Ring Spacer

Ring Spacer

Ring Type Joint

Ring Type Joint

Slip on

Slip on

SocketWeld

SocketWeld

Spade

Spade

Spectacle Blind

Spectacle Blind

Square

Square

Threaded Screwed

Threaded Screwed

Tongue Groove

Tongue Groove

EWeld Neck

Weld Neck

Environment

Weldo


ISO Flange Dimensions

Size Of FlangesTD1CBHoleFG
NW16CF7,634274,4 / M4621,518,3
NW35CF12,77058,76,7 / M6648,3541,9
NW50CF15.885,672,48,4 / M8861,855,6
NW63CF17,5113,592,18,4 / M8882,5577,2
NW100CF19,9151,6130,38,4 / M816120,7115,3
NW150CF22,3202,41818,4 / M820171,5166,1
NW200CF24,6253,2231,88,4 / M824222,35216,9
NW250CF263062848,4 / M832273,2267
NW300CF28,4355,6325,410,5 / M1030313,5307,3
NW350CF28,5419,1388,910,5 / M1036376,9370,7

ISO Flanges Centering Ring Dimensions

Size Of FlangesLip Outside Daimeter
in Millimeter		Lip Inside Daimeter
in Millimeter		Thickness
in Millimeter
ISO 632.756 (70)2.63 (66.8)0.154 (3.9)
ISO 803.268 (83)3.14 (79.8)0.154 (3.9)
ISO 1004.016 (102)3.89 (98.8)0.154 (3.9)
ISO 1606.024(153)5.90 (149.9)0.154 (3.9)
ISO 2008.386 (213)8.26 (209.8)0.154 (3.9)
ISO 25010.276 (261)10.14 (257.6)0.154 (3.9)
ISO 32012.520 (318)12.30 (312.4)0.220 (5.6)
ISO 40015.748 (400)15.53 (394.5)0.220 (5.6)
ISO 50019.724 (501)19.51 (495.6)0.220 (5.6)
ISO 63025.630 (651)25.41 (645.4)0.220 (5.6)

ISO K Style Flange Dimensions

Size Of FlangesTube Outside Daimeter
(in.)		Flanges Inside Daimeter
in.(millimeter)		Thickness Of Flanges
in.(millimeter)		Number of ClampsAssembly Diameter
in.(millimeter)
MinimalOptimal
ISO 632.53.74 (95)0.47 (11.94)345.00 (127)
ISO 8034.33 (110)0.47 (11.94)485.59 (142)
ISO 10045.12 (130)0.47 (11.94)486.38 (162)
ISO 16067.09 (180)0.47 (11.94)488.35 (212)
ISO 20089.45 (240)0.47 (11.94)61210.71 (272)
ISO 2501011.42 (290)0.47 (11.94)61212.68 (322)
ISO 32012.7514.57 (370)0.67 (17.02)81216.73 (425)
ISO 4001617.72 (450)0.67 (17.02)81620.08 (510)
ISO 5002021.65 (550)0.67 (17.02)121624.02 (610)
ISO 6302427.17 (690)0.87 (22.10)141829.53 (750)

ISO F Style Flange Dimensions

Flanges SizeTube Outside Daimeter
(in.)		Flanges Outside Daimeter
in.(millimeter)		Thickness Of Flanges
in.(millimeter)		Number of BoltsDiameter Of Holes
in.(millimeter)		BCD
in.(millimeter)
KF 632.55.12 (130)0.47 (11.94)40.35 (9)4.33 (110)
KF 8035.71 (145)0.47 (11.94)80.35 (9)4.92 (125)
KF 10046.50 (165)0.47 (11.94)80.35 (9)5.71 (145)
KF 16068.86 (225)0.63 (16.00)80.43 (11)7.87 (200)
KF 200811.22 (285)0.63 (16.00)120.43 (11)10.24 (260)
KF 2501013.19 (335)0.63 (16.00)120.43 (11)12.20 (310)
KF 32012.7516.73 (425)0.79 (20.07)120.55 (14)15.55 (395)
KF 4001620.08 (510)0.79 (20.07)160.55 (14)18.90 (480)
KF 5002024.02 (610)0.79 (20.07)160.55 (14)22.83 (580)
KF 6302429.53 (750)0.94 (23.88)200.55 (14)28.35 (720)

ISO Blank Flange Dimensions

Number Of ItemStandard MaterialABCDE
IBL-63SUS304959012704.5
IBL-80SUS30411010512834.5
IBL-100SUS304130125121024.5
IBL-160SUS304180175121534.5
IBL-200SUS304240235122134.5
IBL-250SUS304290285122614.5
IBL-320SUS304370365173184.5
IBL-400SUS304450445174004.5
IBL-500SUS304550545175014.5

ISO Bored Flange Dimensions

Number Of ItemStandard MaterialABCDEF
IBF-63SUS30495901263.7704.5
IBF-80SUS3041101051276.4834.5
IBF-100SUS30413012512101.81024.5
IBF-160SUS30418017512
152.9
1534.5
IBF-200SUS30424023512203.72134.5
IBF-250SUS30429028512254.52614.5
IBF-320SUS30437036517305.33184.5
IBF-400SUS30445044517406.94004.5
IBF-500SUS30455054517508.85014.5

ISO Rotatable Bolt Ring Dimensions

Item No.Standard MaterialABCDP.C.D. 
IRBR-63SUS30413098.5129x4110
IRBR-80SUS304145113.5129x8125
IRBR-100SUS304165133.5129x8145
IRBR-160SUS304225185.71611x8200
IRBR-200SUS304285245.71611x12260
IRBR-250SUS304335295.71611x12310
IRBR-320SUS304425375.82014x12395
IRBR-400SUS304510458.82014x16480
IRBR-500SUS304610558.82014x16580

ISO Kf Flange Dimensions

Nominal diameterA [millimeter]B [millimeter]C [millimeter]D [millimeter]E [millimeter]Pipe dimensionPart number
DN 10 ISO-KF301423012.214 x 2 mm120FRA010-14-30
DN 10 ISO-KF521423012.214 x 2 mm120FRA010-14-52
DN 10 ISO-KF701423012.214 x 2 mm120FRA010-14-70
DN 16 ISO-KF4019.051.653017.219.05 x 1.65 millimeter120FRA016-19-40
DN 16 ISO-KF302023017.220 x 2 millimeter120FRA016-20-30
DN 16 ISO-KF522023017.220 x 2 millimeter120FRA016-20-52
DN 16 ISO-KF702023017.220 x 2 millimeter120FRA016-20-70
DN 25 ISO-KF4025.41.654026.225.4 x 1.65 millimeter120FRA025-25-40
DN 25 ISO-KF302824026.228 x 2 millimeter120FRA025-28-30
DN 25 ISO-KF552824026.228 x 2 mm120FRA025-28-55
DN 25 ISO-KF702824026.228 x 2 mm120FRA025-28-70
DN 40 ISO-KF40381.55541.238 x 1.5 mm120FRA040-38-40
DN 40 ISO-KF2642.425541.242.4 x 2 mm120FRA040-42-26
DN 40 ISO-KF3044.525541.244.5 x 2 mm120FRA040-44-30
DN 40 ISO-KF5844.525541.244.5 x 2 mm120FRA040-44-58
DN 40 ISO-KF7044.525541.244.5 x 2 mm120FRA040-44-70
DN 50 ISO-KF4050.81.657552.450.8 x 1.65 mm120FRA050-50-40
DN 50 ISO-KF265427552.454 x 2 mm120FRA050-54-26
DN 50 ISO-KF30573.27552.457 x 3.2 mm120FRA050-57-30
DN 50 ISO-KF58573.27552.457 x 3.2 mm120FRA050-57-58
DN 50 ISO-KF70573.27552.457 x 3.2 mm120FRA050-57-70

ISO 160 Blank Flange Weight Formula

Flanges StandardFlanges ClassFlanges DiameterFlanges Bolt Circle DiameterFlanges Number of BoltsFlanges Bolt SizeDiameter of Bolt Hole
AS4087 FlangesPN14 Flanges95674M1214
AS 2129 FlangeTable C Flanges956741314
Table D Flanges956741314
Table E Flanges956741314
Table F Flanges956741314
Table H Flanges1148341617
Table J Flanges1148341617
ANSI B16.5 FlangesANSI 150 Flanges896041316
ANSI 300 Flanges956741316
ANSI 600 Flanges956741316
ANSI 900 Flanges1218341922
ANSI 1500 Flanges1218341922
ISO 7005 (DIN) FlangePN6 Flanges80554M1011
PN10 Flanges95654M1214
PN16 Flanges95654M1214
PN20 Flanges9060.54M1416
PN25 Flanges95654M1214
PN40 Flanges95654M1214

ISO 160 Blank Flange Weight Formula

Flanges StandardFlanges ClassFlanges DiameterFlanges Bolt Circle DiameterFlanges Number of BoltsFlanges Bolt SizeDiameter of Bolt Hole
AS4087 FlangesPN14 Flanges95674M1214
AS 2129 FlangeTable C Flanges956741314
Table D Flanges956741314
Table E Flanges956741314
Table F Flanges956741314
Table H Flanges1148341617
Table J Flanges1148341617
ANSI B16.5 FlangesANSI 150 Flanges896041316
ANSI 300 Flanges956741316
ANSI 600 Flanges956741316
ANSI 900 Flanges1218341922
ANSI 1500 Flanges1218341922
ISO 7005 (DIN) FlangePN6 Flanges80554M1011
PN10 Flanges95654M1214
PN16 Flanges95654M1214
PN20 Flanges9060.54M1416
PN25 Flanges95654M1214
PN40 Flanges95654M1214

ISO 7005 PN Flange Pressure Rating

Flange Class15030040060090015002500
Flange Pressure Nominal ISO 7005 (PN)205068110150260420

ISO 5211 Flange Thickness

ISO Flange Wall Thickness
NPS (Normal Pipe Sizes)Outside Daimeter (O.D.)Schedule 10Schedule 20Schedule 30STD WallSchedule 40Schedule 60EXT HvySchedule 80Schedule 100Schedule 120Schedule 140Schedule 160XX Hvy
½0.840.083......0.1090.109...0.1470.147.........0.1880.294
¾1.050.083......0.1130.113...0.1540.154.........0.2190.308
11.3150.109......0.1330.133...0.1790.179.........0.250.358
1 ¼1.660.109......0.140.14...0.1910.191.........0.250.382
1 ½1.90.109......0.1450.145...0.20.2.........0.2810.4
22.3750.109......0.1540.154...0.2180.218.........0.3440.436
2 ½2.8750.12......0.2030.203...0.2760.276.........0.3750.552
33.50.12......0.2160.216...0.30.3.........0.4380.6
3 ½40.12......0.2260.226...0.3180.318............0.636
44.50.12......0.2370.237...0.3370.337...0.438...0.5310.674
55.5630.134......0.2580.258...0.3750.375...0.5...0.6250.75
66.6250.134......0.280.28...0.4320.432...0.562...0.7190.864
88.6250.1480.250.2770.3220.3220.4060.50.50.5940.7190.8120.9060.875
1010.750.1650.250.3070.3650.3650.50.50.5940.7190.84411.1251
1212.750.180.250.330.3750.4060.5620.50.6880.84411.1251.3121
14140.250.3120.3750.3750.4380.5940.50.750.9381.0941.251.406...
16160.250.3120.3750.3750.50.6560.50.8441.0311.2191.4381.594...
18180.250.3120.4380.3750.5620.750.50.9381.1561.3751.5621.781...
20200.250.3750.50.3750.5940.8120.51.0311.2811.51.751.969...
22220.25......0.375......0.5......................
24240.250.3750.5620.3750.6880.9690.51.2191.5311.8122.0622.344....
2626............0.375........0.5........................
30300.3120.50.6250.375........0.5........................
36360.3120.50.6250.3750.75....0.5........................
4040............0.375........0.5........................
4242……..……..……..0.375……..……..0.5……..……..……..……..……..……..
4848……..……..……..0.375……..……..0.5……..……..……..……..……..……..

Application

  • Food & Beverage
  • Paper Industry
  • Pharmaceutical
  • Hospital Equipment
  • Textiles
  • Dairy
  • Aircraft
  • Chemicals
  • Others Parts in Machinery
Employee

Testing

  • Hydrostatic Test
  • Macro Test
  • Ultra Sonic Test (UT)
  • Micro Test
  • Hardness Test
  • Radiography Test
  • Pitting Resistance Test
  • PMI Testing
  • Mechanical Testing
  • X-ray detector
MARKET

Packing

  • Wooden Boxes
  • Shrink-Wrappedt
  • Carton Boxes
  • Wooden Crates
  • Wooden Pallets
Employee

ASME / API Flanges

Materials

Quick Fact

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